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 0xf101a23327b91c75fcfb4252c54f8ddb52bb4fe6544bd9175eb50deaff4080a8. Chain 2 (Bitcoin): anchored in block 953808 (2026-06-15T16:45:15Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f27b9f97-fc72-4a39-aacd-2a8bf201f249.json and https://artists.proofprofile.net/proofs/artist/f27b9f97-fc72-4a39-aacd-2a8bf201f249.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 0xcc5ff7f485247d078a9305feea7034e48c12577bed95c010805f11afa3b72cfb. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T05:02:23Z), 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/USE830952945.
Firmes Hasta El Final feat. K-Road & Lobo Estepario
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x113a8208e3df4c20db402dac9faaf5bf87a19446f3da4db69ffb74e1262fab86. Chain 2 (Bitcoin): anchored in block 959015 (2026-07-21T16:38:19Z), 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/USE830952946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4fe7660268744c23236403c328bc6bf73f3b94a591d51124a7dc3223a15a0cd. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USP6L2100980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1eee9eefe879592cc6584a6b977d5c33225df59562972c89ca8f2323d7c6515. 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/USP6L2201096.
Bienvenidos al Infierno (feat. K-road, Rctfk & Lobo St)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98349717894b8a6124d5e3b979ed9f8faf8e4a556218f7d38a087c058ba356b0. 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/USDHM1515460.
Octavos de Final (Rc Tfk vs. Yoiker) - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17c5da07e44fe44c1872c9757dc90b776a56e7afcf6c742f64c834610ff3c2d4. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/ATRG72006009.
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
Rc Tfk vs Lobo Estepario - Curatos de Final - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00987f4cf75fdab24229c23237dd50ea8ac7dfb959646655d7c39445a7a318f5. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/ATRG71906009.