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 0xd864db379b18e19fbb75610568deb59a72db0795b4fe908061b11e930ecaac90. Chain 2 (Bitcoin): anchored in block 953842 (2026-06-15T22:22:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ed99e415-b113-47f3-937f-e165306ea677.json and https://artists.proofprofile.net/proofs/artist/ed99e415-b113-47f3-937f-e165306ea677.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 0x0739988bdf784e35a76e2c893313881cf206351bd0bf242a5cc9f72797f820f9. 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/DEL022102017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf07feec671a685a5995f7eaf1c87322818468cd24989c8eccc958b0360357993. 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/DEL022102018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e426badd12c816bce67393743dcc918a76ef4a3eebab2c825b1a01aca4053dc. 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/BENU72400028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75467d16fdceca1166d37c1d177a6d8e35e1fbeed5e897b6a0617babfd2eb4bf. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/BENU72400027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9af03da28e2df9cd84474e3288a811ee3db04646124d8f45c1aad4d342dd98d9. 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/BEZ452300430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa67aa593287284ae835de6291a013f371ed0988c3b0ad70ce3fb42c986297621. 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/SIB152100014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ffb57bb262870e082d15acc517d60f6b68c507dde22184a1ee7e3265d4cd23e. 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/SIB152100015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33409e79454ab17df421ce5608c7bc75f70ef6f03d761219d7481c91b0bcfa52. 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/GBKQU2158490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeec8fd5b9a3dafd33bc6bb3b3009e13c319f90f38b98f17166b3ef0b370d5835. 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/GBKQU2158491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29b0d33d9f1c1b269f5d088a375a70dbde598515d67bb383039987fba5dbacc5. 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/DEH742036024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb64ba8c5bf0a2de8bfdf5ecc79b97bdfdae2a1d15b9f8e3ed5269701f061c4a. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DEH742003607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x575c5765c5e964a77f5e13e69ab28a76489af7fb7e31c568acdd50cef42eff85. 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/DEH741918798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x647a750f54ec14e48c62800914b3446e8d8ca75b50919c7dbbc8ec172c40496c. 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/DEH741918799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88b55942cca177f606e0ddbdfc6aa77df92f7936a952e32fdfd487f864190780. 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/SIB152100007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e415572467f89a547fd5e532f0fbfb42f4492267ee5ab94069f6a5f17010ca8. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBKQU2221002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ac1af318534f1698ecaf3e4e578af5bd749b31f5d204b4c26630b49c88c0bf5. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/CA5KR2098757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0739988bdf784e35a76e2c893313881cf206351bd0bf242a5cc9f72797f820f9. 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/DEL022102017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf07feec671a685a5995f7eaf1c87322818468cd24989c8eccc958b0360357993. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DEL022102018.