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 0xd888b2aeafb9ef616d57310f3232d35091fd1c9e6de8da0c1667c72f9541165c. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/eb7a5b48-7baa-45dc-b666-d5f0e3c8c94f.json and https://artists.proofprofile.net/proofs/artist/eb7a5b48-7baa-45dc-b666-d5f0e3c8c94f.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 0xeaff9124890009a83ea8b9dcca334107013a451ee2057db9aba8ea14b828ed2a. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/GBKQU2087836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb34d1095f37e71aeee451b72795a59977d2ab92af95e6e19893c898d5081596. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/GBKQU2087838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c801e26aa317f4fa0463840f6b8a80eca078f82841b126ea69a930f9929c67b. 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/QMDA72127672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5718acd5ba3cff02763d05fca5ec4eaf28a4b24aa612d59bf240f026b98c7f92. 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/QMDA62188578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc15552341f21ee4f8d4801f577f597feec47c3fc296bec48b9008661922924cd. 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/GB7GV2290380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94ea6d299e0417ecb49ca0da2261497edc6d64d8ad99fdfb0bb0b54586372e97. Chain 2 (Bitcoin): anchored in block 958911 (2026-07-20T16:46:31Z), 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/QMBZ92303397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa431c2ee95d9fe79b21732637bdcdc50443f7eda3141ce503e7d33bba8645912. 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/QMFMG2314961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcb4931d6854c408d7268489c005b3f526efb7abb850c8fe9ea1f3c1961ca4ce. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QM6P42481815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae366a2491642f24d377c3fc05f44e74ab55ae714cd29d8576eebbad4cf85e75. 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/DEEC33501613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78d772be2e0782a8e10c42eda035b9dcd5978ed35902aae3f380ea1027dbbf4e. 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/DEEC33501614.
Ithuba - Thakzin Perspective - Radio Edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3492a08cf1b3e5e1f1dfbaeff55eab53369358bd9c0ff7f419b2164f109b0ddb. 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/DEEC33501615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d98e1341012344955ec896b63edcf0984050e42c66627bce4ebf5fbe195bbab. Chain 2 (Bitcoin): anchored in block 958667 (2026-07-19T05:04:54Z), 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/USA2P2461375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99970588f12092b138c760f8d08adf9ddbe75d2837885da8eb54dc57c5465fe0. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USA2P2462335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e6cafb5f96e240f362d3c3a197a498b608b7ad3466eca1c583be020721e0aeb. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/US23A8583130.
The Gospel According To Artwork Sounds Chapter II
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59178d5129773d2cf0f9e528c7ce49fffc156e27c3e492ba24e78fddbf5c1eb3. 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/ZA56E2302131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3e28352320189c8700d7ddaa3019541e0aeee1709bb23d81be8bf4bfe92cfac. 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/DEBE72100867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x720abac107b0a9638d676025512775de59bc678ff17d8927f92a4e69b016141c. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:03:16Z), 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/ZAY361900536.
Horns In The Sun (feat. Mo-T, Brenden Praise & Mörda) [Thakzin Remix]
Weekent Sun Sets (feat. Mo-T) [Horns In The Sun Remix EP]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x112afc0fc5100c49cf5977182196caac8b1412862ea2e702937ff75c2a98d7e8. 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/ZAW742300003.
Horns In The Sun (feat. Mo-T, Brenden Praise & Mörda) [Thakzin Remix] - The Extended Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc178adac9ce3430303dcc91356b6557e34122fcf339dcb9e69bc5bbfee5e2bd. 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/ZAW742300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8db728f647823263fa42ed13974b927bec0d321eefeffb86afb3a358e57c449. 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/ZAE082203225.
Aluku Records Various Compilation SA Edition, Pt. 3
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x367fc513646b00a994320dd018c02d7b7958ea9be8cbb2ba5da58bdc2e2ed48b. 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/GBLV62114827.