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 0x68626e476bdcdbfb25ea4ee961caebc7a04434600e453ea158ec37bfebfcab33. 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/88917147-f601-4f0e-acd2-fa1799b7a9da.json and https://artists.proofprofile.net/proofs/artist/88917147-f601-4f0e-acd2-fa1799b7a9da.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 0xbe10813b847edc5b1a7d66c1bbf4352189edaa2f20cf99de45ac621ac5423926. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/GBLPF0228170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x133c7dfb33c828de07417c93207c07208ae31df8e6a2e5d143c75e944cec1e7d. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/GBLPF0228172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x833fdc5113be84a590d4f1e72403302a6dcd9c3da795825c425f019756343adc. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T07:58:41Z), 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/GBLPF0228176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07363912ea40e46514aab18f8815e6db281f070340f27fcad88f6378df6f3dce. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T15:37:52Z), 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/GBLPF0228177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd293b3f2205447f7fd41b6d5ee08cbd589e1e979741993d7fc593ca10416fcf8. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/GBLPF0228178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16b68e2cd1285944d102c9ea85d719b2bbef9529655b2803c53d3cb270886cb3. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:35:16Z), 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/GBLPF0228181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68d8c58743edf03a1cc042464036460fcace046c0a7517f53b780d33669229ca. Chain 2 (Bitcoin): anchored in block 957603 (2026-07-11T20:26:17Z), 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/GBLPF0280693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19a1ca456b360bddf527967a9b230b5c7ca6ba34229bf1058834e50ca5a3affc. 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/GBLPF6671363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x566c67fd97d30f24a62144d9be43674d50dc22fdaad1312f5a7f269cdafcda9b. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/GBLPF6671367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69a2c9b32a3bd21c0a57533ca885ee36d5a42af370b920dea296e1fea0fd3435. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T14:05:53Z), 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/GBLPF6671369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bbbd4229c8deae3be3b71fc39ca23a4a0853b8e11b43cdb2cd6b0c4294468f5. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/GBLPF6671371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3ba841c79fa23ec4ed63ce1e8b0e0ef3e2b5d885d4334becfb281e9996cd98d. 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/GBLPF6671364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe552f828ace93bcff8baea04574a4128c54cfbcf8c8d3ea56e9acec81cc443f7. 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/GBLPF6671365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e38b0606f76f278e42d03d903d88bf77bf66da8c2cfa3139d40b94362289ba6. 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/GBLPF6698175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x124733db7cb2d820590dbc630069747bb87470637174c85b7a5aad3c76dee8e6. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/GBLPF6698296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c86828439d37b5291b130fb695185a556eac9538d0caac8ba08e38b34399a47. 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/AEA2L2252253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48dc6417d4577b1b6b47a54d565c33096860e962441837f5d048cec24ca203d2. 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/QZL5N2315612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5a64a2d8f752b7baee66d13a6c3abe7354aa9870f895be1b866953a2bf03bcc. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:10:53Z), 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/QZL5N2315620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x255584dd62a9dd5bd9d061426f5f897ab69b27f171c16d5987700a6c3094e81a. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZL5N2315618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f047ee58fcdd9aa081673953bfc95e704ce71944d4e0b029e148bdbb045a3f3. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:33:27Z), 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/DGA062378064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dc4562a789260cab5d961af22fcfef3ff0917e3c8b770bce59cf8309c1bbe2e. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/DGA0M2318547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46ebdf35bfda55b17514b0e0c360399d571c798e490b25d07fd5d49f5d023dab. Chain 2 (Bitcoin): anchored in block 958668 (2026-07-19T05:16:11Z), 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/FR10S2441945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a04570506eb1ab358698196f5a6ac20a95f35d1833f73ec40a4af852dfecced. 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/US7VG2590450.