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 0xa1102c9ade0bea0202f9a4bfe3f60e1ed1d96ced700efa1a9ba36ea3b06a3433. Chain 2 (Bitcoin): anchored in block 953699 (2026-06-14T22:00:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6a32ee71-807f-44f0-8d12-ab5892105046.json and https://artists.proofprofile.net/proofs/artist/6a32ee71-807f-44f0-8d12-ab5892105046.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Gypsy (2003 Broadway Cast Starring Bernadette Peters)
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 0x9da860b02d6294a9391b58ebd1811a53eba7721aa44ff25a268dbec4f7bc5c5d. 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/USAR20300092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x497bced9a870e406bb7ebd537db3419a49365f66c76895a6df35b69a7208eda8. 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/USAR20300093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05f1af169f289f3d9416cd1297f103860b05e2702cbe3c9fd66e9d75d53f352e. 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/USAR20300094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e18876621e4866821226386848cd99b7ff757f5ae2af2c1d88648c6d567ca95. 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/USAR20300095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee7490ee46794755bcbffac9a399bf5484cf77fbaeeb71cc39167a689e7b67f3. 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/USAR20300096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e61cfbb556a6f1cc6069fddf8c969d687f830b24fc7e9f80288b1435b2b3d71. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USAR20300097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5227cc6a3de201f0314bb986b8273084df28e861fcb0460167ce0dab4d12757a. 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/USAR20300098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39efc618bc392565bc454e629be785abce939944569db578de3c9e9b060911ae. 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/USAR20300099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde24798fed06a5ff636652e6c8e70fb1339207b9cdcaa3d7992ea8458a17b274. 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/USAR20300101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x137eb38ede77cff90fe7ce9f480e6bbc2889aa6d01b04888229f965b740779da. 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/USAR20300102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a7974084c13a62cc1a897a2f969fb93f2c8f11bb553c85d757eabf17e7f783c. 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/USAR20300103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3fb979c11fbee453f5ffae1dfc5fa40a3ed5d6464a82f790a0f22a504454143. 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/USAR20300104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce87a68bc84b993137eeab3eb128fe4b8e66451c616ad9818f6980a79accdd78. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/USAR20300106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe677f8522b7e8ddcf204dc37bb0cc5d8a1d8344335954450d0cd7d8040d4cbaa. 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/USAR20300107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68203ececa548a0ad67edbfecd7b30caa347daf6138abf1fa59d4d492cc81cbf. 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/USAR20300108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5f7e25aecbf0a01f3fb43ca772aac0bec98caf5f384bd3042759e363c9a7de3. 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/USAR20300109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87ccd0395f879b5105581eda722cc9892b6b1754ef0c068a802c5337f0c3e946. 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/USAR20300110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17f1f1645527e6173c6f9496f70400bf2cdcff761187b69b3559f56cfe6fd675. 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/USAR20300112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75a4f081dda33936ada8f3a0aa334f8bbb6c2c0cee92d48065d5dd9cac211f2f. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/USAR20300100.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x442c7a57f2a01ca61b5d046bca1970363f35732b8cb074abe0fceb12761a536e. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:11:49Z), 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/USAR20300111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x770fb6717e3a64d8d05834a9289e95b1835689225063d3332bc42bd6e2056623. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/USAR20300105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x304299574b3363d1638f3dfdb1b2042d81983e0e398e3bc2b98f239e9c3993b1. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/USAR20300113.