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 0x8a4b67a107fd458358110c5fe8d069ff1e54bdfecab4b14e286706facdd50b41. 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/9c71bf2b-630d-4328-a7e8-fba3a429843f.json and https://artists.proofprofile.net/proofs/artist/9c71bf2b-630d-4328-a7e8-fba3a429843f.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 0x116f614809b8b4b0e9813b1187211b454421abaf8ccee5349d522f4217d720b3. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/GBLLT2029033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05b811fc896bf54425365ed701990f38c001f20f9b07aa8f3d10095cec8b5ac1. 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/GBLLT2029040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23f9c04046b5b534a7209c9596f9149532e69e4f420a2524084f415f5de3480b. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/GBLLT2102179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb50292e8d3e784723906b26b98569c740db11be0347181ab40b5ef16afb07ad0. 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/GBLLT2102182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c546372a7259f47913d99351f440944caae532c5ebea314b927cef43350675d. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/GBLLT2102185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d1ba8a6c3682402026ece64083b732193e34b3139b8c2dbcad41fae23693539. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/GBLLT2102186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x667f9cc185dde4f8400a85265e805e98702cba017a451d165285a16dd07fc8f7. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:44:37Z), 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/GBLLT2108879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf03f1e00c22532178e349296ce0f5be4fc4f6589ecb2eec365da554dc520139. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/GBLLT2108886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa67c33adc7ef5ff046212c1ce73547e964ad7f92fa45332cc9e133a03f49ce37. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/GBLLT2148790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91811605f2c17220b566f1e9206e984b762a6f69d303d76e3e1a4b3f372734bf. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/GBLLT2148791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb54bd8c8980e9b23af688552482e27ca62e8e65bae326e81f00a2cfe6bb3513c. 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/GBLLT2148796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfff38df06f06116e4673c63643be8e5f691abc3b6f28d81fd4c301d480c355a8. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:00:18Z), 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/GBLLT2154768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb93ef030bd061bf8edd541aa7bd252bf529d58871751035178be216679aa825. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/GBLLT2154771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd3de5759b158916b7edf72b9bffaafa421bbefbf9240660ee01a8f7bedb690c. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:15:11Z), 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/GBLLT2154774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc49c93e6e992e775c511f15993450b1f92e2a780f9104d180b4b669333fcc45a. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T04:59:09Z), 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/GBLLT2206667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb65ee5222621c26f375fe48bcc79171f9fd9e199101ee83bd79117be741514d. 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/GBLLT2206672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9227533b600631362c2192d2d0991e8aeda849826d4627800c847f20f11813c9. 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/GBLLT2217677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed6d814b1f70d76321593e87c3b9417945179c747117196ead9056764bb89c70. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/GBLLT2329783.