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 0x23145e68b76b6fb6f7ddcb77bd79ef2c8fc4e14a3801f8b3ee221c8b8ce6a74b. Chain 2 (Bitcoin): anchored in block 953660 (2026-06-14T17:20:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5426f22c-c6a9-41fd-b7f5-0b1c22ead27f.json and https://artists.proofprofile.net/proofs/artist/5426f22c-c6a9-41fd-b7f5-0b1c22ead27f.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 0x58ed8e165602b50a7e1d9a5267d45bf60fc0107ff9974695b12d56aac77a9bb4. 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/US3X59700901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ee869899c2a6242632a36813f66b173e27cb71a234eb9d59676a15da4f182e4. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/US3X59700902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99a0bea298711e9c1f84e6b66d25b76f6d12fc11635549997effc23b93aa99aa. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/US3X59700903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x931df25f649b1d48b3a550c4583a2016278c1236407c24ca31b7f9180534030b. 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/US3X59700904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77c8b44ea0ef24a8be5d04cd5e592bd724ff708814f3c122f41a8934fff18e01. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/US3X59700905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d9f7eea8e38fa62383e9cf32e693a6e9851c96b3ff8947e2a1cb160fc2180da. 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/US3X59700906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x447233720b59724354acf05662c3fe37a75399c10fdb2bf303b4a4c073ff6549. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/US3X59700907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x610e0e39ea1de8a67f275852232e341d1b0d848637bdad0e5ee833896c4b02a4. 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/US3X59700908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cce3c35e6d7e89a5a59544efd18e08e499af64486a94fb3a76415ca34e121e0. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/US3X59700909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43a97d06cebec747aca805f85b154e9340dcc22f2c2da085af6ee13a78e5f419. 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/US3X59700910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77dafe7059e3e28ab8effee8452fd233b4b32f0af38cd4ca9be1371066be231f. 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/US3X59700911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cffc20532f1e94a68a7cc22c2ca827627c610a36ed0863d79eca467c912ce80. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/US3X59700912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bf99b04fea86518dd51fa0d6e8689ef56cac3b5244920c290813e0fbe0ce234. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/QZK6P2087031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb71ebd52d1538a856fa3456f11f24cc1c9eb06a66a6b52ad763f127f67b3867. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), 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/QZK6P2087032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ae8d0022c4fc7591ff566028e9366661e6f98c27d49d1c38b766ef97e25a7d7. 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/QZK6P2087033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2becbd7b1a16770077437be6ed74b4611e5e16a2bfb9fd5eb7abe191968575b6. 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/QZK6P2087034.
Ghost Part i (The Figure Brushed in White)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7d2df7b740e75c0e9b7c1e2bdf67a41fa6642b92ff3099ab463bfcc8fdd055f. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/QZK6P2087035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadb6418a72dcf87ef65d49583ac9e2f1d67834ea82d77526cf8415a1b54ec2bf. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/QZK6P2087037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce7846c4918da61aa4fbdda60f2a609d404b50b30698400305786d5c4fc9c36f. 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/QZK6P2087038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x365bcc5b86b72d30712ec966ece5e90ff4481853995e826fe53e292c449fb3e3. Chain 2 (Bitcoin): anchored in block 960125 (2026-07-29T15:38:18Z), 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/QZK6P2087039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5a4b516e1576f7189434e47806f6864a01191e8ca0abf1b8d48e56e43a7eaf4. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/QZK6P2087040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53eea7425c6bd7de482d14a865a87d0f677a4cf1f83d2d47e13446e59ed5a29a. 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/QZK6P2087041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5942798569cf6d1f83e3926a1185358258c58f5777ad941096e52a8955bed5e7. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/QZK6P2087042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae9860c3c0ac26314f9f781ae0c36f8773f046c3917c848f28e39a906ae67c5d. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/QZK6P2087043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3c1c93a36712973a02e2813344b84515669aacd27658465c0058cc9aec956cd. 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/GBPSR0900214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ff809e496a2aa55733349cb34152496ed12aeb2fb733a08a5dfff1966050c20. 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/QZES51978331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9135d3efb3e7aa81b7f1a5d746c3d7da996e4cff818c99a2ede77afb78b44b9b. 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/QZES51978332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d2089508ec2709c398dbade765932824716c1d5b1dae51b2c1e97e400a88d00. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/QZES51978333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21b021c800e6627158488c1202ed0e2cba1a590b4b2a3283c6dc4b861ad79efc. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/QZES51978334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d9f7eea8e38fa62383e9cf32e693a6e9851c96b3ff8947e2a1cb160fc2180da. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/US3X59700906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7ce638a274e786286b03ab326e5963f008b061facfa6b05109ab2133d5d983c. 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/QZHNB2050268.