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 0xac33d55501d9bdbbda903646dd677ac670255fe42a2deca741ad7e729495bbfb. 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/6265526a-4595-4eb9-98a4-cabdc9d02b0e.json and https://artists.proofprofile.net/proofs/artist/6265526a-4595-4eb9-98a4-cabdc9d02b0e.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 0x12957b548547cd2a2920fb9d519e61b2dddeb1580d769b394c23c4d078852d78. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/QM4DW1863630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x381dc84dad90b739e54920664c853763722fef6e7b1f3c98a6a485141c9d8490. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/QM4DW1860942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54b73531cd467f960dc31ec40f3774526d94fef10703f186cacb5b0feddeb3d8. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/QM4DW1860943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7534396c4e0faa669083e656899b7abc534f57e806166518cb655bac87870204. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QM4DW1860945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd12dc0eb9c92319a3e29d995f09590c329dbf45eac732ff362272f86130e0e3e. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/QZES71816181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2f66fe313ab6d33245a96983b6f45daecac574a82a380cf67d3e3004c5856f2. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZES71816182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb52fd3940dc964d2e5250e34ff8f4c40074d8c96d031b6aab0b9c26a30a3a7b. Chain 2 (Bitcoin): anchored in block 957751 (2026-07-12T20:41:42Z), 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/QZES71816186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf38b181839cdb6f668d4ff2723efc46d3e24fcc164a91e20d3eacb1416cd1e41. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZES71816187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c8a954207c7399278b99b1d51e854928a807ccb01ece0b6ab4c7ee25f169363. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/QZES71816188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdb36043c850c53a776e37a2ed8c422f2b7cf10bcd2ee66948be578fa6b1a4f7. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/QZES71816189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54bef3bf62656e7e159cfe2e469a6aa6f354f7ca8eb53cf305b659feff2d5ca1. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:25:27Z), 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/QZFZ52061301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bcbd806b40c6f9fa2b25bc93c2d3f95a1cf6913e7423b11b5a66bc8abff4805. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/FR96X2224169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7e11e551d61f3c005104465f18f349b4eddd35ca9b049a61a30411dddbfef7c. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/DGA062496919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1f44ce38cbc0a255740768ac42cdf3a019f3d6bc1e83bb1da3499a04991c6da. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/DGA0M2493118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dab1d224f97cf0de6ab27dee5ad32cb8a52a7b3db1d4439ba2a8049ca142651. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/DGA0M2493119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78c4bbcf5df7e3dda27d603443aa57814518a68b14dbbf8a5bdec2feb724824d. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/DGA082470143.
Những Đứa Trẻ / Lit Marley (Live at 13 Studio)