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 0x5a2085c4b5b4a12afb73b7af1c4ac38a866c426e624545e5299ec4a95c4e5760. 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/4fc20ac9-42b3-4f77-95ca-94999fb54357.json and https://artists.proofprofile.net/proofs/artist/4fc20ac9-42b3-4f77-95ca-94999fb54357.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 0x5be3c601dede32493a0ea6f89f9af2b23d393b390cf772625dce5281445ab0c8. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QMBZ92266927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27694901d9f64961d6dbd738770963ac521610a986fac83d4ee067e54a0d84f8. 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/QMDA62294586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x171de7fe13190e9fc362a33b773370198019f326038fc4d1127c4735911440ea. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QMFME2288702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde3edbf03b07504e3234b74fbc1b3a640df4c412e5ef205db45f8c05c48662ba. 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/QM6N22352885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb724bcbe71f3477bb3ccb4babaf9712df7a052d379c1475e45e2acdcf9f8baa. 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/QMBZ92341055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x031b3e46980968f31a18514776fc4760f7b899e78bb798fcf5fc71b201c67bbb. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QMDA72397818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa215fafe8ad08190ac54259a3ebc1eb4d238fdc34359f372134c67566e84244e. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZNJZ2229451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe55928863189f5e8e8ab3d51aae9266aa41e533abd44fa40f4d9179808afdd21. 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/QM6MZ2261664.
Gonzalo Nawel: Locura Mix / La Clande Ubicacion 4
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf59a56726a4633cb5aac2806cf3d8fbdcdadc1686a3c67cb14aafc0cb2fcbfca. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZNJX2399985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa08cb50aefdb7fd02ebba88bb952a13cf83668e74e0538ec8309b5e5e97f8598. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZTVM2365157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0591d0f16ca6f0e305b835c2476102bb80fd35e98549d11038dcaea367d613f. 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/ARF842400026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0df4cbd7c24a7d7d3dd3caf573181df68aa49db561b8564978dc875b880f73a5. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZTPX2375540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1a3b4b2422cc4b3e480c534b3d25851ce1c38b2d1c8f2546c9a9451de9b1967. 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/QZNJW2390904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x027547568e3b02301c28073f4a9e3520770aff80e3c45c06e48b4f7b78d1c530. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZK6H2114302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b16cdd592f494f8d03dbed6e31e404877b11b606fb0f7e273d3b4e54ca92223. 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/QZNJW2492507.