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 0x83b4a3d49004f3e7d33525c5fa65f2d9acb3ea9d8d2dae7fbc778c3c36012ab4. 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/5f69e86e-db3d-4a1f-8dc1-e833a4ca9bdf.json and https://artists.proofprofile.net/proofs/artist/5f69e86e-db3d-4a1f-8dc1-e833a4ca9bdf.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 0xa2ff3e897b20f81d8ff1b5d96db649e90bf4e36bf47c989c6c118e416d2dab72. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/CLKT21901788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45f0db1f69d18b40a2df71a74b13d713554e7000e2326d154d959b183a3c6516. 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/CLKT21901897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2ff3e897b20f81d8ff1b5d96db649e90bf4e36bf47c989c6c118e416d2dab72. 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/CLKT21901788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9d9ad748a0b08302276439df1b29d466a53b6816548443619fcac74d30c65ea. 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/CLKT21901900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe5259aae3788a859042621f1f50efc92e6c958d4c0fb1d0e2d979fb3b41cd7f. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/CLKT22003396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe44f9774584c6099d8a6f5e0af1373f1128854cacc7ae53072b4bf3d7052f83. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/QZHN52105364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb70664c8cc8bce48170c26f7c94284030eee429746ba2d5d2abfec5f445356d. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:24:39Z), 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/QMDA62243221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x448f9d4266a2fbba89f77a09da3ae05fc5fd99b925d08ab9a6d14ae18a9e09fc. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/QMDA62243234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb24401d7350c6164dfbccbff28190ddd8cae95a96ecfe7bc285a0c707a581702. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T10:49:06Z), 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/QMDA62243237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x049581404026902582bc7ab28523d7bad78eb138084a6936f2e40c557900572b. Chain 2 (Bitcoin): anchored in block 957965 (2026-07-14T07:07:52Z), 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/QMDA62243240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fc0045c490fdeb293ebfd2db254d98d36129c65fe5a37fbe67581a4f505e7a8. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:14:21Z), 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/QMDA62243226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x721393599070d90213acf795736e2de10ceb4c7306cd9ad5e0ba2a302ff9e681. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:52:25Z), 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/QMDA62243227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9efcc55e9785387d7624eec34d1cb24b80a8642bad6cf21620f5fd85d93f658. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QMDA62243228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb553037a13e68c177f660475b56dd89721738e41b2bac87e95417593e43bb9f. 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/QMDA62243229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac47c65a96c95faf77b4f84ddd538e82a907e48117744d5657d2056a1a5c16fb. Chain 2 (Bitcoin): anchored in block 957583 (2026-07-11T15:53:17Z), 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/QM7282439932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd47c13ad2f2a7ea9c9dbe70c2b56456057f43d6bf85bc0ad011b8bc38551c630. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/QMDA62476259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05ce09b212f25eff9990fc951ad52fe1a225ebc4ca9c051b4e565518a8a2db60. Chain 2 (Bitcoin): anchored in block 958476 (2026-07-18T01:26:56Z), 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/QMDA62476263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf352c273e21b95de9b4f289604294bac9157523986b47470c6689e39735a0f68. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QMDA62476265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb33a870aa34cf1d317f08feabed5863c9f57aa8cd4fcef44abb337fbc01ef8ec. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/QMDA62476266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f4cadcbab30ed78d4cdc10b380f458eac241c3881614c6c8e598e41acb270ae. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/QMDA62476267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93c4a543e6a08cff1185bf0ac5b3f5f0b474eb56afa0eb5c962d0c8bfcee391c. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QMDA62476268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc96590b27a5e7fc351983ea6cbdc29ddcc07ce2abb05a02d1b7fcc87978a83d9. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QMDA62476269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0fb0e02d5b69499c845bea76158507befb3dfb859b5f50eeb1901474d0a4627. Chain 2 (Bitcoin): anchored in block 958668 (2026-07-19T05:16:11Z), 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/QMDA62476273.