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 0xd520a1f865fbbfc6e050ccbb1daa6d9383884c3a274b1cfac80e86d23c8f7db3. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9782611d-6246-44fb-8546-ee091626a4d2.json and https://artists.proofprofile.net/proofs/artist/9782611d-6246-44fb-8546-ee091626a4d2.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 0xbbed009b565cea8deda08c60be43086e2186abd779343b769c2034ff45b45843. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/BGA261575919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1c53d94c492eb56411087202c1774e70f755928d26504f8df2c4b6bbe59c1f8. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/BGA261575939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e6273b9e75f947a220180028e78976cbaf91a94d7dbd374ab603e7dcd4159e0. 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/BGA261575947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b771e7da4e7dd105c7e195a7bcbe04d1555706d41282167df906fb5dcfef703. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/BGA261575952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40c20f0d51ac8cb73b6d9df25895e9686c6fe9c04537da6d254eef08c702d4b6. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:20:52Z), 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/BGA261575956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x837500d27689444a8fcbe171daa4e4d1c4f1dc8f63c2ea9cac092c74c2a4fdae. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:47:44Z), 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/BGA261575959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc57441543f08aa4b4ba282a09b0284e6a4cbf2ba69b6d83f6968f1357b7ad02c. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/BGA261575965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40b3cec68ab51c7e3c60d7bbde1cf12488c39e87a2294ab069a1ee3b2dbd07c4. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:00:44Z), 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/BGA261575977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2af0a2017fa23b54716d293ec1f23858820384641d5c3eb54df891d4fac3e715. Chain 2 (Bitcoin): anchored in block 958325 (2026-07-16T23:40:15Z), 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/BGA261575894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc305e352d4cccc8e80869d99de3a54462cfb7faf5afb8c83cad68ccec65e125c. 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/BGA261575990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08a4bec8166e041d776fdae50ed51a50ea77f9f27f0726c009fc2a8c499ef4ab. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/BGA261576001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa742e2f2369a3c93170ed868b5cbd29e212687654797265f6cb64c7e50ff771c. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T14:54:40Z), 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/BGA261576031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe35fcf23c447c98f7d2f7f9ef75b9f15caa6c19d9058c904730d004f2c8b2aed. 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/BGA261576032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa035eef0ddd51cd91e3e7daef1550348e34ff3f7f6eb0ef31ca55300babbbf9e. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/BGA261576033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ccf8ca1ac0162a15e31cdfbb217ed3fd1ca0613ae6938a73aad56b4fadaa2ab. 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/BGA261576034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0758eb18e1f79181b5bfa533f123e0db0a3206cddc74ee276eaa74fc2d0fd50a. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/BGA261576035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f7991b154ba0a68e51f537124bb2d566ddba5ce0aa4500d3e7350e70d151265. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/BGA261576038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0b131ae6e61b06d5245457323e490a2da9e89bc2412a728851e71b640acddd8. 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/BGA261576010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf0bba90f1ec45d37121df395f40dae231c55dec9b92126856858f5d85900f86. Chain 2 (Bitcoin): anchored in block 958368 (2026-07-17T05:03:25Z), 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/BGA261576012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfba2dd067ad673def3adc81cb26a638a877c7e216eab2df84aaa9a6dbd65ccae. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:23:58Z), 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/BGA261576048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd722404064d5b5b6db76031ccd07db42fd899797905a254dac7e5031f6872e9e. 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/BGA261576049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebf51c476b70f59044be5274b55ababe498934bb386ef0cffa4188bc13d7271e. 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/BGA261576057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89a4f054a4cea81ed2e9e4b169923522fc8ecd44ccf50fe52a923cff326775d1. 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/BGA261576058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16eae6c537de9891d3a82b1c7f3ad31a42b47a356126cac6209d636845bc5ae7. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/BGA261579574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb293e8bbf6f100f8fc5c6e740ce4f99d7691dc7d30ac49bcd809d68af235e9e6. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/BGA261580976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b52dd4f7a103beeab48cd6ce46165e938a3beba39c00a09a13e9f646437da94. 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/BGA261582285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6db58923a8a76e6a1b6ec7cc3039ff64a57838a92a147ea57a78200e9a181f55. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T15:25:37Z), 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/BGA261583070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb5b10ea1e3a0ff09100e92f8c03943a9ae0c843d41038e33f2c12fde246c29b. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/BGA261583222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd89af66828f7f6c8bcd9a5d2712f8ae49efbf7e345f9e58b8564788f5dd87ccd. 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/BGA261583877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba3f95f9e0bf9d113e66fb90fe8da9ac9c5132b6c13e89b0fd5efb78d7bfea5d. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/BGA262478201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25b7b6a737c8ee0c71f478374735563a595610a57895e1bd52c6b263898eb91e. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/BGA261584771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7653cb640ebf052229735ec16f27cb4bfa21ea1cf07862e6383015904081cea6. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/BGA261584772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcaac8eb925bb048c9c6330a9c9b956d512354c7fb329158c2092c05f52cfa9d. 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/BGA261585015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4eec92a9a1be6de7a5e2f5b641f416de8a6b0d06f3576b39ae2a94e02500598b. 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/BGA261585014.