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 0x2556bd74f23fb17c02e30311b3b7ec41c9c6111e61c59ed651c5fb15ea10a181. 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/b3cc401b-7849-4bf9-a271-974795b4311a.json and https://artists.proofprofile.net/proofs/artist/b3cc401b-7849-4bf9-a271-974795b4311a.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 0x901d9c585c1d04384e54b7d7efea3a241e257eb982059ca97de66c4f8a7e42db. 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/QZL432200052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafdee806496202b3435c7cb252a5209ce5a7b94f4680d205bd7311c73ef3c202. 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/QZWFH2366161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2402321709b12fbaffaf690a371099ce70784b2a3909258b79261bc8073d656. 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/QZWFH2366162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d0442dbd8d8af7216019449bd95dad5e7dd8e9105707a74a8cf506593e96196. 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/QZWFH2366163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb41edbddd431cb86e9a8d5e773f7cdfe95923c945ad45ab9b614e8f0ee93ed4e. 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/GBLFP2328077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2efd236addd0ef4a00446ab735af301414f00a220fe3613d1a833145cd489586. 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/QZL432300063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x112fbf84530b95a3bd68d111a855d02ec273daf9514a8ab1ce909abbaedb3ae5. 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/QZL432300064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x420075b9d9324e23d7aa74d6bbc85b3f5466d567a4e8f970cd8ea35eabccbb4b. 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/TCAHD2391817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12ea8dcf28ac32bd2ab3863eae57202efcdb54a1a59983a303f92fd4c6dc72b6. 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/USWL12201084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3fb8ef00c258f4b845189286994874b5fcb6182b59e8ddb8aea9df2aa769703. 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/TCAGT2302829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb892bf811c3ae8949e61b63ef48261b379a163caca93eceadce65c758cab68fb. 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/QMBZ92283931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x764df7d9af24197528f41b5e39751fedfa60670d7b840410eda89b0b400490e9. 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/TCAFZ2232670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7cd8c84dae7d71ebfd98aef31a515126ee1a31c03b7240350022c2d7d3da678. 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/TCAFX2174533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae203cabb54657f6f3aa7b57d785a31398193e51779f77c55991565d1a75b624. 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/TCAFO2177578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe66491a736d4d6922a146207cd3c56382e07bcb7e1aa202d1277a7ebb07cec4c. 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/TCAFO2177593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee2c766e3278dce906523ec9a057dce3e7d659c9df1f7ebb8946cafdc09ae402. 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/TCAFO2177607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32a9eaa817211eca1deae09910292ea58b4261d1cae4b0eae4c432b3c27fe10e. 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/TCAFO2177622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24d2463343f90cb939a7f8680541d05fa80b57b03472612c07fc7f652a21032f. 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/TCAFO2177624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23a94cbff5d5b391049ce551313f98d3eaa34c1930b37aeea75d11654ad27dce. 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/TCAFO2177658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf7c01eba7673da9e6cfacbdd37864b06212208dfdc539cec855c5b5cbec0319. 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/TCAFM2195512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa316ca843c5b0854bbf7ee599bd2f1770dfd277dbc1ce7cfadc2a82b5b2a3bad. 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/TCAFM2193405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd30f7efde95ffb06647f697f18763e14407246d5a850de003f5ad7f5b2e959c8. 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/UKXN22126970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0312842038f82c2a62031082d1e54a58555e45a368ec603a2e5f56e6a850b83f. 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/TCAFJ2133464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06d307839dc15b8f2997420eb485a5b1cc0a1e3a9365df9c10229dc17e2d46c4. 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/QZFZ62440751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d0442dbd8d8af7216019449bd95dad5e7dd8e9105707a74a8cf506593e96196. 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/QZWFH2366163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0de5a3cd28349c963f4a039b3b97cb180dbb8122efa15729f3181fea3657d023. 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/QZFZ62440752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafdee806496202b3435c7cb252a5209ce5a7b94f4680d205bd7311c73ef3c202. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/QZWFH2366161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48edd49f1a4f7897a9f463ee4ba7b64fb0d5ede8f9ad84ea179b007aea8c78c7. 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/QZFZ62440753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x682c4c570ad6d71259752206979098215d97781029bc80ca2f08f6a8607d5fd1. 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/QZFZ62440754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb982626a900cfdc7fe6afb134740e9041a58a22fa84dd5a7eee2791df5c9fda. 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/QZFZ62440755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d26f557e21d848f28d484cc30c532c76616120fe2ea7fc9519de2673a544806. 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/QZFZ62440756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfb0867ef522e4c15e1c3e2e62217a2f13269c1012cc26f0000a5bc116c4f36c. 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/QZFZ62440757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91dc54b71cebbcdab77583cd8d333f89f405a964ca5e2101486600e2d5d18e53. 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/QZFZ62440758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2402321709b12fbaffaf690a371099ce70784b2a3909258b79261bc8073d656. 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/QZWFH2366162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c4f502887c9ecfb794a151d16ce554519a6b9868ba78ad22fbbb9c74c02e7ce. 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/QZFZ62440759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x373a0ff13b6e35aec3d4a966e4094b7767adb7d99b10578de523e7e83c20c8b8. 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/QZFZ62440761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7a7f0d5561016d12dc7d296ea466d1cbe1f7677213b8a22b27a05c198edb572. 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/USA2P2400554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf80be23bd4f91467c7ea932ad034abc9b7d577292d88f53c540ddc56cb3382e. 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/QZMEN2445379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd77e7206bc6556f9a7365d6a53abdc2775293f6aceaa5a5b37c64dbb1d2db789. 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/TCAGP2239717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2611505f1c3b848a6a5c5572975dcfbfe5d8261321951d6be037e47c8caa6ea. 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/TCAIA2489233.