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 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 0x140e0985cad33816be32885d17c7762f4d7be59c4f7fc35a75338ef6c4271734. 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/89ce600d-4d39-4601-9b47-ae0b095c8807.json and https://artists.proofprofile.net/proofs/artist/89ce600d-4d39-4601-9b47-ae0b095c8807.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 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 0x68df377194fe921cf12649080c622db7aebddf3760237b2d2fe5c44d019be565. 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/QZMER2304312.
kaleidoscope (from Young Pop Renegades, Vol. 2)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5e52d394f8f7bb59ceae4e02c1548073f2749afaf3567739a2b830d2d7fe765. 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/QMQ3X2402271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b8e24bd7b5b545fed6bb85f1068f72fb0b8de218181c2efbcf83cb79f481f93. 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/QZK6J2388338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98bbcac8dc50c177410018d7136f0a68e10901a337d7f28287b4756838943254. 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/QMQ3X2301689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab2008d8820d332b789e74b2fa69ac0407ddecc7fcb4e1b8379d138f4083a749. 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/QZDA52393071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82bca146fadd91cf7b5fcf477c08b4e5c60c0dc2a057f2d7ef1ae3bef410ca89. 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/QZPLS2260379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x172e09c9bca81ae39ad0bbaf4c7cc6f9c5fb599a4b8790b272e3d41df7205690. 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/QZMEN2266957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb87de6432e40ea7a7a107be02937862f9a518d5c0ed0f63547ac32779d088e33. 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/QZK6H2208493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33b422cd6d859b78db52ea10d1e609538f7a56e577814fdfeac8fc68c26f8932. 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/QZK6M2219787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf12bff61e663ee9fa29569287f8ddd552709946f0b8b830683cf93bbf7cea676. 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/QZFZ32265245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6c1aa9239bf4c8f10687c4418cd7935706491c0282ba0fcc45358359cf28e02. 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/QZFZ22259929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd78d52594130ce0c5dd0cf9a713be5b21d4c0216e7fc8705ea5842b84fbf2656. 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/QZPLS2108087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8d3574a10ab51a0893b512fd82e5e30fb747db32da18f51fcfd421aedef5da6. 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/QZNWW2152622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa66b5ea2d417fbea80512e6837bd4d4ba1a1105209b95740138b66c8519b1b4d. 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/QZMEN2101464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe809d30671d02c13367f0e29f4e90fd010ed0c6756fed627fff370f754b870bb. 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/QZES92137349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe90eab087212c6f244e74e7ce2fa423a4f872f91d578713520bef40c53b92096. 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/QZFZ42104743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca83b585cb03e56eca71d9b04f64faa99f7539c727c3a55a767274bfe41809c0. 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/NL4NL2218732.
thanks (from Young Pop Renegades Vol. 2)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba01aefdf4e6df7b5b3a0bc76da8d2eda9ea152678eb22f9322f04efe1cff18b. 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/GX8LD2356715.