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 0x035bf1246e67d675fbd0b07ca16d3218feea6a18ab28b54ea065eeb2e16f2f3e. 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/dbe2aa08-e5ed-4831-938a-9a1b115e0986.json and https://artists.proofprofile.net/proofs/artist/dbe2aa08-e5ed-4831-938a-9a1b115e0986.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 0x777d344314252b96ac3bf6bbde2b64ca80845da227482cce8af3135c857298a2. 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/GX3Q92470020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfabc8eef4e0086b5ae8526c92544c5a0d0d91c08614e8315973bb9f032fb294. 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/GX3Q92470021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6d11b282fcfb980fc2c6f7cd2b52c0cadd5957da9946bf9e60e824774e10410. 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/GBLFP2495779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa445aa52881e01aaab8e377a4d514854152eca2c677f9f6d73ab6cab94e24f93. 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/GX3Q92470019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8971a97a573e41cef427f5b439ce84cedd60c7fa5976eef5bd42a4c4a17a02c1. 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/GX3Q92470022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb37bb2cb5f99070ff4265ea9c130702c7fcf82e9bf78954f3bf0483f9ce95a53. 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/GX3Q92470023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6806f70fab5efae4a35b6a23b4658f3d65fd8d2a496579f40495805aa0354a83. 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/GX3Q92470024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18fa78bac41fac076c75158989d2258ed96c00988555ff1c70d4cd4d117f8f38. 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/GX3Q92470029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51a77b4142bb12614200d05957c71a6e80bfa49a15dc2275891d6f38016b1dd1. 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/GX3Q92470025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd81cbbd295670bfefac5a599f2c9c12d3751c6560f55adf74dabfea72318d923. 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/GX3Q92470026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76a8e688dbda598001a634884f71bfaa09f09749a30d8e40d96f93c8a9ba3902. 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/GX3Q92470027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2768d5291c5ec13e54c60b6ec6aa1a5727971b95e3dfbd7fe1db0511f5f4829. 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/GX3Q92470028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cbea48005af08d9a05e762fcd7e50c373f596b4816c088f5051218469194072. 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/GX3Q92423520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe82a5b40de59ac113bf7624999010c74702b06751c902e3dc2214228a9552e7d. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBMA22315525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9454e1a28604e67eb3e82f236b9abfc03dff09f404e8802a1499e9b9b5c29af. 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/GBMA22315524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5161b26550f98224733d97479afe47a7cd8f793005d5bdfe7fcbb8401da1e850. 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/UKXN22378713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d12b9f4be43d8c4bfc23eabef1996c804f1f0191795aaeb14581c91e3d92e54. 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/UKXN22378714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd4e451ee2e3a72632b8487857aa3e3f782cf69922a35fe609467bced0def477. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/UKXN22378715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57af645328f4a482df3ce3ed264433eae9503f17982d4817902fb36cf0b2633d. 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/UKXN22378716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf2090cc5f47e519d7ff1fb6e38c01850856f0445d998a3f4ed56c6cf4e4202c. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/UKXN22378718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d7fb27991c1caec6ec49bf0af041a7c2327b04354ea9c22f999a6dabe58fa6c. 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/UKXN22378722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24ce30300938ea1c97875b40609b0eac96f63014d3fb4c6b5ec442aa70102fa8. 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/UKXN22378723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe34067b7b7591608d43ccc5ef3ee28ea0f5260688b2c9f06a123e051f8facfc6. 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/GX53U2405779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f7f0b0ec646dc1969bb12a73ac968bc9e98232a2ac954d70fd1bc4c19b8ebb3. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GX53U2360174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e7f871d2a50fdf406ac419318df7a69bd4ac4c356c6193f9ed33bd23b3bc5fc. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/UKXN22477295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7118b274a94d82bd8a9c16fb0e0a86a49ff462c713c71f69dc701306cc5281a. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GX3Q92440226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c402997a6961bd9cb4778bd813edb1ded17cbc647f3f5e6f9de85f15aa141cd. 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/GBLFP2440086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x171c022111883a63f05e58429432feb628f1580761c2bf265efbc02edb9ca4e3. 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/GBMA22309765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5831df2a3a42c5e22e619661ad235ee7f6757693a68411441788b0d624fd489. 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/GBLFP2333119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fefc47359f2f67b7ee16ea0add97fe83bca21d6d76986a3e6f003ab2734ce89. 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/GX3Q92395510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x868d5e758675f61cded418f9856826175dcce35bac1a2f62e847d3745dc177b6. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/GX3Q92017701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe82a5b40de59ac113bf7624999010c74702b06751c902e3dc2214228a9552e7d. 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/GBMA22315525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9454e1a28604e67eb3e82f236b9abfc03dff09f404e8802a1499e9b9b5c29af. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/GBMA22315524.