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 0xfa85adccce12d7653d769a7499b89d337de4f93e17ddda41bf9547518b26cb14. 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/3e106450-8752-4464-9739-96a2a4347a61.json and https://artists.proofprofile.net/proofs/artist/3e106450-8752-4464-9739-96a2a4347a61.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 0x308338aa4ac8a15d74416dd5dc198dc94ff8a3dfae38bd6acac400df015bb4a1. 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/QM4DW1670691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a125c2045ac2b19b9fd2397f9ccbd7d8d361b688ecf2004897f0db846792272. 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/QM4DW1670692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5f1a68113ca8a9eb4fa7f41c8ec92ab73ccb8b9199bc033a21f3a0a144ced83. 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/QM4DW1670693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0bb9c8601be55addad29c845ff51a81d84696b2303aaf33aa1a5e3098753dcf. 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/QM4DW1670694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17ca8033a37c1b50401bbd7a48d7efc2fb6c9882b97d5ae05a1eb0810ff0c1cf. 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/QM4DW1670695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbfba432ae76aa552c9afcaf5af118da7f46b8a4a844185eaa6cc28ef6d44573. 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/QM4DW1670696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbc5b30a695c41d228f363e701333d11b7ef03ac6faf1cd4a2e67805fcfcdb18. 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/QM4DW1670697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99461e2246783a0b05c8145b1e5bef676f4c281a03d3e8786ae48045bdaffa0a. 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/QM4DW1670698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8571e8157fb3f22e1b544cc13a1b2a97706dc9334ab44149bd718e4ac906a768. 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/QM4DW1670699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8db506356bcdc6b0f3a7f4187174b6034777cf8181632f34df85eb27e949f412. 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/QM4DW1670700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8076caaaa6d5fe9688e5681a3d4d5d704c173643eb8af3c11927e3f252ded018. 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/TR0061900140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x373789da911036ee2aad09e5dcedd66f46af72dced083ed9c2ea9995cfbf5272. 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/TR0061900133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x531215af61d9f2c39fc8c03a5894bea089352171e14d97947f5b36152a9ceca7. 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/TR0061900134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68d690ade0bc2ba3f79391ac2c7845afa037962f901b71d4a4a318729651e259. 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/TR0061900004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4332ae7ec5cbc5acc99a81e23f52cdc1b8af7325e0e4891ad13c2ce49847027. 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/TR0061900141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa35a9d2c268794863c385ae12c6d2d4712e6eca0fd19e412484a0d14119f0c94. 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/TR0061900137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x712bf49344913e73567edc8fcb5d52053caf81d656969f51067160263c0691cd. 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/TR0061900139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97ae4207848fd6b4987d93a763620c13a6138861dfcd2ab9715dd3c03a1f3442. 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/TR0061900138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4beddb8e65dd26ddc6962f7807de048871a980ce5ae4623cea4a5b2161dbd389. 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/TR0061900135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb65eb5b0592af374729c31cefb50454b6b6e9d296cac848a05bcfd26501d7049. 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/TR0061900136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde845d784cc7de6ac0b32931fae194beb762458e043201a8438c3797ed13fe90. 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/TR0061800302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd2298ab857044dbabda1e4d542aa4712baae22a9a062d3ac93a4b6bed86d366. 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/TR0061900142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11923e514ffdf78044f876f33647bf440a1bf117fc9a51ca1b36936832b199da. 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/QMBZ92076479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa903be7d8af7d1f47d7a1fe38bb3f16c02a8aadb1c0c6be836a9942849614118. 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/QM6N22137013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa903be7d8af7d1f47d7a1fe38bb3f16c02a8aadb1c0c6be836a9942849614118. 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/QM6N22137013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a16516f1cabdf80dacf2358771db95db46c9dfd6996a7ed552b48768dd015e8. 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/QM6N22175578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5149e9c3e61e314478a6e6b8ca86250f61d5d8463ef3a89cce28144f22f9f218. 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/QM6N22175602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x375bcb9b29649ec6141c5bacfcd1b0b675ee922ead25c0b9230b505192b632be. 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/QM6N22175612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86b9bb8b46b017361ec994f7c0cd4418b60d85215896bb0468ba50bff30ce71d. 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/QM6N22175611.