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 0x80bfba3aeba611abcb526bf9aa6e064a461f4e1baca1e1ac19ea8fd153cfa560. 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/747270b2-5efa-4e77-bc0d-d497d26656c8.json and https://artists.proofprofile.net/proofs/artist/747270b2-5efa-4e77-bc0d-d497d26656c8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Alabanzas Cristianas Que Llegan al Alma, Vol. 7
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 0x153ddfd70579bd195673059dffde74de24873ed7c2da7bf24e7467698dcbd6f0. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/QZ5AB1822844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81770f6d8b915918fcd8ccc464df40f5dcd23551d9df39e43dfbb2f1261bfd98. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/QZ5AB1822846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc957b97a5c26bd1048092a69d36d9911188f0dc67e4edf087e47a3d44bf671e2. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T19:05:48Z), 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/QZ5AB1822851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31604680082e18c40d45b10fbf2152c39b2e3bf1ed153391c3a3c47845ab9fe4. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/QZ5AB1822855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f94bb67cbbcdacf7037dded36e18eb5cc7c32812bddd5b4439e5d2c87c97da0. 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/QZHZ42259986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bc1d80920e5947690501575e8f4c865f1049a0b468320b739fae75eb0c90448. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QZHZ42261838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3d676a482101049debbfdaec22211d3c364aaf45343aa01de7bf380b14c13f9. 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/QZN882522583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x319642ab3476fa4d563c59797d9c3c8a8932326eea0694e31f3769ffff960625. 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/QZGLM2575679.