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 0x8f427546e88c69286fded3ad251e8e149559b44602f8f9560b291e0436fc737f. Chain 2 (Bitcoin): anchored in block 953786 (2026-06-15T12:56:12Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d718a87b-4513-4085-b7fa-e7bb15fb50ff.json and https://artists.proofprofile.net/proofs/artist/d718a87b-4513-4085-b7fa-e7bb15fb50ff.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 0xc9f43b45bfc04da1ccd964de3bd327543dfe71df535bbfb0ce0cfc814ba416b4. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/DEB641800024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79ea44509fdc72525b5f8830d40cf8bc89f4bc7e194852dc921d302242ce4d18. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/DEB641800025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8950ce8c9995dc4bbbe32f956e9602ee5bafef847e47c537c2c30d50c83ce553. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/DEB641800026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21aa3dd543b5f4daa421980f3499f05f57f816c484f8176a1c81badc501a91e9. 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/DEB641800027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x487c5f890a5c3794bcf6a99625e29a82e5065f22b5af0bc5cd3457dbf1c9e507. 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/DEB641800028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58fe3844f87a130b1e6da4b216ebeab0f936ee0d617ad6206689445554d05175. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/DEB641800029.
Hey, That's No Way to Say Goodbye - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde613d5bacba3e430663668fb190a46abb3b7c9677f4bd4c936f997ce633e228. 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/DEB641800030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x925fe992972058131e058f07f58830bc9b7fabf2e79d5216cfdce511a119dea7. 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/DEB641800031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c2fce3842f68fb5c579649db4e766bef8c431500d29b4d366581be93548c2d4. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T11:01:45Z), 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/DEB641800034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44ac0e17f59f7ed09ead8a0d65678969e31004c3743c4af9d4f55830bf451f0b. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/DEB641800037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8950ce8c9995dc4bbbe32f956e9602ee5bafef847e47c537c2c30d50c83ce553. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/DEB641800026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58fe3844f87a130b1e6da4b216ebeab0f936ee0d617ad6206689445554d05175. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T06:56:07Z), 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/DEB641800029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde613d5bacba3e430663668fb190a46abb3b7c9677f4bd4c936f997ce633e228. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/DEB641800030.