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 0xfd2db4c415b6aa22ca3f0dc2d051add5c71ff165c09b2542377e106dd44260a1. 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/ce4d0e83-c984-4b9c-bc50-1433757d3e61.json and https://artists.proofprofile.net/proofs/artist/ce4d0e83-c984-4b9c-bc50-1433757d3e61.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 0x636f213e2439e624a855f07b1aa6ab204bd80cf022031a284d66e1c0248209e9. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T15:38:13Z), 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/USSM19912826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09490a36c542e862b5ac28403807f2cd5aa3eb031e1403acc580844978277463. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/USSM19912827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97bbc7c528963c41112b620c4e38e95c5d3e251cc609c4e0d1644d8901682b4d. 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/USSM10210803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00ad39411b6d79ea79a3a1734a686e2db15188c628be627513eea954bf551692. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/USSM19912831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf07a719a17fe832f302c36af63a39e7f2545c6dc9cc5fd2e8fcb7d2ca19b63e0. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/USSM19912835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8e709ef618b107b1e9e15d9eee3c65a6f13aace0b51a20e5f36216f8b9983e5. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/USSM19912837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4320f7cab2db247fb1f325c9a73295c05708221096dc76c11000d46f121aa8d7. 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/USSM19912840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0380c942b3d30b0cd8e833d989022ff80a24166f3922adf42764c17bcdb14b4. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USSM19912841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b1a12a7ef5ad90ecaf26204cd202cd66d7c1b6a50145d4dc2e5a608a0844bf0. 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/USSM19912842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08e0835f417328cca84c76fbb8049e28bb1971afb8fd812b7caaf939f1fa6a13. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/USSM19912844.
The Edgar Winter Group With Rick Derringer (with Rick Derringer)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4146829b279349f0bb552ea0f5668e111274006ff39a995156dd79d7609deb0f. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/USSM10312798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ab6c5d31cb0810a7e0771e21d17f16d0b7aff9597ff86ee2604a4ed086397aa. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/USSM10312801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6aa2ac7da4de891c15ae37a307c5e99a3011183b1da6c47b2c75583e9d6f713. 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/USSM17200446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0ba941e0318ac936871ebfb374d1d16a6c135e5f7d4a047fcb5bb37c81c3e34. 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/USSM19907675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6aa2ac7da4de891c15ae37a307c5e99a3011183b1da6c47b2c75583e9d6f713. 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/USSM17200446.
Halloween Classics: Hellbent For Halloween
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bf8b6f38a792158546619c486606ce38d6b1de27cb70902d7dfe628b8d7e16d. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/USSM19912832.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch