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 0x0c4d951b996f67f0c7386bfe7b7e6c4515b2b7e9c103e82c603622660c683e5a. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a92c34b8-731c-4858-982b-aa0466c56cf6.json and https://artists.proofprofile.net/proofs/artist/a92c34b8-731c-4858-982b-aa0466c56cf6.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 0x210c1a48a44bc35f7cc20f798d47ebc83c6793c8d35dccab689ae827be294579. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/USHM22471472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6ec8f752806e961136492f25281b5488ab3c0b634d1a6b8fd728a86d8ede179. 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/USHM22471474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd002791f9dec03f82d736469b6be099c5546fd8e6a0fa844ed46043c61af6992. 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/QZVEM1870912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fd0e39b030c2b38a110f6c395447827329b0e4fe287656cc4848f98e3e49718. 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/QZVEM1870913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06f5270e0a19c0b9b43beedac014ffc10267d911340f3d1197b3bad42ade3025. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZVEM1870916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61c2dba87ca571927854c65b12a942d588c6f546660ecb40cd3c4664273cea89. 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/QZVEM1882803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7efc6c9cd714782a00c7b5d701784aca55f673d5f4b67442b4c519ee7e2f638. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZVEM1882804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6558895bb31855b827487573ed6d202d734641857fe4be0731964fd711a1218. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/QZVEM1882805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3750ea1634b7cf7b43f043c196c7fd3b2209a477585630d444139214b46a5e85. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:46:55Z), 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/QZVEM1882813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b2eb4b5b213700c546378bbca2c7750c4395e8e32f940bedab7ea91f633ee47. 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/QZVEM1870868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15b7813be725f69233829e4d29b9fbae6a5ba1fb2cfeb9a0cf8205f3f9b2efd0. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:47:24Z), 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/QZVEM1870869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb19463b5c80680f1f8222bd97a4ed9b3493ea6e14a781ac8dfe9352e230cb42. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZVEM1870872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c1f7c48a3d2786660e082952c88bddd9f0b6a4653f15b97a31f8ddb9c5def9e. 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/QZVEM1870854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c2aecf534a2ffc77f2ed04f13fe5a8b1dccce6e30050cf33cf7af6914f2f5e6. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:32:35Z), 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/QZPEW2517940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b522e0a80be5334eacfbb08b0c06ac7aca8fa9fae2c673f5568f95e0da8f97e. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/QT2VB2506050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x698a2f64cb9a7f0059730dc500ef06e1eec38da2c5af775bb0f87f311b489ad2. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/QT2VB2506051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b7e227b171951f863b152ff1c866939397fac20a188f18a4add57a174eaa7ad. 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/QT2VB2506053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd72e32884cdc7b45a0d8c68d4cfadcf524ac7a900e8bb06f2c1ad5aeeed8781. Chain 2 (Bitcoin): anchored in block 959015 (2026-07-21T16:25:49Z), 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/QT2VB2506054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b3f38148678a790bb3f900b87fa1bdfdb99f86f1ff312d891babd9cdc29eba4. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/QZVEM2521791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4662bb447f6907ea8eccab1aec87479baad7ba6fc9cbc05cf5b50e373807216b. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/QT4K32563014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8925376b9aec775c3911353252fee605dcb697e31a8c7abc2265ecf9424be50. 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/QT4K32563015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebf2629559fb770ca94f8c2ac7f9fe8f46db401c62877e7691d4b1cf87acfd62. 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/QT4K32563018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd4cb580ccc06b5379cdd93b6f468562bad3cbdc79f589c8b616e939cb2d3780. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T04:48:38Z), 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/QT4K52513510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd68b190cb6afa27152c1d9c79c2a492843cf6142995bbaf3546c3a5ae3a91367. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/QT4K52513511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3869013174cc284df491974abe0c8951e1db9ed3b2c9933db0a77159ffdb16a2. 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/QT4K52513514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe491c595a199538979cac58787b0adb69e61240666c1362bf3b832fed563029a. 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/QT4K52513515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x381afc0820e78a3f0fbb44bbca4a665ed77d549c71786fcd08217539fd7685d8. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:48:20Z), 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/QT4K52513517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5de7c096fed3ecf0cbca7792212594110ef98aa9b62a7129d7b61e3787554a9. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/QT4K52513518.