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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3cbc0146a5d54b99725c91ce2e413af7bdad4b838eee040b92b15484756c0f3. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/494db402-2921-4321-8862-ce373cd63e1a.json and https://artists.proofprofile.net/proofs/artist/494db402-2921-4321-8862-ce373cd63e1a.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78d7c676666e33aaa6bdeb829ca50c9e2aeea1fa856906d9b0686e1d80b9182c. 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/SEYOK2427843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29d7648fcb59b520a4991354dd31204f5637130b48c3576e23b0cc6b87c0b739. Chain 2 (Bitcoin): anchored in block 958695 (2026-07-19T07:37:00Z), 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/GXF972426348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb5ca5e346a62c7e19a90748aa949055c52790465e1776f7c9fdd65fad7b53cb. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/GX8KD2547828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x079433be0d68b1896c16ec916af3489dfd89aace087cb4913ae658d1ea5edac5. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/GXFHP2459676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5ffc40d9d6cae8d7302cca2568e55c209cf1ec7f8ec12858d2ead6436a5fab5. Chain 2 (Bitcoin): anchored in block 958695 (2026-07-19T07:37:00Z), 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/GX8KD2561696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x551aeb6ba0664a1136340724f0f48aeef818a88b9c9cd089e9a26d94e0820417. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/GX8KD2542777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ea45baa05037072a9a442f6c5b480695496aa66a2010c113806df9beb2a5552. Chain 2 (Bitcoin): anchored in block 958697 (2026-07-19T07:58:24Z), 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/GXF972426694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe41b57e8a3b4b1618fb35dd5f564cfb79da16eb955f1150ce77dfdf3a51cc531. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T19:26:13Z), 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/GXF972476972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2b89516561cabf01b32da100f03acdd25bb2c692ab414e2b1d3e1d7d1076cbc. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T19:26:13Z), 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/GXFHP2446452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d1e8acbbdd4fa3be98aed82a00893c6402cf63d94fdb1332e5eafbca16573a1. Chain 2 (Bitcoin): anchored in block 958720 (2026-07-19T10:53:46Z), 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/GXFHP2467797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x357aa9272bc44d5bef7cafa958072b5eaf6beb55ae7c6cdb296adff6b24fe58a. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/GXF972476131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47cadd5f1ec40e4520fc52030db16017711d03f6e8953a9d8d4a121abdf4c0dd. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/GXFHP2408948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12a8728b690d608f0cc57b48d4aa735a83048ab708dcbb8457ab9e054d008061. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/GX8KD2557562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x694b9fabceabd10f791a9de901315c977141f2336a691fc3e6eb5987f69f6a05. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/GXFHP2446488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdb0e0c09a2b2da447ce463a6adad31a75b71533cea8c346083ae2c5556aaf63. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T19:27:18Z), 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/GXF972489444.
Danny Partridge Impaled on his Pear Tree
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b0359da3fe0b85edd208f19e09d3cc7d9b8958ba016b1cc2eba645ca5740e44. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/GX8KD2595896.