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 0x61ec434b11d54cb2793533e141c18c964685da526ba15becffcf7313c16850df. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/58513f64-ad04-4a6b-97df-1fc516062a64.json and https://artists.proofprofile.net/proofs/artist/58513f64-ad04-4a6b-97df-1fc516062a64.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 0xe9c75336ac8dfb4604a7ea05252ed07833945c87b03e129f9f4d5ea17b4be4db. 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/FR9W12115124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1ef81661cada500e4e7f2348e9b5e77554d2cb545aeee5dc31680a9f88071c5. 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/FR9W12132957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x166a81d90827cc4e9cf31a8aed7d6c541245e544362cb1fa4e01bab76d10515a. 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/FR9W12132959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69ea76feff1b1523c281dc6e33460ccaeef7aeed877beac36c04531bcbaa68c6. 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/FR9W12120067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x984552c72a9d64cad89c814efacf80bb3f45be9dda07d5eab92183f659b0ec96. 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/FR9W12129248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3edbd7eba8570d5d09157ec7d1405887388cf8cc8e2358171ee2d2b5e7b0e6ee. 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/FR9W12132965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ec30e10e034a66a775e50bb0a67db14db12838d3f0f365b061146842b0a3481. 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/FR9W12016702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca74855779980b04c6d7201b9779bcdbcd6b94e2d91d0f07a317417e3b24bdb7. 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/CH6541968771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a901265e9a247901c83a69a4c3d95c2ee1b0bc0389d68a30810c4a9a93d8d16. 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/CH6541771801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1d0bde7c09fc482f8b71a07c8ad39822a7b4de4df0cb118f89a887454481a4d. 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/FRX281977813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb55731ab7ab6dbfaa5a4c2fe2ec792bcfe5d151be27e3460e22463eb448aff4. 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/FR10S2042916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94aa5750c9f5732812e83b0d68a23762995979e0ff096085da27104df1d38e10. 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/FR59R2055128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5bf9b98bae91ad3978eb1bab59bf645b69a97d15717dfb3f401072de6257a12. 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/FR9W12016701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7b5ec381434bc5975633bbaf4a227cbbdde89a79989491a78e09ea25bfb8210. 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/NLS6R1821349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x427cbed095a586ea71b235fcd6885727399bfde6a1a4bf5710d12991d3f3fbee. 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/NLS6R1821350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa07869d40adbd08b304f0a01395f3e0efdff0835df854b99288c644c5d248d9b. 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/NLS6R1821352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05a7ccdb96b065f946cb7506ad9b7b0892705b145ed28a630fb5d97a6dfcf90e. 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/NLS6R1821353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a84f37e69f5a6ab57c6540bf3c548a6582475c13436a4321d361313f65cd6e7. 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/NLS6R1821354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeecd2b0dde8ed9bd8b22a779b8f34e23e7ebcc96e9a685a582dbe643111369fc. 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/NLS6R1821356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f2f71ae76c69348c3dc512da0f5e2fe74c5171ce2d482e4d2015cda6cc41d68. 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/NLS6R1821357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefe775279aff116f1652d2ef1775b20ccf53c115db236152ffbe330865618990. 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/TCAFS2128046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b52290d981023d018b1eea2b69bf6b46013efecdeddce69637541fb5a95684e. 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/FRDHV2500030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cb9d8a2e02bc8be3d0aaafeee02c1dd1d8fa2426a6302beb2a1ecf295754c64. 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/FRDHV2500040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cab8e4940c841ae437ec16d7126accd6f3630538a7174d37209db206266cd40. 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/FRDHV2400050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b16b4628247de54213d10403428929331383bd5a8170700d36c2022b8b9f9e9. 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/FRDHV2400030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e1f87e2a537eaf8dd32b5da397e839074aa0523ab5118f487491531aee1de45. 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/FRDHV2400020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1603d77e9bd99385e07bb84cb3e137c1e78eecfabcda60474613a2c4e9d91570. 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/FRDHV2300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb43a8e7dfc480ae7f0d7253eb311554ef3ccecdb6e37f357e66bf8ccc370cc0. 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/FRDHV2300020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd42cfd2896ec971ff3d21ad9623760594c660d9e6bc5ad6e591dd4d1bc435717. 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/FRDHV2300050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ace7dfc9bba462fbb57ce5506fa6beff01ddba0a4836208591f76c4a5449963. 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/FRDHV2300060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6accb75f30694c50fdc1eadb44e79b815e73caca06155c13c313f403cbf377e2. 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/FRDHV2200010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4842abc3a26295dcfdf4f1e397d7437296d518d193227a9ea92860318447a9d1. 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/CH6541947198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa936280ea3dc3649cd175acc2ea2064a6556831b3e17679fadfdb5fd3233bc12. 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/CH6541989543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe66e0bc0910ca4d807af4a6715c8a55536a29ae9b82af484e31f06379b70103d. 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/NLS6R1886815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x599da6085fb71903f6954b88bff5b42c9049b72a590197ad80defd9ccbfde3f0. 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/CH6541836026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a2e215f13bb1817e4ee240e8f8e353d0caf81d97ee4cbe424e179050d4eaf56. 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/SE3OH1737299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf476bc537180a747b968770669f4da8ef2bfe6ed6cc4b3670765a870a9ed109b. 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/QZMEP2279393.