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 0xcb810ee796f421b4a0c8acb276b88e6259d7ca9d33a4dda8db9bd06b72d33578. Chain 2 (Bitcoin): anchored in block 953654 (2026-06-14T16:26:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/475a63be-e340-42b6-861b-25cbf8e0c853.json and https://artists.proofprofile.net/proofs/artist/475a63be-e340-42b6-861b-25cbf8e0c853.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 0x3c4bbb9880c375f40f8a87ae219ad527272d8a4723d9d2c6d76df637b318db4a. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/GX53U2483416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd15e8ae9af00ff19d41af3121d7addaaf849f0e7934eff1fd04520d13d921d9e. Chain 2 (Bitcoin): anchored in block 958514 (2026-07-18T06:54:37Z), 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/GX53U2483420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bf2f869053912923c80355630495536def2df618ce58d9e8cac514b465d212c. Chain 2 (Bitcoin): anchored in block 956713 (2026-07-04T23:03:25Z), 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/GX53U2483421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa55e12605f6a1fdbc5478253c17e1c0805fd23c0ac935eadafe0e50d90209296. Chain 2 (Bitcoin): anchored in block 958514 (2026-07-18T06:54:37Z), 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/GX53U2483422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71360b3059ccb79567f242754face0b3ccb66084d1ab07824788477435698d0e. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/GX53U2483423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63047817925939a087f09cabaed272747d55030cc25f3e5556a14a2d2832f701. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/GX53U2483427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf4e5c61b12edeaccc29738b6e8aac6049ef507894b15f96048174068ac0f389. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/GX53U2483428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x228174735bc06bc5d27f5ef2f25d607e403fa8cd20a5c988110bab8b23fef12e. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/GX53U2483429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa98e56d7f2e13e2cdc7ca7c841da8bea667304722fcb2a72729fdcb53046d5f5. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/GX53U2483430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2967e4458207eddb71808109ee4567d68fa23b5e5443db24a2caca7ba563fd8d. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/GX53U2483431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d20ee951b2482a9c161da9d10b09878e12f5a1a09c26d33e3232c4d64fea5c7. Chain 2 (Bitcoin): anchored in block 958514 (2026-07-18T06:54:37Z), 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/GX53U2483438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06fdaf82bc8d6ccf7a5ca8e2688b2ffb5e5bdfeb2d52e03ff3cb96e2eaafd6bc. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/GX53U2483440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0023750cd50ec4c792d6086f5565fbe15af90b43915aaefaf5833d77d8e29818. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/GX53U2483446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8da4d9d3ecfda00f5d256bbb4de9bc16f8aa1b28917f76e8b3053a427efd05e. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:02:45Z), 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/GX53U2483450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11ae11143fe7e35851a42c4210c28967ff6c7e3c55f9cca881da61d3a6697b92. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T18:39:32Z), 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/GX53U2483460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0394c653139b3cabb65acd47ce36ca6b4d45fdc8cdb82da617de3f1474d38456. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/GX53U2483461.