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 0x7fad3a2fc5fbecdf569ed099c8f048308b2f0048d51ad3c6dc11b9377cbb7cd1. 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/9a78b33c-9933-4785-b908-1b184529855f.json and https://artists.proofprofile.net/proofs/artist/9a78b33c-9933-4785-b908-1b184529855f.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 0x38e5b5056084db8463e4c22a5b9f4c2c5ae562ccc9abdc2b28d9fa349368e4c5. 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/EGA010545091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ecff136d8f4dec88d62f1ac16894b517a073e0a710344155b1b9cac4c861480. 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/EGA010545088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22644bde3c07217650b6bb854b80826bdb75a7b7c749950f0fe10f36d1b4098e. 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/EGA010545079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x927044abbaf1b434d1d951bb31f680313faf60904ce6ad32bd26047e4d9fd5e8. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/AEA141401702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f32cfd3cc4b4efecf78346091c2bdde5de850fa0f5c7cd8688bb37f53a41238. 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/EGA010545134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c42e6b7ee2de1afff14584e93805a8fbd9bf399e5202882c0eb7326043732ff. 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/EGA010544853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f5b659dae734a46d6805b4552dd0cbab3c68841050fbf8cc4f412df2c125627. 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/EGA010544964.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56b5147c1392e44bffa2c33de1664d404f18deaf2ce428a85e043bc40da06a36. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/EGA272000930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcd911cc5cfd2aa1263f0931be5ab7cc86f86a7a3d480b17b1370f6fc5cc0db9. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:12:02Z), 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/EGA272100107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5677b2174ca550331cfb5a93904ffbdf64622489267d43f347c3b145d348d48. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/QZES92249276.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d3e5d883fa749d132c6cf59e040f5541721dc3ac60d47000fab5c1af926ef8a. Chain 2 (Bitcoin): anchored in block 957526 (2026-07-11T06:03:28Z), 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/ING212467965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8622cf26dfe67e989ecdf13497b990856a394c6fd40be4714ab5b89667bf6cdc. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T23:17:18Z), 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/EGA1K2401194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d72e35fe523804e4e15f4110e3dfa1da657da68e07d893e120ca1c466d697d1. 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/ING212410093.