1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72c6bb7fac294792eae899a7dd063f85741ee0d291fc58aecfafbe349d186f4a. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c429056d-9dee-48bb-81a3-e7773edbf778.json and https://artists.proofprofile.net/proofs/artist/c429056d-9dee-48bb-81a3-e7773edbf778.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0xb8bd7e78ac33cf69d5effe618db8e257d427fc2e000ef96ffb82db9fd24f30fd","isrc":"JPSR00400027","name":"白い花 <acoustic ver.>","registered_at":"2026-06-27T22:03:14Z","spotify_id":"4uRRKeWBlJAS78XYSh9zzP","type":"track"}
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 3. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 4. GET OTSVerificationAPI → pre-computed 6-check result from server 5. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8bd7e78ac33cf69d5effe618db8e257d427fc2e000ef96ffb82db9fd24f30fd. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/4uRRKeWBlJAS78XYSh9zzP.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/4uRRKeWBlJAS78XYSh9zzP.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3070671cac3026776fe967ac345885953ddcd079333964fd67fd5fc81d999cfc. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5b3fpTJwPc3H6HiVDC3DfD.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/5b3fpTJwPc3H6HiVDC3DfD.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x588bf2f2ec598227e3810d62cced88803fff3df59f844def9c2bfc92d77140f3. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/433pe0kSH5Tc1Ux12lziRI.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/433pe0kSH5Tc1Ux12lziRI.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03fc2e355e44c65133c5fe3d6069279d80099fd79cb333a525b8f507d55cbea6. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/6yRgYs4QSKZH0E9VGw5c0a.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/6yRgYs4QSKZH0E9VGw5c0a.
{"copyright_id":"0x81d9b561d571cdfe556007147ab8b771f1d4ee67d39ba9d21eba66fd9ac38163","isrc":"JPSR00400028","name":"secret base 〜君がくれたもの〜 <LIVE ver.>","registered_at":"2026-06-18T08:10:47Z","spotify_id":"4EPZBYcqqqD0ScA4EdcVUY","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81d9b561d571cdfe556007147ab8b771f1d4ee67d39ba9d21eba66fd9ac38163. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/4EPZBYcqqqD0ScA4EdcVUY.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/4EPZBYcqqqD0ScA4EdcVUY.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63225d34b37cc41ce48422d698f33541cb00a854d8a6714bcdb7f3e733d53b4b. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/3iGW6zuw0S21IzVEnNMJEa.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/3iGW6zuw0S21IzVEnNMJEa.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32c29df4395ec51673ca74663bcec3753895241b7757f525da8d3587a43b23e5. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5x27MGmxiioxDFmMIXlxJr.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/5x27MGmxiioxDFmMIXlxJr.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a53d5ec1e0b902a04bc8bb96e0d4241ab0cac6189528763db6128e7b94d5fd7. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/0HVDC4c5vBLXwVsBINDK4D.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/0HVDC4c5vBLXwVsBINDK4D.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bcde29deb5b7b7e637d08c3503add080b53cc56e867b300dac18dac8ce25f9c. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5dvYHtyTpA4ocXDih7mxju.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/5dvYHtyTpA4ocXDih7mxju.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x897130948bf20918482862ba64d367e5efe4fb2ea8b02f72455e169bab178256. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5o5SIT0Z7lqxXqSkXE2atH.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/5o5SIT0Z7lqxXqSkXE2atH.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x350e271afa967f7821cac09cdf9ff4ea1848deace1f137e3442937e73a09c338. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/6rQPCkvS6Jj8VyyQSRM0Vs.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/6rQPCkvS6Jj8VyyQSRM0Vs.
