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 0x450521b92e3896d8b5485af28e789a78220cbef7c23fa286066b93c3d5869514. 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/9628afa9-2140-4e54-b0ef-659b74a42fcb.json and https://artists.proofprofile.net/proofs/artist/9628afa9-2140-4e54-b0ef-659b74a42fcb.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 0x324a2ec4879e5d3e522188f9ee9704af36146dd60d9f8a8e90e4d3c1195ec2b2. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T15:03:51Z), 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/QZES92248972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf99b6d35043ff5d9732ba5b372e87f9340610dd3a4aa3efda5c4d5bd036dda0b. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/QZTB82229877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe96a6cbd34c31734593152e316086c3ae7e7080c8519b1c9fb35af46a760de71. 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/QZLBC2337615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd2a464ead07ed4c744c9e312b086f3d45c5e01368ea932ad3b5562722637c04. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/QZLBC2400327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f344a8e459e8bf9bac7e884bda21ffee0b8fb1a879b22bdf5d3872b7b500b5c. 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/QZL382477644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x373295d5d20760c9388d7183482d9915ebad9ba5803e80c2498e3455f061738b. 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/QZMWW2444655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x447178ed7b08c353330cc827c61a3a862d1c2dfe787dbb1c4870c0d9c87269bf. 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/QZJG52486885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc74d75396ef973175cb95fae7dd81dd71955b2380a87b8d02bdb720edad48164. 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/QZNB82431981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e3656e7a173d3b239c5625d1fcb9e0f30f76fd6332cd58807010da6780ca583. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:46:36Z), 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/QZNMT2443094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc420d649b336bfd226e39b539b5871aa1290553bbfceda51b15f4cdbf6e715fc. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/QZNMT2488181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68b03685e1dfc671660aa6a87c68c91a797c2cf75648d6d4ac90f4c5415d72c8. 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/AUGBT2408929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a09af5b3b3209039e06aa119d9e2a9a737c5ba76274df24bf437fac1da7ec89. 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/QZNMV2456325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcf05a128467c52a75c760408353480b3631609a2106748755b058d6692325f5. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZNMV2481798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24544f1780312fe9a1e0816bbb89dfacacb2c7c7cf9e3d57f6efc4f11d8c3200. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/QZFYY2585716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9d326ae3a86d6baf688198657ed462a92080f34beea160df0f75e51b16bd5c8. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/QZNWQ2569181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83c9e542698c744e360f54325f4abccc1a9b5a31af7c02ac275249f2cd158156. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QZFZ22505842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f304a8ca981818c47d51c916479ef7021fa5f744c9581d8e37950ec690b1802. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/QZFZ22507486.