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 0x34663c51e1191f00fee5c0eca5f79b5c9902c68867f27a468575273160bad632. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/27564666-5ed3-4ccf-b52a-8f2c18dffc96.json and https://artists.proofprofile.net/proofs/artist/27564666-5ed3-4ccf-b52a-8f2c18dffc96.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 0xc87e6a5d2dc45ab5e856bcabd4a107f2b862958c89157f053763bd3fbc825c66. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/CABYB1700011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x873c783deb94750ec1503aa4806c301e87e84621829312c016479acd3efc9e40. 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/CABYB1700012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4bd054e0c27025b5c355653de3343507ee8952e536360ff9d725940d2b935a9. 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/CABYB1700013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee459ea295e7630cdd9e650a15c4a5cf8a7cc1f97f2ecafe66703c11e1a6efb6. 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/CABYB1700014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa7a21119396c21cb00b0442a8a804a2dbfa0e8c90f47db60981697cb16ed768. 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/CABYB1700015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffdf499ab2a7fb7ae2defb9001e71e316a7b5b1546aa30da32d85588c41c56fa. Chain 2 (Bitcoin): anchored in block 957032 (2026-07-07T11:43:09Z), 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/CABYB1700016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa09ff2bfe75a8e846b9b1c8513172cb3161184ed801f9f0ced1cd2fa22f9f58a. 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/CABYB1700018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x278a7e8e5ebf4b69d096cb613b5f4528b438ffc33cf7fe733bf766a1409d710f. 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/CABYB1700019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x106adee72bf38905f2c3dd75d48f1d79963ec233e77693309f482d9dd5099e01. 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/CABYB1700020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48aeac3767510e0baef17e741e728525447b04462b5e74323123ce5eadc3e807. 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/CABYB1700022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39babcc1a5838420ea6ef675e642c9c281a74d390e2da73a8087a291f8040c31. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T19:42:56Z), 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/CABYB1700017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1fbcaa468a5019683d88441f81bef1ed462075da300005264ea030321c18046. 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/CABYB1700002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7fd9d355f4f8fb2088ffbe3fb98f95b90101a50774d6cd0ba4acdb0e1589b33. 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/CABYB1700004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8db10dd58cd5110b4aa8518a058a0dbd686ec1b9cb05a564f5af8f5df76a8622. 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/CABYB1700005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c29666f45edf5369135caadc93aaa596ec73f3aef80863cff15e025046957cb. 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/CABYB1700008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7cb752048fafc828b76603c04e55b994ea6cc44209af38e8a9e78b2ce5f1258. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/CABYB1700009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0343f9364a06afbda9895587f4743dc92f7ab01ee72b834ebd9dc8704fbc36ed. 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/CABYB1700010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x873c783deb94750ec1503aa4806c301e87e84621829312c016479acd3efc9e40. 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/CABYB1700012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc87e6a5d2dc45ab5e856bcabd4a107f2b862958c89157f053763bd3fbc825c66. 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/CABYB1700011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4bd054e0c27025b5c355653de3343507ee8952e536360ff9d725940d2b935a9. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/CABYB1700013.