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 0x28bfee336f970bcec237e3fe231a687b8609a7e66ddc49be7b4dc3081cb93afe. 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/2e1e2320-dd95-4a2f-84bf-d0574aa7a928.json and https://artists.proofprofile.net/proofs/artist/2e1e2320-dd95-4a2f-84bf-d0574aa7a928.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 0x4049190a0d4dbc75fe0e811ad508fd7be8a9fae2104abe056ec309f4463358f9. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/DEAR41920212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbe8a244df724c2c07f395d4786ae8c52e1ab00de4019cd257558129c65c06a9. Chain 2 (Bitcoin): anchored in block 957852 (2026-07-13T11:25:45Z), 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/CH6541963584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61c5d612c903322d38bf9de181e45ef04e2a63e3ce8bc930dd4fd80d88009145. Chain 2 (Bitcoin): anchored in block 957867 (2026-07-13T14:55:20Z), 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/SE5ZV2107201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x501347ec9f91545fe32d6c543a5885ec153983bd7c17ab06fd1da5e9bf2ccf1d. 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/FRZ132112120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3418fb40c860a91e6ca1d48366fd7863c410430609516515a39c3ea46dcef3f. 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/FRZ132112110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x260e591349f7b7e3ded6979d14694d5b7fc68ac8aabffbcab0e3c7f8d0381a42. 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/FRX282385935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc59c5c2262363b6514bc31504648998234ec1c9fd37f365e7f105b7bfe9376b9. Chain 2 (Bitcoin): anchored in block 958695 (2026-07-19T07:37:00Z), 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/FRX282385923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x772f3122069df02f3a7ad3ba607a6a0c8d28d2c953406975b2c7d09c69f766f8. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/FRX282385922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5ad0a309a774d15eb95cf34af84ed3921fb620d1f0b7f61e186f60b06dd7bc4. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/FR96X2389953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc94729b7b0899b4a74dabdb0f1141b178c0b5974aff4364a14669f7ea8aae730. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T17:47:41Z), 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/FRX282385929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d4b7be04a4403fbd491a421052f9a6922bb556323dac0ec48e40dd1e4008146. 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/FRX282385930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x260e591349f7b7e3ded6979d14694d5b7fc68ac8aabffbcab0e3c7f8d0381a42. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FRX282385935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c0d5f239babdbd981c383ced3295c4613b65c4558691ea04b9fa9eef4f7e26b. 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/GBWMY2400710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f7405b893417ce250346367eaf22eaf4db6340ea9e23ce6552440022954778c. 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/DGA0P2447250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d60b9dde979aeb0b947628f77b8add560f4bfcf887d72649d336404d4400c43. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/FR2X42598485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf02f3974289b04063943a931e927a2e35bc4cbf0f554ff3e162d1e9a16e327da. 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/FR59R2540299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc525959677363639c58c66b23069b890b7101fe258e772abfda265e07a56403f. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/FR59R2540301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47036bdf514a13f4d0cfc39f6c24bfa76ba88c1e8ea956c63558afda80df16ed. Chain 2 (Bitcoin): anchored in block 958380 (2026-07-17T07:07:02Z), 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/FR10S2582184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd90a694fc361a99699020892a2f781b2e8beabd1f4cf9cb86ac02d0ff65d45b4. 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/FR59R2540307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85f006f7a11144b96024c33281247da9a39cadc9794657183f75db99b4bfc5cf. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T23:09:36Z), 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/FRX762511040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9062aab5e1de48aa246cc0a66063aecba9a486c44ee0cedcfc7c9f3378baa528. 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/DEAR41811772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1f085032bd1cf76206abc2a8f39cbf94fa4c9f15499ec4fcf2f59d18eca95b7. 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/FR10S2397444.