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 0xfc9b8e293d201bb8e802fd8c7c3b5e626fedfe65cee1af3425849b7e0f4abccd. 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/4b7af696-2d0b-4ac4-b9b1-e484a04bc6bf.json and https://artists.proofprofile.net/proofs/artist/4b7af696-2d0b-4ac4-b9b1-e484a04bc6bf.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 0x09538d097a248b8396a9f59ca486b81cb4ad1b6703d0c55f38f29e87b3f9eb2d. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/ATEK02299115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x532ec99017287156ba3464ed058af64190bef895752ebed58ce4b12210555dae. Chain 2 (Bitcoin): anchored in block 958554 (2026-07-18T13:17:01Z), 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/ATEK02399011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x458d9516e90afeb57441974a01cbd5ee2955a8870e1a3b1d0cacda9334ec7508. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/ATEK02399012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55b934c78c1002da988efb2efe01db76a6ba165613495d2620ea0adf9290546e. 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/ATEK02399017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29cab01c206b5820c44638691fd485b54f26e4e77427c1a865eb14082a32576c. 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/ATEK02399018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb5081c70e7c0e1aa676413b1c65d895558538b5af7517f6dfd31e0b79ffd529. 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/ATEK02399019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd629953d5ba9ba5fa4905fc1dbf81a9c0c009d63f2f02033eef4faa27b63b936. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:50:55Z), 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/ATEK02399020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x265506bc5cc3255ff567aa77505271b5bf4c1cff30efc0300e68323e36be7aa9. 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/ATEK02399021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc26ec280bf5355e186cd5718e99fbfe9a93a26768f04238cf10b03e9b9bdd333. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T04:41:23Z), 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/ATEK02399009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd44e0afb18b116d2645c57e38eb11edcb45bbd90286b03fc1379b11daa4b3fac. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T02:49:44Z), 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/ATEK02399036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00698b81625a7aa0a81491518a235edeaf878a3f4c059b111e1f0b6121bd281e. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/ATEK02399041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ab9320b0815e28e191a0f608b57fde8972df70e34754cccee56597e753930fe. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/ATEK02399043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe99a94721694a6963dd01112efc0e04695c2f0d19daac9e3f388c0c698a4b00f. 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/QZTB32411773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f311a4c033efc5d4209112e8dcf555bd53b96b96f7b202af2ef268e277dd358. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZTB92454396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd6cf1e3839e59e734c575362fcb0c676ca1583d52cfae371e237120d56e33ab. Chain 2 (Bitcoin): anchored in block 957565 (2026-07-11T12:18:39Z), 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/USX9P2465105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc74a622a97d2a18ad4515ab709d8071768c698471f128bff24c8309112107709. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/CAHQJ2593871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ab2cb269277b2cd2c6d4ef29ee731cd2cfe5b722452fbb8989e8e191a626d9f. Chain 2 (Bitcoin): anchored in block 956425 (2026-07-03T01:28:11Z), 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/CAHQJ2593874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7aca57aed079d34da812f05fafeef6c324b35c1b90ac5c05ab246229480114f. 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/CAHQJ2593875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74077652effddcd2121a8b76ead70474add289fc18fd196a8b79a45a201c970a. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZDA62536046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b95481bd59e217b217c0f92d07f145b17c63a5b91176727c4bea1e10bd04bb2. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/CAHQJ2593877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedfeb21d03d238312f8d7991db4cedcc3e519e04a0a653c4a90dd7c2f68594ba. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/CAHQJ2593879.