{"copyright_id":"0xda779c286fc693173afdc86a3288d15fb8b0316ebbd5cd34e2a946f21b23d8d3","isrc":"JPSR00106705","name":"secret base 〜君がくれたもの〜 Piano Ver.","registered_at":"2026-06-20T15:17:36Z","spotify_id":"7D1YuZQkcnTdeIBGmAEOJe","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda779c286fc693173afdc86a3288d15fb8b0316ebbd5cd34e2a946f21b23d8d3. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/7D1YuZQkcnTdeIBGmAEOJe.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/7D1YuZQkcnTdeIBGmAEOJe.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74fd11ed52a38002d3fce7cdd81744208b922539249f89621c7473bb82c0cbf5. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/702t9MQu3wOz65wkzhMhZl.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/702t9MQu3wOz65wkzhMhZl.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15eb93b092212283b05d624c9fcc41c7924baab86073a00e618b3e7a8a6a1d2a. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5GTT8gnUjN3HxAlOJjzBee.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/5GTT8gnUjN3HxAlOJjzBee.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf675b1267c6b7b25ecc7e4e7a937cb33fcd63600b9123ad550df89a3aba71d1e. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/6TFHB6a2XhSYPFxCw8WEXa.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/6TFHB6a2XhSYPFxCw8WEXa.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63225d34b37cc41ce48422d698f33541cb00a854d8a6714bcdb7f3e733d53b4b. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/32LYHX9gt9wJQhh8XuoqVz.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/32LYHX9gt9wJQhh8XuoqVz.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a680a562270637f7dbead151c7dfcfe86a24bf848c2dc7a795dd10a4c7e0b8e. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/6rTwHp6RqgBfZ7GnWWSUHL.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/6rTwHp6RqgBfZ7GnWWSUHL.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd822f85c8b06ca0ef9b151812684822f269091b7d6e656f6cff3492e9b83931a. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5U86UPbZ84fp4DuqqQEpli.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/5U86UPbZ84fp4DuqqQEpli.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32c29df4395ec51673ca74663bcec3753895241b7757f525da8d3587a43b23e5. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/05Rg48nIJrLpxdPjmiylKl.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/05Rg48nIJrLpxdPjmiylKl.
{"copyright_id":"0x3e3244089b173e8a66ee5bf9df94222d30ad53447ce9158806070bd23ffff27b","isrc":"JPSR00103464","name":"secret base ～君がくれたもの～","registered_at":"2026-06-04T08:52:07Z","spotify_id":"27bo9kMNyqRhRAHcspOEKs","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e3244089b173e8a66ee5bf9df94222d30ad53447ce9158806070bd23ffff27b. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/27bo9kMNyqRhRAHcspOEKs.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/27bo9kMNyqRhRAHcspOEKs.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a53d5ec1e0b902a04bc8bb96e0d4241ab0cac6189528763db6128e7b94d5fd7. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1bgyehnbuvYWKpmiydIKDR.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/1bgyehnbuvYWKpmiydIKDR.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1afed1af388b841ffa7111c55c0d6928ce34bd4b9adaa4753c12fd832ebc56d3. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/2ua9TRSFVGeLMEfZE0HlDf.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/2ua9TRSFVGeLMEfZE0HlDf.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf675b1267c6b7b25ecc7e4e7a937cb33fcd63600b9123ad550df89a3aba71d1e. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/23FnAmnksmxTD3xsmA1DrR.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/23FnAmnksmxTD3xsmA1DrR.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74fd11ed52a38002d3fce7cdd81744208b922539249f89621c7473bb82c0cbf5. