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 0x669fbfc1f01054323d7671a75496152a5e7fe3947dbc26cd9daa20706b03e63d. 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/a7158f48-befa-4fd1-a8e6-4a6db0eccd50.json and https://artists.proofprofile.net/proofs/artist/a7158f48-befa-4fd1-a8e6-4a6db0eccd50.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 0x1035fd55866d9b747be4d53dda1c575bf16200712a1427dea13e4bba2ee0d0b8. Chain 2 (Bitcoin): anchored in block 960222 (2026-07-30T07:48:45Z), 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/USWL12300763.
Popurri Ruben Vela (La Papaya/Borrale) - En Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefab5d9888fdcc627dae2a860decb1b4fa13a602b4a936ab432f9533f26a236c. 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/QZK6L2117578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcfa5c0c1d280a809db8a1a003df3cc436676ded6d599aa9d2f763f566b36fc7. 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/QZFZ32202875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x917dc3eac9084ff5450ea853b6d9775760a6466fe52f6920821600a88ee2fc7b. 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/QZFZ32202876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbee2250a9665c117a9d9c4d515f502c20e6905e7deac5789ffa0c274a84bd008. 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/QZFZ32202877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51546c18e7ced57482c85ec37dfc82f68c8beec193b075d88fdaca4cb8d7f855. 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/QZFZ32202878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x968eb8b888307b1b7018b94f5205d7094808a622601757a64649ec7ce1eb7b0f. 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/QZFZ32202879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6964e331ed3858c8d7d3830bc8346312c515c53c46985f531ec1b9d84c7a0e78. 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/QZFZ32202880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x901318567ef7cf22a88c63f366e420b04babce77f588a6488d806eff60d0baac. 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/QZFZ32202881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05bf235f2d949480148a7dd96d5f865432276e5c63bf459d83ae45f120ba4923. 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/QZFZ32202882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8488b722ee82e423105ff6371a392050badd6c159e149fba26de96328910b49. 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/QZFZ32202883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e793a37869e91789da898ba0066793fdfee561d3512374cb217691929b2a3ac. 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/QZFZ32202884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x591a9a8fa15502d8731d30f7d249a1edd62badd54b9ea0c021d0538c5a880274. 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/USA2P2455708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e6ee0b344104c797ed669bd6e84bcc272479b52578c54aa4457269386268359. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/TCAHO2323672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58350ca3302667df1bcebea2c9c8fe3a67fb2b93a51f67b01cf258c0457578e9. 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/TCAHO2323697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9385bec96532ed431bbd33a7f58a955fa0b193c3521d7017ccc6a513cc701de. 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/TCAHO2323679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25add2ac7a3c614068de242fac8d8694ec54a0ee2c4bea82a6c1b914351ed00b. 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/TCAHS2332484.