1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 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 0x72d7615fc41142cdac6365d92fdc226e83833e7f873dd07563d99e7b474c7291. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f0ac8f61-ab5d-463f-a331-7aa619f5e581.json and https://artists.proofprofile.net/proofs/artist/f0ac8f61-ab5d-463f-a331-7aa619f5e581.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 → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 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 0x0d8cdbd3f95f227c6ba8f6f78b315a441022a8d8c3a05fb31b3abda3feb26223. Chain 2 (Bitcoin): anchored in block 959089 (2026-07-22T05:06:12Z), 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/JPJ961200024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x031162edfb5f2423611ce5d822b9b481313304b4b9b53f3d786c3d09a229e95c. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T15:21:20Z), 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/JPVI01602170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6322ed532eed167ce6ff994fbc5fe91a274ee3a244c12ad330cac4f4f5cd2dab. Chain 2 (Bitcoin): anchored in block 957620 (2026-07-11T22:32:56Z), 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/JPVI01602190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bc743b98fb42bdb8799642a92318619ffd96c0534374db435125786156e0655. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/JPVI01719750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9551f8049eac1ef6da6d00f7e46a609ea3178adb31b7a83dadf1861c09a0f1d. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/JPVI01719790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5619c160329d5cf04b11e64af54514f65c1f8bc2df1d6d97cfa6a7c1e6b2523c. Chain 2 (Bitcoin): anchored in block 958689 (2026-07-19T07:11:11Z), 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/JPVI01719800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad03b85a5e465cc002f243230afe2d928be1524959f9d1b56b5e7a33e9e8e5e2. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/JPVI01719820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc100c38c3d7b5f2775db1ca8247e041f3f15e0a216a7ebe714dbff3c0551b404. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-21T23:41:40Z), 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/JPVI01822930.
RYOTA FUJIMAKI Acoustic Recordings 2000-2010
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03be0befffc202f637f78d6447eeb13ede3e9510b7be510a2afc83f9722c9414. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/JPVI01900965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc235a4524375d6922504e591a8721ccdc732e7316f87326eb0e2d230adaf45d. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/JPVI01900966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd756c1e3faf0710e3b1e71aa35967cbb89cb0ceecd98041f7116f95b3be14b29. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T07:22:48Z), 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/JPVI01900967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4ae5129d437765b28c6018afc5adeb14c189279b4f0d591008034406bbd434b. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T21:23:25Z), 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/JPVI01900969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x614f04bf441cffea76e36fd496ae4e28f6ec625ea6f7f44b1cda50559065945c. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/JPVI01900970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf91992254bd68ab2347fe745b144ecc1f89b0098f14988a6b34ae544da2d58e3. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T00:38:17Z), 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/JPVI01901931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2ee8926710ff9a215c230b3fdc19a48216113e93ee845e6e3ccd2e302a4051e. Chain 2 (Bitcoin): anchored in block 959145 (2026-07-22T17:20:00Z), 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/JPVI01902590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6768cacf95256d8acce37a8eb2f67db106f85318f10aa006c3dda7b28476b3f2. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/JPVI01902859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x800102c2cf1ddc58e02397727541078a958f2b7a0989c3e13930be38d15b18e0. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/JPVI02101724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd642b33d4214630b24477be1d6f7584cdcbc5d2608b7d42d909593c22ac89e16. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/JPVI02203951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x800102c2cf1ddc58e02397727541078a958f2b7a0989c3e13930be38d15b18e0. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/JPVI02101724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38409ac83c1689c6c197c7f64899d3dc776c11e65082dbad7b0d9ea4dc2f9993. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/JPVI02203964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffa34ac029638596ad2649619bf09956f33e17516ffa07d35fe01f12f86eb1db. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/JPVI02300346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcd8b513b5f78a55bcdb66ee4584b8e5069d94a025910d886fe6a2b24dc63556. Chain 2 (Bitcoin): anchored in block 959071 (2026-07-22T01:05:15Z), 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/JPVI02404073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x512627e54666dad4a720312e01fd4e332742478f39cae68d4103b7377a7237f3. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:23:47Z), 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/JPVI02500293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48c600853d3d85413d5ab3c074b2f719fe9038eab463632e5ec655cc4694e9f9. Chain 2 (Bitcoin): anchored in block 958083 (2026-07-15T01:50:31Z), 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/JPVI02500297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffa34ac029638596ad2649619bf09956f33e17516ffa07d35fe01f12f86eb1db. Chain 2 (Bitcoin): anchored in block 957780 (2026-07-13T00:36:44Z), 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/JPVI02300346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2ac6f7275eafb69998c7c154adcb9c6b9799da58021a073e054a73aa0abe41b. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/JPVI02500299.