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 0xac7dc5ac04dd20ad69702b37883eebfdc42052613dd77ada5544c8282922b585. 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/344174d2-0e4d-4834-9a7a-0d10f34410bd.json and https://artists.proofprofile.net/proofs/artist/344174d2-0e4d-4834-9a7a-0d10f34410bd.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
KALA NAMAK (anniversary & guitar version)
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 0x9234ff051c89bc1a2125b741247040edb5b23465d45911b1e72af29ef63c9e54. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/PLI369553260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8d357922af7d4e35f1c06d1e59885bee98dc67fa046eed34b231d70564db674. 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/PLI369553270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd40f5a6f0a5cc8e3353f9fbbf99f399d52c4db7538407530eb45fc8e4469634. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/PLI369553300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x175156f134db438bd6c262945548cf62c6a14c40ffda93ad72e54418bf612fc9. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/PLI369553310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x562a19aafdc6af2ef3ee338a9f04375bd5662f96739ba96afd37fad373bc96be. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/PLI369553280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a320852d3b53b06015e6399ca83fc9a87ac3edb38eb0ad5616d1e480a311841. 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/PLI369553290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37e52845d634c263d01590cf5b75de72102ae4ebf545f08b0bebff5252290472. 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/PLI369553350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x288ce54381a45db85dd62bd614e6b260e64bd35dd9d53132169fe5f20dedec1e. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/PLI369553320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9175a6ba1164cfee3149c98cc4b4ca88e05663d1a8e7ca17dde88865d864eb60. 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/PLI369553340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87d983200e6bda6a21df8b1a6e657fae889074546b5f924268a9dbf5c21587a8. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/PLI369553360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8675a966499670b3d45fd0f5265ea15ee20bd1d985c4ce3f38083307ccb71511. 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/PLI369553370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x356c0c7a2b1b4f9b10fe79f1c28b365e3fc7acf839eba94099f6576cbe0ada4a. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/PLI369553330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x339f36ff3597e41f09594ed0e759dba124ade52fcf01378ad9eac9266a28b125. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/PLI369553380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3fd5ff9e7d7cb319b9d229244505b797e985ca8d0b605233bf9005638d917ec. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/PLI365720890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc32cd599cb5c2a2696b5639e73b6040692f9bdb7d2f0a0d3c74219a423e0c15c. 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/PLI365720870.