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 0x4e173d98b392c722fabc33730cbda27a731e08a9dec3cddd7e2762ed37b7253d. 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/33457769-581d-4ffa-aea2-2229f0c3eddd.json and https://artists.proofprofile.net/proofs/artist/33457769-581d-4ffa-aea2-2229f0c3eddd.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 0xa83f65c6ae2825b91c0c3c500f4e569ff9ff6bd7e27757bd8f25c7a1a513f0fb. 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/QZFZ62289461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34bbb27b447c75094783456ca0fe8a1692203017cd9ae7ab2ff0554579a36836. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QZDA52287659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe39a323ac892ca95863a913b9efb511c4c064520e0662777a304b48cf7ffabf. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T00:33:20Z), 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/QZDA62299373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x545d8663c563c41be4987f1bde9358d5fd4b8ad4881168f2334809167189a741. Chain 2 (Bitcoin): anchored in block 958051 (2026-07-14T19:14:42Z), 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/QZES92286541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54b3a6a11c4d8f56717122c8d022ccc3c14d470880f49d3d02185cd704025e06. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZPLR2279134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6221296ac4ebbdd40e0d2077ecbbd29754fa279633b8e527bd7b4c8384b76e5. 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/QZTB42294865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd397db42d13bf43a11b9ee13d9af731ce9df818287f73a3988ff12cc060eb888. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZDA82353045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x456b0abce86b3f20e0f86b7571a1cf52c31ffb40ce8844bf023befa0c255f64d. Chain 2 (Bitcoin): anchored in block 958680 (2026-07-19T06:04:14Z), 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/QZK6P2377345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x486d3a8f239c95bb5345b656ce5f51c4fc4a3ad503ed5d04210f8e0f4fb01445. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZK6H2344239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80873c22762d15288c9c85d296da5f21ebc7de5e33ebd3cfbb976ec2a65daca5. 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/CA5KR2444120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbedfa776336ce836f7bc75de757a1de5f0e6ba6a158477908aa11862a67217a4. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/CA5KR2477670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b876f681dce8ea057568367e73da178ebefcfd601d1485313d362b791410081. Chain 2 (Bitcoin): anchored in block 956405 (2026-07-17T02:43:52Z), 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/CA5KR2492863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x111b7aa23ebee7c764ce1d69b17ae143f8ce7aab7e35f4a1a6d48d0a110c43b0. 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/QZVEM1863203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x800469e62db72972ced950a4aeefd7f1c565db7c1a035df22f68539ea8603279. Chain 2 (Bitcoin): anchored in block 957579 (2026-07-11T14:35:38Z), 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/QZPEW2561619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0210efcf1f866c8d6403ed2679ac55315bced04834154f3954568c4b64085981. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZPEW2587780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x161bbb2c7a5f89794cf30a4a914e95e232f5d87bd276d0da0f1b61fd29443283. 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/QT4K32515802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x461f4999d3aade9e7f6b7573e448d7820e1d052bcc815ce5cac6280a49691320. 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/QT4K32515803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc413db3aaacd420eedbc71bc1361425d432b0a2bf05744e1addc17c714480c83. 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/QT4K32515804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeede886dc37998d59a55b6128c7ac7fb1fa71ba2effb4d24041249f049399816. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/QT4K52525542.