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1RBs7HBZhXnH1QWDisksNn.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/1RBs7HBZhXnH1QWDisksNn.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa66c5ea85ebbd6ca2daab821e855a8d62ac91e8509cafdfced0bffd0b529948a. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/6VIiYjfvEFlmObXrNJx597.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/6VIiYjfvEFlmObXrNJx597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3070671cac3026776fe967ac345885953ddcd079333964fd67fd5fc81d999cfc. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5q8miUNcyfBO6ZOk6aKNOT.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/5q8miUNcyfBO6ZOk6aKNOT.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x588bf2f2ec598227e3810d62cced88803fff3df59f844def9c2bfc92d77140f3. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/137DrrR4FOyj3OmMlwLDEP.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/137DrrR4FOyj3OmMlwLDEP.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03fc2e355e44c65133c5fe3d6069279d80099fd79cb333a525b8f507d55cbea6. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/4TZQQUvJvsAdha3pA4NeNB.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/4TZQQUvJvsAdha3pA4NeNB.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ec88bb1aac06de93a11ff931677e7d47f5642815bb5c54562e064989a79c4e0. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/0rEakYUtwA3dodJohiYmnU.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/0rEakYUtwA3dodJohiYmnU.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ca1dc2c2c6e1e60f22935d05393078b86501843ef133b9c45051436fee8148b. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/3BwjqDSrsJgot2K8PQouhF.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/3BwjqDSrsJgot2K8PQouhF.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93d50bff2a348c9b4dc4bbb2389ad3758c81a91e99ed773b75d0e859221467a8. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1LBGJXag25gLGGzZhsQyx6.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/1LBGJXag25gLGGzZhsQyx6.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6485a8ffbb01855e2139edd1e8c8627b6ad9c184219703278a2e69ff7194a13. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/4ANx43qBV2Z9X4mNpKcaK7.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/4ANx43qBV2Z9X4mNpKcaK7.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28da284e65d7964ad1254929f78f56d902e1efb2f086b831f7ee9c37ef510fdc. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/26k6DzNcjwyS2SmSFhmqX7.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/26k6DzNcjwyS2SmSFhmqX7.
secret base ～君がくれたもの～ / 夢ノカケラ・・・ BESTタッグ
{"copyright_id":"0x3e3244089b173e8a66ee5bf9df94222d30ad53447ce9158806070bd23ffff27b","isrc":"JPSR00103464","name":"secret base ～君がくれたもの～","registered_at":"2026-06-04T08:52:07Z","spotify_id":"1zeCrqEA2aTd4KXvTEZGrK","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e3244089b173e8a66ee5bf9df94222d30ad53447ce9158806070bd23ffff27b. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1zeCrqEA2aTd4KXvTEZGrK.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/1zeCrqEA2aTd4KXvTEZGrK.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1afed1af388b841ffa7111c55c0d6928ce34bd4b9adaa4753c12fd832ebc56d3. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/4S0FmCzOyuVr0EYZk86Mp7.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/4S0FmCzOyuVr0EYZk86Mp7.
{"copyright_id":"0x5f950f71bf16b5e0fb1cb03560f95a713b2b1a899a71ed35898cb6cb7a56e2ac","isrc":"JPSR01201461","name":"treasure of the heart 〜キミとボクの奇跡〜","registered_at":"2026-06-19T19:52:37Z","spotify_id":"1LtSHaWvV5y1TrpRTxtzq9","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f950f71bf16b5e0fb1cb03560f95a713b2b1a899a71ed35898cb6cb7a56e2ac. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1LtSHaWvV5y1TrpRTxtzq9.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/1LtSHaWvV5y1TrpRTxtzq9.
