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 0x63011a322fa1486d7ae7871393445212b79b0c9ca7236965f7f7b45e37aee825. 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/6f371a11-eaec-4c79-9fe1-6d3705d8efab.json and https://artists.proofprofile.net/proofs/artist/6f371a11-eaec-4c79-9fe1-6d3705d8efab.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 0x3e199e34e0e18acd98c031e83b9bb82f4c3297ee3c6a4160e0499f5046d2ee4e. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:42:17Z), 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/CA5KR1919128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c0e9aec9dbc41aafec9445baf6b1f8926d31dccafd96cb9eec489db8585e0bc. Chain 2 (Bitcoin): anchored in block 957965 (2026-07-14T07:07:52Z), 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/CA5KR1919132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78b6e09ce3670284fba820197e94dd2bc262bb51374fe4eb0bfc1a42f004a993. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/CA5KR1919133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2eb9956227bacf0aecdc2df88a8b6a7502136aac8c85a69eb3472099598d16b3. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T18:24:32Z), 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/CA5KR1943979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73892b869758d2cfd72a0d8d9b4bc58ca668e4d29c8660173cb24171e9127292. 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/CA5KR1943982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2cd7ab62cc3f54af8eba49e36cd8eb494379780b431bf260be2fd8dda5f794e. 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/CA5KR1943984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c083be46702fa8861ea95a77e1cf7ba6c44d2e52c46cf29b6e7b3166839ba94. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/CA5KR1948392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa63ff4e5c4245d12f679fedc1f611a97d3d12c0dddedae97f5b7f0f53a51efc5. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/CA5KR1948394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d5153e2eae083126b56d9da4a9a9048257a878d647593394028e2866b7fd96f. Chain 2 (Bitcoin): anchored in block 958776 (2026-07-19T20:11:59Z), 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/CA5KR1948400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f459bb4bf1a099cbe330498855f6eecb291c8dd968c986205a73d0507ff89e0. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/CA5KR1961405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x716fabe3cc4e7c0d314a618ab6e09d81dfdfd3d6b73510f5320dcb920cccbf73. 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/CA5KR1961399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74024b3c13125a6c56956506957d8200ac267cb1880a86e55dd50d7b00f7deab. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T06:59:40Z), 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/CA5KR1961411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0af5040fc12708d58ad0cfb2633a0bcc1fae37984ee25a6313d55ee8e50e3c43. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/CA5KR2049921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbee092c22e7f3332f1b1d32f5d080193562b3eae97bad689c464d1a6388beed0. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/CA5KR2049922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9987f65c6123288870baac1ffeb79eaf31d226ad59ffa7fecfa158a7e168f4da. 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/CA5KR2049923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa248d4e7f1e286dc04a72bfa83183615039e885c672f5535d1ab103302893466. 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/CA5KR2049927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9987f65c6123288870baac1ffeb79eaf31d226ad59ffa7fecfa158a7e168f4da. 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/CA5KR2049923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa248d4e7f1e286dc04a72bfa83183615039e885c672f5535d1ab103302893466. 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/CA5KR2049927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea7b0b2e0371480b40329b1f90f3f7eb9b2cc4cdf167ffe84a23f3642c1979ec. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/USUYG1443820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40fde950513c2c43ed1965d29ebf27c4bae0f3492ea621c51d9fda85a082da02. 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/TCAFH2046494.