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 0x18a346fb599f7242b44d2473dfe3a2c50a3275d9fa2aff95c4bd34e2ad787d25. 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/370b9eb8-f051-4ea1-95df-4a01066aecac.json and https://artists.proofprofile.net/proofs/artist/370b9eb8-f051-4ea1-95df-4a01066aecac.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6ad6176c15db192484bbd5260a153d4ab8afb13ba96e0ebdcaaafab23de762f. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPVI00518950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61eabcf1b81e71deceeeede0c1a101c107198cec132dbfab6ce88ae6b80f3e16. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPVI00518960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5fdeb2d013e4bb743481df28bc8f97ac2d58a6b8c469c08e7827acbe988958a. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPVI00519020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaff4875196c3ef4fe64a1b538f5156a05feb5e930d06887333e6292f1bf9c9e3. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPVI00518980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b9a382e678104cd73be891c820cb4ee52f44d741f271f1c398fe8c2981a880b. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPVI00519010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9446508d1f3b7fa614e52d57189388f03d6527bf2ede9c2c0bbcc3812a62196e. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPVI00455940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x340aac90b177da4bb6adcc802d00da42f1c23f97ee44334f6cdd6e5b06079de5. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPVI00519030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fa18bdbc7063d23b0adbf34ba54e60964892503ef608986282bdda117529586. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPVI00415820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23a27b4eaa16a21ac20445a8033ae6578bc1f6bb2696d8dfd7b883a0af020a4b. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPVI00415830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79d64bf0c67a2ee3f03f9d6446f7a6c2a97d9a8e9c6816c197d99f3bf7034634. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPVI00402940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6ab1f9a4ee8354911af303101a3b70db16bdd50612e81873e685fe7bc13d2e6. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPVI00415870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb550816bf4764ea51ddd234dc45094b678c56d94c9f9b77459e27ca0b37cfcd6. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPVI00415880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3039d12214b0e9d0de33e095c36894dd74f33a7e9b2036cb7952c3856569dac. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPVI00323970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b97790de01da03dd94180ea33d7828bf2b94047989841f84eb8fbeaf29bdf6f. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPVI00415900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51b12c2563d948c84bfe686ebd1ea0cf5b18ad4cf9ac650b826e4421a2e6145a. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPVI00415920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56b0f95d36cb558efc923daf296e459f64f999bc232fd2bd8a4e62c74419b010. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPVI00415930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7601ce84584712772288a8b4b7d03b96bbb4390c2bd9735aa3237dabd165d31. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPVI00415940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd4a6e4e64fa5df9e43af157c4900df52f79bf61ec450584b406fb3104564f57. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPVI00245250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x942ff12590cd5c8baff843203524d713a883b9d538aa5ed584dfc4fbaa14a59b. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPVI00314290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1004cabada965c21a8a9f0f3fb9b2c375944fae3443bf933f0a87817373cde98. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPVI00318680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc08ca5d8c828d863e6d211743001c360a2dc11c59334daef6de2370bfd05219f. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPVI00318690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89326441ad753558ec851cacf96854656afecef9584b664ef4bf90cd60357a3c. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPVI00318700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f12ed457161d52baf6640aeeb79b840aa507815e7182f15b66161b04b862764. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPVI00318740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1e6e70983ac8e1b0569cb4e5e02e6e173ef0f43839951d868257900b9b0dceb. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPVI00318750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0219c6a31ddcd41920d3d358c1ccd60ec36c5ae9c25a68a541bfc6abb7290c6d. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPVI00318760.
今日も星が綺麗~ホシトボクトネコノウタ~
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe082209f332919e14b66304c49f2997dff952580c199a58866bbc123c45965ca. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPVI00318770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d65b9c8d53887bd6c1ba232548e024ff5356662141271f36d9061a82a68a940. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:32:43Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPVI00234160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d3ddd13667ccf4502dd6f013224a0651c4eeb1011353b43a2ed679287f32323. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPVI00234190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2052badaa547a4b52a086446f5d6c613635144b55ce6034643ad835b05fcc46b. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPVI00234200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4eb59bf3e0d53929bacd1162964fa380ee554a672057326e0eb5724ab06a193. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPVI00234210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5a3f9c2b0f92f94ad88a0ecdbe83e66585019fa005616c1fbbd2be7f137ce49. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPVI01002490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab20c0dfd34977ed7a69bac88320cc524e0d83407f55221499d51db93f2277cc. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPVI00245270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x512fa34bd91fccca47a5e2f234fc688dee5e4c7ad8eaddeecd655d2c3694fc3c. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPVI01003010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd4a6e4e64fa5df9e43af157c4900df52f79bf61ec450584b406fb3104564f57. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPVI00245250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9446508d1f3b7fa614e52d57189388f03d6527bf2ede9c2c0bbcc3812a62196e. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPVI00455940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cd8664601f40533c11dcd382d37d0b60a65d46356fb489f5e1299e43d0ca807. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPVI00044560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x942ff12590cd5c8baff843203524d713a883b9d538aa5ed584dfc4fbaa14a59b. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPVI00314290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42b7d0957a5ce6e8529fdba28752c37cba2171d2ac832ad37d04d97ac65f8c5b. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPVI00922250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd391e9aae4aa88fbebb217580e6d0397699e8d6daf7c7eb5b122ca0c8e73fe52. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPVI09928040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc8343866cfccc515412ba9ee7486af3489b2eb28da5362cf3331eaecd1e2373. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPVI09835660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b0b09d7b4022cac24d3b93785c1f0d0b9edfc3eed5021dc40196280c57fc9d9. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPVI01003040.