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 0xaa61ec679f8e2f9f7c08fe1ebf6bc4940c0cc3af8c600852470b274d6d3415f5. Chain 2 (Bitcoin): anchored in block 953786 (2026-06-15T12:56:12Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d93b3a17-b344-47f6-8ffd-181a02e79bb2.json and https://artists.proofprofile.net/proofs/artist/d93b3a17-b344-47f6-8ffd-181a02e79bb2.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 0x071c3a1cb5a5ae183b775e2343a251e40fb29e97fde410e74006c50f5e1cdd17. 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/USCGJ1980342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a6415f93ff2aae9e44c76996b4efef760a877d5a69bfe88d3dfcdf9bcdda72b. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T02:17:23Z), 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/USCGJ1980343.
One Fine Day (feat. Kimberly Good & Amy Fox)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff7aea474edd3833d2baa1c588331d9717df196525e1791ee587629f6aa5bf9e. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T09:02:10Z), 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/USCGJ1980349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c78de03343726a465629ff357363182fa4321cdf6b3e39bc344ae3c7c4aac2f. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T10:25:50Z), 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/USCGJ1979624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0426bada41d7c96a92ff59b61c5ef445ccee321d052856a4025310691f93a6cc. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T03:20:12Z), 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/USCGJ1992029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c182d0ba092d376201e702981b4e4c436968e3e8691039fc859bc329dac6383. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T08:05:30Z), 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/USCGJ1992034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a709e6da60b2fa934e7750743c30e565ff22471eee26429722a9a87236f1b74. 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/USCGJ1992036.
From Where I Stand (feat. Daryl Petersheim)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x805b09c7ec759c5b8ce1a0fb6e1dfefd28da12c50b61e6c5176a318ed018f94c. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T15:42:14Z), 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/USCGJ1992710.
Aside from Grace (feat. Daryl Petersheim)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56009ab44f9882a551b391533fb292ca78ec15b2c91b2e5afd1dd7e15445e569. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:29:34Z), 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/USCGJ1992712.
If I Could Tell You of His Love (feat. Daryl Petersheim)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26b173e69969f465b1f7375658ec84dc58e6d230b1a94229025f16fa7f5b6322. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T07:51:17Z), 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/USCGJ1992715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3229dfd9c18255d01af8611055c2ba172ef0aeb01637b713f40d31653adacdf. 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/USCGJ1994364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecec919adc9eb5c642471d3a725f6e5d680cae4fe0f51c714ce5acbb28cab152. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/USCGJ1994368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2199f1310f116fa190bbf6307827689a8f64812c527b3fd49e03550f7ee874e2. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/USHM81953774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed76b0c66b397e09169d822f23a8f118b6a27d5f23c46ecdd8c29cd01de6f47c. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/USHM81953780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x343e927de5609421b681619240e23482c5b264cfcca4821940e2d5cd3620dd72. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/USHM81953782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5be643d505cc569f551eed54a2ccb9505746e214fb735a99fca1759936d4f790. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/USHM81953785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa590ec6446e7441da904b13e6d1179dd68957c7325d2e00342bb8c0b80658509. 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/USHM81953786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x612e4d1ec6f26169ccd6f4a589c994432aa32cb508bfd2c3c43f52f33417c689. 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/QT65X2509642.