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 0x06d3c0d4b4446a9870379cb30885393ba1a0d694f72318b2d2e56a715106e5c8. 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/9596dcd0-291d-4bc2-8839-e94d208455b9.json and https://artists.proofprofile.net/proofs/artist/9596dcd0-291d-4bc2-8839-e94d208455b9.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 0xe8f534b9fb8e0e53f4f49ce9c389b40795ea427755b3630331893ba99dac1e08. 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/GBSMU6455550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbfcdb2e5720f8366bebc976e763791ca9138a58de786ba0615d12eaaa1f73fc. 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/GBSMU6455551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3aadefc464172931b23129a9ed62a3ce534fa645ac92c41c0047ba4cf4f39da9. 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/GBSMU6455552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a8ef5ce3340a61b206fbd723bb0e3727ad74aeeb5dca4e15fe16cec0ff56fa0. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/GBSMU6455553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17a3e62f0b5962124a3f096505e8ebb7a2ed093c7f06de3859529a5a38d2ecb6. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/GBSMU6455555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45b084ea4cd7efc12640398aca697c61407d326d812e1fc88092f4d051865837. 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/GBSMU6455558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8572d6212c16cd22e077d1725f7d1eb1ce9fa684c3e96a3c2541c14d527acd1. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:41:14Z), 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/GBSMU6095278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa773e24b596a246263abe877e65e765f931b5eeb9a9e90473753fa2f8f4af749. 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/GBSMU6095279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1a19779accba15fe31eb1a1e0b7623b88544574ce9473b1b8b105b9ad2eda44. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/GBSMU6095282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cf599f19e0333e14fa7e8a5cf60481f9ca22676b64757119be70657f90115bc. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/GBSMU6095284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x827bd5ed3061428747db6627e4a39118f11451c8bf78bddd100d4743e9fd8739. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/US7VG2185255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7585d2b40ba69cf81ecd1b77a3dd21569c830ad8e9bacec31f7026041d452e95. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/US7VG2185256.