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 0x30dedc8e4a28782e4277c922155562813e121552b5084de7fb29c0eeea34d92a. 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/5060630b-1fe0-4ea5-973e-78ff7f3a9fcd.json and https://artists.proofprofile.net/proofs/artist/5060630b-1fe0-4ea5-973e-78ff7f3a9fcd.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 0xc478c654d4625a5f2e87f60ec7d3137ef25e8d0d41c2049f4fc7e092c602aa6e. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZPLR2103705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa207e691d15d908fa2ee0db287b70148248ad32b8c442220ac8a52c6f7cccf7b. 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/QZH5E2266764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44ce9270e2335c65256affd6d24955ee3c1b42500c2d2216a26e6af2c00d2cad. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:46:48Z), 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/QZJRC2265327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c5faa7a57a509e18c51722d4ea4099bb28cb9eeb47c463ff65c253953dad568. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:49:25Z), 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/QZJRC2264200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93367a9762aef283dec26eb20f1396b56dbbf5435f736f2e7bb903ee2c8ee349. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:36:16Z), 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/QM8DG2390512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x853a911a16a55da7fa3c3c37e319d184d121bef06f9ca2152ceb704ba6e49f6c. 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/QM8DG2386290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a0a9c6f38e5644155d03c6a47c0e757203fc9fc7d317b3db96d6fd4d3b8511e. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T18:25:52Z), 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/QZPLS2383339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d28f7981ef56d2157b88397d1157282f48a47376415324a35f79e2f13d792ef. 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/QZFP52474772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbe65d1a8d092d7a241de527309ad641e0d1ade52341e928b70661aaf8cc255d. 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/QZH5E2337356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa90b77fea42f3e9c7321fcd254f023c50c202b1949c29d4193e164845495a8ca. 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/QZTAS2472793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0c9ecf1ee0569b223a427af356eadd323cf55b1d2e726bde83ddf8eac330ef9. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T17:34:11Z), 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/QZFP52474775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f93b5755ce75bee7eaa31c65897dbd78522f6db2cf9e5e0d9c1831af307506b. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:27:21Z), 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/QZFP52474805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf31f78c8fbf09fd7776e5b0747b10e1a88870802520750da741f692eb7a7835. 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/QZFP52474806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d91ccc65678a704ab51107bca927bfe1a757d86e9c193712e5fd8b0b89a7beb. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/QZH5E2481404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4c335fb115785de5f7120c51764159c2502b25f5cf17ec994781d416ab7d5fa. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/QZH5E2481406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cbbaae72b34fe609f7f0a76172fdb0de0b9ed94a81ea46768ea910bea8f254c. 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/QZH5E2481407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31876bc84b60f9b1424b75d3cc5cfb684ac589c6b6bddb9e2a422e211a77aa8b. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/QZH5E2481408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x737f276fe136862dfe26494a53ee2745f9f661e6e77d48d5f8aef4268b2cf6ef. 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/QZH5E2481410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aa2d8a0198aae51e372621ed5e65f49a2e99e10f9424e41a5beb1ee812f4333. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZNWQ2277357.