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 0x5bf4bc21540a207fd8ddd608eff9dece63270fef75b551707f51d0f1b759e315. 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/c7b194c9-bb3c-40a4-adbe-1e513de5ec3d.json and https://artists.proofprofile.net/proofs/artist/c7b194c9-bb3c-40a4-adbe-1e513de5ec3d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Piano Tourist. Volume 1: Solo piano fragments
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 0xcaf048d334408e2fd1d74300abbe53dfac02f7172e5c42d967c3072eacdaae1b. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-21T21:35:54Z), 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/SEYOK2306564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x291a4b1ade4ebc747c3c0b36b538a2020e2287d87ae256e616651b2e50d45650. 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/SEYOK2306563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e8fdcc25dee370d2030e742ee1ffc6e1ef11bfbf05d1d4f2f0335fc87a398ee. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/SEYOK2306567.
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 0x90fc23ec48bdf4df9b4782dc96d2ee1a63bdd6a89f447e592d20c50c78b40096. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/SEYOK2306562.
Isolation (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8c32ed65f9527cae470bae20c11c2c913bc43b815d54d2809302e124d47c6cf. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/SEYOK2304216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80746cc2661d993742968c5752fef9d3db6cb59bba2efd7eeb379faca68e7f4e. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/SEYOK2304208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09c9577ae0b56e60f4e25e0dadeaabfd298b43016719decc9fc1ecbce294e660. 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/SEYOK2304211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5da2c30cd53c01827f6fe85ae2aeb6db2f6d70623be78f56bd55e8dc583ef6ea. 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/SEYOK2304213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a8b384ee8a7003a89a49fc23ce9bd64c3e33d65189446adcbb690aef3fa6401. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/SEYOK2304214.
Sveket (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ac0e11a7fca439766d59e028ff400f403b33511b6373f1185193ce99ae2cabc. 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/SEYOK2040129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5617310f15e8e9aa55c2e878e204806df8a59812c0ddf047f138a94f2ca8bb0b. 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/SEYOK2040130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x676fa30e24721273a14d99f01a6a9405734594f4d0b91fdca74eacbda1c86527. 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/SEYOK2040131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9da9b22dbb1de0081c5fa3accc9b668e2646e8f4d435edc326b6059017c23d18. 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/SEYOK2040132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x676e433ad2c3bb515893aeebf7f8e3f019cb1e86ee8a0db44a8dad48f6d631f9. 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/SEYOK2040133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3d136d7a5e69f4e7e3064250fd00fdc5d8f7d91a7e957c671313aa4d3a44bce. 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/SEYOK2040134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabb94c5cc84c12128c2dda2aab4cd552552e9d4dcfdf67c3f18dbcbe2ce09cba. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/SEYOK2040135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a84df6b78fb7b7dc06d1227e34d44986ab9e9eef8a5226e8966e14c7da95882. 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/SEYOK2040138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9374ac265d46653db52e74681164c3b06e7122a76af7611a4e5ea67e9ba493f. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/SEYOK2040136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd00e362cab8001dacf796cec5f63a190156c971584826517350a6923071adbbe. Chain 2 (Bitcoin): anchored in block 960106 (2026-07-29T12:41:21Z), 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/SEYOK2040137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7256681d87f47eec6d6c58bf0c2c1829e3a44b8de6f6ef923dfd1ab552e52590. 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/SEYOK2310104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfcbc578f768638ae67963fa0acb355baa3abb9ec928241192f91f3828e6857d. 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/SEYOK2504157.