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 0xcff3ccc9d4d5235fb70568a50b442e7c0d2950b2f486d273d0d00fe9e5d7c961. 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/e855b2a6-7294-438f-88f8-ff014f0747f9.json and https://artists.proofprofile.net/proofs/artist/e855b2a6-7294-438f-88f8-ff014f0747f9.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 0xbe042c651efe1880cb68b7c348a28ee5c2545fd9b4ee0ba108fe6398f18b2da8. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/BEN581800040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7586455624891443ac673cd324d798d681a5ddb3b6754e439fbf64c4484a3d4c. 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/BEN581800041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05c51bb45d7afb8d75b17fb611f6ac20cd19332870cdcf1869b27c63e0bb8683. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/BEN581800042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x829f75c141f43f59cd2f83ec6bb27b69b157b6a9c057d7c919b1746de3efb562. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/BEN581800043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a3e224592b497b96345e74cc3fa740824a7b6a7ea9d89f3cc211e887185772b. 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/BEN581700807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x054dae7e81dfd0e9ac5580ffde2b90877305dbc15795db9c482b77363bc3be8a. 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/BEN581800044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8ac00ee26095c17d4f859da8cf0b27da480cf1a6421a5d00c086e1990927d6d. 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/BEN581800045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x215f5a6a0e8418bdc1060050cb671e67bde953d9e3282fd6ef9a6407ab630de5. 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/BEN581800046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6dece5700273675c5f75d7d9c487f40b9089ee6d95b6da268025c08e32350a2. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/BEN581800916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb07052bab1efa2a25893aa4d0ec91ba61b6cfbe1909da1e997afebeabd667720. 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/BEN581800917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8ac00ee26095c17d4f859da8cf0b27da480cf1a6421a5d00c086e1990927d6d. 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/BEN581800045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a3e224592b497b96345e74cc3fa740824a7b6a7ea9d89f3cc211e887185772b. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/BEN581700807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40eb6a4976bf27124048a419fc1b641fd65831a6fececf06e1a3c7eb51410f96. 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/BEDW21500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6eacbbf1a349cf1f690a068ac6042240c5b458a1880947384d7ece3bd94091a. 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/BEO721601601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb711c8c7df14f35dbf0a99acfabdfd38650e16fed1fd7ae446b7644fc0fcc3b2. 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/BEO721601603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xade7909e6994c38b8468910769a8f792de473c19c45d81eb9ca104a0301fd0e9. 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/BEO721601604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21f89f2e48e9e247235eb1163fad1d6b0b3128ccd8c6e3fe0f609f1005049afd. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/TCACJ1503709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca78628a125f523681bc3dec2fe7e9bcca81eefca0053c11984ed37477fdf7b6. 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/BEY912100020.