treasure of the heart 〜キミとボクの奇跡〜 -Instrumental-
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf667ea154c0260eef317e51290822ecc5fe7529ca992933e5d729be97a1dc865. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1yPajpleNn62SNWls1Zr3N.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/1yPajpleNn62SNWls1Zr3N.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28da284e65d7964ad1254929f78f56d902e1efb2f086b831f7ee9c37ef510fdc. Chain 2 (Bitcoin): anchored in block 957065 (2026-07-07T16:43:21Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/2pPUhDh3B9XtJxTX4IbeT4.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/2pPUhDh3B9XtJxTX4IbeT4.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6485a8ffbb01855e2139edd1e8c8627b6ad9c184219703278a2e69ff7194a13. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/41XbH3XSyl0D7xO4nCtF1H.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/41XbH3XSyl0D7xO4nCtF1H.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93d50bff2a348c9b4dc4bbb2389ad3758c81a91e99ed773b75d0e859221467a8. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/6sX1yjJAzh1R2vttPKvlOn.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/6sX1yjJAzh1R2vttPKvlOn.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ca1dc2c2c6e1e60f22935d05393078b86501843ef133b9c45051436fee8148b. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/77HF4sWiHTfukEzdbcNrfp.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/77HF4sWiHTfukEzdbcNrfp.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74fd11ed52a38002d3fce7cdd81744208b922539249f89621c7473bb82c0cbf5. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/6oPmumsU7FADBPTbI21Pgm.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/6oPmumsU7FADBPTbI21Pgm.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa66c5ea85ebbd6ca2daab821e855a8d62ac91e8509cafdfced0bffd0b529948a. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5d3TCmJJdMe1kGbWOQMCW6.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/5d3TCmJJdMe1kGbWOQMCW6.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf675b1267c6b7b25ecc7e4e7a937cb33fcd63600b9123ad550df89a3aba71d1e. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/4geaa71XSbekdBwwzvFL0g.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/4geaa71XSbekdBwwzvFL0g.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ec88bb1aac06de93a11ff931677e7d47f5642815bb5c54562e064989a79c4e0. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/4ICrVigW4GKo6e2IJL2AHR.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/4ICrVigW4GKo6e2IJL2AHR.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3070671cac3026776fe967ac345885953ddcd079333964fd67fd5fc81d999cfc. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/2RZwhaGjXN93WzYX9nDDK5.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/2RZwhaGjXN93WzYX9nDDK5.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x588bf2f2ec598227e3810d62cced88803fff3df59f844def9c2bfc92d77140f3. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/3NlzeNEwiWyV03F2Q5Pb5r.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/3NlzeNEwiWyV03F2Q5Pb5r.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e3244089b173e8a66ee5bf9df94222d30ad53447ce9158806070bd23ffff27b. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/7ah8In0z478pctQnoFvW1L.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/7ah8In0z478pctQnoFvW1L.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2ff25b97704a178d18e9f6b0da988dace1c401c2dcb6d98540f72c51e1919ee. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/64TcyOM94Qimf5HfpS3oX3.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/64TcyOM94Qimf5HfpS3oX3.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x998f96548d7d320e3874787ae8805a13a4806a05139a7f189bd66719d8e465ce. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/0ezCnId5kLZ5Rese9zhZ8J.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/0ezCnId5kLZ5Rese9zhZ8J.
{"copyright_id":"0x6fce0f5e11cad7a6aa7574a80896c9068d615ff5405270303735bcbe8bcde7c2","isrc":"JPFL09102590","name":"Choo Choo TRAIN","registered_at":"2026-06-04T13:45:05Z","spotify_id":"1XS2YCEvJA4xCczBwaUl9F","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fce0f5e11cad7a6aa7574a80896c9068d615ff5405270303735bcbe8bcde7c2. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1XS2YCEvJA4xCczBwaUl9F.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/1XS2YCEvJA4xCczBwaUl9F.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb253d8f1f6e1357617f6cc04d94bd421e2c4e24c2e35e671559e4f633c906302. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/13ZrdwZjgT6P1In07B4TBF.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/13ZrdwZjgT6P1In07B4TBF.
{"copyright_id":"0xdea83ef724b5a1f6642551f036e332e6f6cd03eaf3215db25f0dff7b62367bd0","isrc":"JPB609620603","name":"DEPARTURES - Album Mix","registered_at":"2026-06-04T06:01:39Z","spotify_id":"43rd6p4jWjKJccxFPONm9c","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdea83ef724b5a1f6642551f036e332e6f6cd03eaf3215db25f0dff7b62367bd0. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/43rd6p4jWjKJccxFPONm9c.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/43rd6p4jWjKJccxFPONm9c.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb5127369feb44bb5960159470e6fa60bebc962c9b15195a601e8f4d9a8d3ad5. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/649bQvPsCrBYxk8s8lXHbn.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/649bQvPsCrBYxk8s8lXHbn.