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 0x7c31ce398fde890fcfabc1d2fceddd192dec68616987478989748d350ed18984. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/faa4f338-268d-43a7-a21f-db1d756847e6.json and https://artists.proofprofile.net/proofs/artist/faa4f338-268d-43a7-a21f-db1d756847e6.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 0x7276f01a7720d78fe2839fce821372f277f367449dc504a81b484e8d2d2d937e. 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/QZHN62311557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12e8f22b05cc10acaaef08ef461afefa09691cf3ef2accee05770bd03dc7388b. 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/QZHN62311558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ca3d797b739f412a289f1d8a1a6bcd45aa6084285cd905e2968c4dba0a4765a. 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/QZHN62311559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc722929a60df857ddc429b5e48e07100c51bfdd0d5813353d2ede99f23294623. 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/QZHN62311560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa12ede8b17d63d4906f926b0bcb29ab4c31b3402142c245d98bdba506812e84. 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/QZHN62311561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5ee1e94999c540cbe19fe95a74e3c3ae46470445a428664ebfa157479a1187b. 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/QZHN62311562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9903f072566558ebf25926d696395649cb696a52a748d5fba0fd41d0ffc4d5cb. 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/QZHN62311563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacbf517cc0d5e17cc7a688fe9fb8dc6ad4acd012e2279d62ac1e0d1dbde8651a. 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/QZHN62311564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3a41702ddac6c2100790ef814b4d43e74cb89f8db50fc9ffe613cf5e58904d9. 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/QZHN62311565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafc91a21d4b891c33bbcd950fa570403e741a358595e7fabf585f22cdb9442a0. 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/QZHN62311566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57e335b11ed08875f5a515ce39b2f572cdcef012e3c99159edfd41b2383fd2e2. 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/QZHN62311567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e44b7859256cf01e5f2d2ecd91e91dd133a269f0b2e2076826f22d2b4eb50d1. 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/QZHN62311568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc941ac064fcbe58e7c3dc2034c29aa09b687ab784bb8d90d00871e6534f161d5. 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/QZHN62311569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16c916815b4b614306486d97f8631e3287ab53628d3df761a8de2abfb77ed5e4. 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/QZDA52551619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b99c2d33c5f4d703dfee4312c43fd59878be3ca0a7f85da808c3dae399fce95. 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/QZDA52551620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0a9095ad064b3a66aca5b2aadad39ee6cf2b0a71040e37fd210a82db94b6ccc. 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/QZDA52551621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60b11acd6bd193ef0e0a16b01d82bfe31de291e860495627be535f9e61eaf5c5. 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/QZDA52551622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfca297e123369ca57fac6e8802f465186eb1d8aa1a63fbee6e4d5ac1d9773ece. 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/QZDA52551623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e1d412ef887e7696cdf7df278918517f25ee2cf5ba9d1e7b3a52d590f495337. 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/QZDA52551624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bb310138c5555ba23ddaa08d8da69c76ea0aa3b6a12932afcab4700085959b1. 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/QZDA52551625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38123080bca1c92603aeabaea287c1bf63189489ff07e48190a9e3400a10f81c. 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/QZDA52551626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf241191ea0dbc8cd2023bec618a62cd9db9c5f25d0b5cfa2e7b6892ca0f67264. 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/QZWFT2496600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb1abef734cf641f067c6eb117ef6ca50b0e61c857731070e8f6fe08376cb532. 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/QZWFT2496601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c9d472f6ad31fdf3012f6a44bd0fb5c02dc558d2788575d1124d9595fa9077a. 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/QZWFT2496602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe88c8b41e3dfd9742575a0dd1f6b129358b0248e02a455e1b6a7b9067831be48. 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/QZWFT2496603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1fb6eb56aab51e3ae5db64de6b5ef6d39034b0af00c99320dc10f06cd2be6db. 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/QZWFT2496604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ef89ace8e434a63a3b0c18d0921181ea33f9d8e2d06e2843c0a74d0ae34b5b4. 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/QZWFT2496605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdf546ae87a8bf310940d14b371ee9686b326f360db4a0a00c988d595afded0c. 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/QZWFT2496606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec31f30f669f066580022a327e6f83e39bbaf38fab19c8341a80fa24cd49a828. 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/QZWFT2496607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x157ad404fb6ec33787da9d45685a1bda9a247406334d5078b7cc6e86d3504605. 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/QZHN92328226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4504f34a4aeac69cc67953d01eda0ebb88628f9e980ba1de6f10354b4d4d96ef. 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/QZFZ62593713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55487f291ec14044b756f2d1fe4ddd93c3721974ee578c46bd9f1892374d828e. 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/QZZ7Q2426837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4504f34a4aeac69cc67953d01eda0ebb88628f9e980ba1de6f10354b4d4d96ef. 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/QZFZ62593713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55487f291ec14044b756f2d1fe4ddd93c3721974ee578c46bd9f1892374d828e. 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/QZZ7Q2426837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1af7a55335f447415f12db8d8cdb644ca59b7e7e4770daeb3019e26d47e0dc3d. 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/QZFZ42557794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe95f3a94eda46b522dbfec809ca887eb1dbd48a493247783b67e2f702d2d9809. 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/QZFZ42557795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1f5ec27f2b895d5f421f6c60617d9a2c729ab2ab98253ca6cd0e5faa75e9aab. 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/QZFZ42557796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55487f291ec14044b756f2d1fe4ddd93c3721974ee578c46bd9f1892374d828e. 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/QZZ7Q2426837.