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 0xa426d0f654f452d20a7f3d2b27de263d1eafc1693b0ae59581c06343347568d6. 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/50f62f86-6f82-4b52-bde4-de08cff043c4.json and https://artists.proofprofile.net/proofs/artist/50f62f86-6f82-4b52-bde4-de08cff043c4.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 0x71522dcc5bfe2fd37dd6a33429eb4ee8f9c334f3a099d0975e34cba146cff53e. 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/CH4061901555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfc31158f602bb6ae5a1dcf95e052bd3999d748f8a32b9771e58f91303025e94. 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/CH4061901547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00cba0415fb0b35378f0e13e8128e42c01b13a9094cb3db7710e09ddde86fc7d. 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/CH4061901544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x209523da6dcceb7017d6cffc0d2255515f0def39f8d97e9261b299dbfd3e3b69. 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/CH4061901548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb33153c323ba526e2619c0232eba598e5fed18d6cae20ae34f346d0b79a56a32. 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/CH4061901553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc11eb01e07b763a6a961d2e907ad0a362f92fbb27749160b4c62f9fe97f52768. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/CH4061901614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71522dcc5bfe2fd37dd6a33429eb4ee8f9c334f3a099d0975e34cba146cff53e. 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/CH4061901555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00cba0415fb0b35378f0e13e8128e42c01b13a9094cb3db7710e09ddde86fc7d. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/CH4061901544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b77c432e43b47432129daf02a07cd3105ce960b01a7ed3c1acfdd13c6afcde4. 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/CH4061801522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab6751901a3ce31f90e50933691216c363f2982d20a0a6d3289991107687044a. 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/CH4061701485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb899a68c17fd97d690dd13f4bdc762f9a35ebe5498649466bb7daba7ac227e4c. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/CH4061801523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabf21d2caf134a2ced207a257deb8a58cba630e14125629e787c8e77dc00449c. 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/CH4061801524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa38a48d423163a210d7edb48c5110af5b3f3480a257a3d172f0787f0d8b01e9c. 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/CH4061801525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1343adefb24dccae407482dd685d1d4ce0bac783af46de869f4743c22fc3004c. 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/CH4061801526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7af8b73510572593aed87e0d074f86ef38b26d1263b1845e3fc31417c6158c4. Chain 2 (Bitcoin): anchored in block 957065 (2026-07-07T16:43:21Z), 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/CH4061801527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b77c432e43b47432129daf02a07cd3105ce960b01a7ed3c1acfdd13c6afcde4. 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/CH4061801522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab6751901a3ce31f90e50933691216c363f2982d20a0a6d3289991107687044a. 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/CH4061701485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee45036ddd7eae38a2cfdfe413bd26c12ac0788d89188e010a3e0003b8ff4c8b. 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/CHA141700021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa88cd74cec1f3890ec436e4262c13efb14ce5bb902027f965210c068e53fe7b2. 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/CH4061601381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8d7b8f23d4efa46100995765c23d83b023133a70525cb4220443819d83eb811. 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/CH4061601382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfab8cb6f3943b4266e7bdf12363f2e388c73ece077abcb4d2c061dfb99d15653. 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/CH4061601386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24a988b8ae514209f935b566e1cfdb56dd51e4a2f48a530850a162a22ae227c6. 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/CH4061601387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa88cd74cec1f3890ec436e4262c13efb14ce5bb902027f965210c068e53fe7b2. 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/CH4061601381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4197fe1fe9853427798f8fa75f7b5b57efda0f167bf6229e4e6c3805bda4787b. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/CH6401500020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbba482a6d727de1d0c89a0a1a2a59ddd088389c3d82a6c957c8729c802ef4571. 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/CH6401500021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91eb96d14fb0b39948edeafa2c7b6a3375b7be2c55129f7674757bc566f12962. 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/CH6401500022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d880e094330cfadabeaf70285f7f3a0a880866d62e4ba64b7bd8c4c727aa844. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/CH6401400034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce0ba6d8e8be24c306baa8930d88b4cfa0c5bf7310fd580b31a725b7a39b534a. 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/CH6401400035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4944f76b3755aaec10d768ba9182e59b4fcd81ebdbeef663b8c982b42a6981f1. 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/CH6401400036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68ac4f5354bc4c2ec92d577e4c94cf19fd9791a67b22e41ddc8d88b05a226f8b. 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/CH6401400037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2864968b63041e05ed982697f5f06f6e8670a9690d1485480043a2beea402714. 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/CH6401400038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cd55d4131b5b802fd15ea17d31439b1b4853c29ed4c539f419eb8ac7dc374cf. 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/CH6401400039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85e03eeeb616552aee9835d1a7db2d17bdafa16ca3132a526f364d2f48c32091. 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/CH6401400040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd175de42a4764e704cd2b453999dfb9604217966c7c11b3d73b8d634ef154629. 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/CH6401400041.