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 0x22020471c904a3cde9fc3b98949677372dda62d2454ca69328bc5c4b836d0293. 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/bb1384e2-5f8e-40ce-90db-19dfe0c3ed18.json and https://artists.proofprofile.net/proofs/artist/bb1384e2-5f8e-40ce-90db-19dfe0c3ed18.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Poco A Poco (feat. Pacto Latino) - Single
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 0xead032c008a8c1e04ff88a1ab168ce5b024330f9425050693914e4274522d6b6. Chain 2 (Bitcoin): anchored in block 958705 (2026-07-19T08:43:25Z), 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/USUYG1073369.
Libertad (feat. MC Davo & C-Kan) - Single
Si Lo Permites (Remix) [feat. Santa RM] - Single
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12adeb89b550c4ae8f6402a1fa5a136f17c0d9e6e7fb287beb42b54cd1741692. Chain 2 (Bitcoin): anchored in block 957866 (2026-07-13T14:54:25Z), 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/USUYG1076242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x071c901bba2db973f8531c9835ab158dd8041cf1d92ccf9fff287541f4e34918. Chain 2 (Bitcoin): anchored in block 959103 (2026-07-22T05:56:21Z), 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/QZMZ92024908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f66471f5de8348d479f9bbfea7e205b591a9e8bbadce4094c4809faf957931d. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T02:01:41Z), 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/QZTVM2108258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a572c4ee0e65de1d46f0736a61f4d51c94461faa0ef3a2cb5881bcaa53be7f7. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/ES71G2432024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x651cae222f60881f3fee31e423b55f27e16efcd8a2a70d5065ba25fdaa186f58. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZTVM2290368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96565cc02a707a24d30d41376bf72b91fcb33bd252afb05cba1ef9254aa4263c. 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/QZGLS1978366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cd69ca10bed92ec4d39cc9bdb251a859efa003d1513b810ce2b6c0d5902274b. Chain 2 (Bitcoin): anchored in block 960183 (2026-07-30T01:10:20Z), 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/US7VG2086588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x141f0edeb44fea57d089612b83f5b9dfab5465277fd9466826ae2bcd847243e7. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/USUYG1089309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ad159e90646142bd250f8c2ee215655ef5be9f057f98feda8fec7d057de679c. 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/USUYG1262800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18ba1b160b004dad9fb36a9af2fa2173a90428dc28a800e133f9afcc10c2286c. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/USUYG1262801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2572d9d5cc4ab9541abd6c5602b6ab4484079dd4d125cb73520c5ffb5496a64. 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/USDHM1429348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dfb3104912a3ba76d73c78e661cccdfd81f268f40c01b3a1d732bb3a625875d. 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/US7VG2040062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d36d0d67b4279e3f0de5b47ec7b63879332f0a2adc90542a4fadbd05f4a1256. 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/USUYG1080223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41cca51464f21dd1a895b92d60b81a271958894854d2aef47b0e813f98e7e90d. Chain 2 (Bitcoin): anchored in block 960276 (2026-07-30T16:01:17Z), 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/USUYG1080232.