1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x0c392ce819cad8f66d97a4ece866d8af06460ed323c0a952b0c9722b41eb2712. 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/056b9fbf-7624-46a0-8427-c98562f95c10.json and https://artists.proofprofile.net/proofs/artist/056b9fbf-7624-46a0-8427-c98562f95c10.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 → block OTSBitcoinBlock must exist at that height 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 0xa1fd50aa2c433801c31e92394071a13e6d11f8e3e4b78351112b2e53658ce294. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZK6G2367673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffb865b3405e24cf78e48dc87cf22103d91e07220beb6f0f09a7b5e38f7f107b. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/QZWFK2319656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e58237c3d773701a9c864114139692b26e58bcd780effbfc97a2c3d7dfff63f. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/QZFZ22469339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x540678297964726dbaffddea999cf90b5d6b58e1df815c12aceeaae3b59eba22. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZWFP2430157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11164d10bceb2e2bf4a234f8b81151f236bdea22a5c3b50d96bab812e645f173. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZZ762446132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00df716154ec7f10e105d100f935977250e766133ea119bc743ecb3a60e45458. 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/QZZ7U2437931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0580aa72f9107239ae17a6fa45a2cf44a99ee26d47e8fb80a269975d36f5dad6. 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/QZZ7U2437934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd422fc22519f5a4f376f5c30b4f7045cec1c8fb37fb0b78a7b2bf231afbfbbe0. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZZ7U2437935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7857cf90b34e3309b61519ad475d4f6bd0382484375bb2dccccb3df08dc33208. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZFZ42548369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fe44a9a3579e6cf7212be9e1a84ccce3af2297b54bcb9e95ca98175084e38f4. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZHN32525777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x579d1dfa6946f07de2499ccc3ed6ad2fee41cf8f4d504d3938def519870c9897. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:20:25Z), 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/QZHN32525774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a9038de6aa8b3bd33baef711147b5b592d9b66ac1673ec92c8a2f6c2840615c. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/QZHN32525775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27777acafa58fb3a888b38fb0d990b853beb2df1cc4e54542bd5feb41a570869. 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/QZHN32525776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1dd141f51750ab0a06c02a554fd469f0ec3b580c9796569ed0af2001110b921. 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/QZHN32525778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec544996ff6416eb3f1bdb0b10a6954c1eb21cb0fd97fce8a9944984efb01f17. Chain 2 (Bitcoin): anchored in block 958104 (2026-07-15T05:34:05Z), 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/QZK6L2500730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52cb77edb3eeda32b1aa00f1ff15b1b8c4751173a4c0a832dd5a074119e40473. 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/QZK6L2500732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc693a560f550c6869cf718ea767607db6639fa8f935bf04043439984e6e4507b. 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/QZK6L2500733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0239fab2bbb9006a9bab4c9676a88b9267101e7b71cd89dbcca5a495bf188073. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/QZNWW2525130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x467dc063ff56052cdf80c380c0462ab7f2458add73a94aae39639368a63df9bd. Chain 2 (Bitcoin): anchored in block 958106 (2026-07-15T05:35:13Z), 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/QZTAX2533319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x148fa808ff761ef28aa4d3a539971b09dc742d2105dff1d877d43ca544803881. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZTBD2574273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe568cbffd6909468fb7c38924e3a7d7db75ed93e34cfc80278808aa8a02be6f0. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZWFS2528252.