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 0xd974b0d9d5b41ad21806bcb0c9937a50bc1f87e2c845cab27aa8252c5330591a. 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/e0ae0239-ebb1-4946-a5f6-25640862c604.json and https://artists.proofprofile.net/proofs/artist/e0ae0239-ebb1-4946-a5f6-25640862c604.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 0x545adbd3697392581c762af00394c6df3c4a8a3ccd0281f71f5b1b96133e1549. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:06:27Z), 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/QZGWW2075304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12723689fe85c01121ccc62832c4d88f247acc13c0d38ddac693084964b16b2c. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T02:22:58Z), 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/TCADQ1818359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x048cd0fb14c6e1b3b73c11a6393e97564b205e3f51953877aae041df14ca2e70. 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/TCADQ1821955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfee49c1701c60f953f7ede2f42bf71538c8a0cdeb7eee97074b1aa81a328c0df. Chain 2 (Bitcoin): anchored in block 957741 (2026-07-12T18:30:59Z), 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/TCADQ1821956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba3dd07b43317ff79c411755cda88f2d259aef1b55330b999591b2712f83c40d. 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/TCAFL2199579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe75f7a73e132e5b5af0fda863ac5d3e0a4ccc187b2074483090e262e1ed5bdfb. Chain 2 (Bitcoin): anchored in block 958706 (2026-07-19T08:50:34Z), 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/TCAFL2199592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cd06ff1c7c6c4030fa2c079e4916346f0fba33ef82cf624378e2b0debbb10a1. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T16:03:40Z), 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/TCAFL2199600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c85dca68a324f521439d8daec14c439bdb2dc042ced788eda0f71a0ffcac684. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/TCAFL2199612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa14831549a41c9c64fa2fa110387fdfa7a3ba1e6176221cbbd5a66aa124a130. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T22:38:27Z), 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/TCAFL2199614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x810ce56cf704742db88a2305a6d2067624443c20db2f738e802a1d0440fd89ac. Chain 2 (Bitcoin): anchored in block 958554 (2026-07-18T13:17:01Z), 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/TCAFL2199617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8be6662183ecc2a951c95c6ab1fb5b1505058aa16a5d786881e806115936666a. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/TCAFY2121037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bbbd58496c7c7c24ea7e1525191cdc847c003094817e66a1e97d55343e6e814. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/TCAGJ2209883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8d95dc77a4ff1cba51db35068ef2dcca8851dad66941b444439c8e1ed580ade. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/TCAHQ2381431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6d943474657e993b588f8b6d8bffe35a8f3e4f30fb99b3de0a381d6b5658bd5. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/TCAHQ2381498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dfb70c0b343bedd6b2f5a9f0b6a7138fbcfc603252f182857b0ceca9e845226. Chain 2 (Bitcoin): anchored in block 957745 (2026-07-12T19:20:20Z), 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/TCAHQ2381511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x281ea931848a652f20df9ca3d42ca19d883a738eaa96f39e9c997b93e97fdda6. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T02:30:43Z), 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/TCAHQ2381520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91a6a1ecaef21877cf3960c38d81c23dca101ad4739aa03e1077995586138f60. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/TCAHQ2381527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8541809ed6e8a0d631bfb366a9e23329f174ae78313e7420f01f529a4d557f93. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:17:04Z), 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/TCAHQ2381538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b46da39dba7ff93f2a87fb2d3ca7be525289a4fba0377b46ceff8a464111c36. Chain 2 (Bitcoin): anchored in block 957741 (2026-07-12T18:30:59Z), 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/TCAHZ2481704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04aa92c5ae8e87bd8b4d3c2455c066b9c19e37a293ad1b83bee969753165fb79. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/TCAIE2473893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63bf4c1a9706743b3200af49053827e61079176c74cf59c957b391c77829a7a4. Chain 2 (Bitcoin): anchored in block 957741 (2026-07-12T18:30:59Z), 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/TCAJH2505502.