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 0x26df3144147d98f168aa5ba01e27a2506ade9e342a9d738c81bc4935997e8c8f. 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/093004de-6aea-4a15-a328-e67d0d11a09c.json and https://artists.proofprofile.net/proofs/artist/093004de-6aea-4a15-a328-e67d0d11a09c.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 0x2728e442c95b3d37d6854e02b3c34e75c8e04b2d9dc594f2a1b4741ddfed333f. 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/QZWDD2342189.
From the Top of the World (Edición Mundial)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2842ed42d063fc29f2701fad8609ab6de74f144437718df4ff816598a0b3a28b. 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/USHM81784521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb4e7b6e354ea9f8bd63967e85466770baeecda95fe419d891a33118ee3dbefe. 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/USHM81784522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd70092e189142436f247fc6943e39d4d1e264f8f2fbd7ab53c3db53e6f8bcbbd. 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/BK4DA2315987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18d20e589a13fc368242e71d024b73d51177d4319440df4f02324fbb3d90d6fe. 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/QM3DF2219286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31c85dac392dceb38fade9cd382d869bfc0a3ad1316a98eaa342932b75aaef10. 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/MXF152300315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb720d1c315742d7afeeb143bf345f0878ea75affc3fcd697213656c3e6936fbf. 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/QM4TW2332015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x893dd7f55d1f3a341b4cd7c107e9f06329f02298c12882c02715442a84861297. 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/QMDA72222037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52d4c7b788c9ee7f9c53825e6d5bd2fb123cca8e24fc225ab9444f6d085333aa. 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/QZNJZ2268075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cf30792423d8c9d20bd452eb48dd39e2dd79e3051ea670be79ab8ac54b25e27. 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/TCAGC2246372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x425698e21deaba20417ac9794611031336f66fec075455fbef64cce0a00833c0. 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/QZNJY2182150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d7a1bba74ff7658a16f350d922f871e8281119a23576ab0d52bf83d566598fc. 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/ARNE52100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1b2f5f0681eec8f6c074354ee939020a03eb2bc5941c16f3901046c3a2c952e. 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/UYB282410803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b2e589e9117de14a3747c7ad83d61b4df15a65071bafdb471153d5c59a8f3bd. 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/MXF152302020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32a293cc023a33253422c816020d3cfb28e58d875cf58ee61262f210c5564348. 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/QMFME2461282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd07334794fd1cafeb20803245006e80c28e7e702849aa9a3cebd99d27fe39bbd. 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/BK4DA2442095.