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 0x750097567010594371c22d9691f81617fde85ec09d37d6d44b5bc3e38242bccb. 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/14de3d40-2d98-4f38-9ed6-288dbd60e57a.json and https://artists.proofprofile.net/proofs/artist/14de3d40-2d98-4f38-9ed6-288dbd60e57a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Ultima Botella (feat. Lenmelody & Max Agende)
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 0x7d8a2e0c5d4c8cca682e81074e5597d3e98e9750c43cd3c0a3fef518c6fd6bf5. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USEWG2200002.
Me Engañaste (feat. El Chaval de la Bachata)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72183dd1a07c33e49b4d75777e8165c541c72899bde2c8776b0cf32a7810d5d8. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/USEWG1510015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x286c23ac73bf296dbfaa1723f5a7a9ec2d21c693bcc3af6aada89ad513f6e514. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/USEWG1510016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20c2a7499696ca11abd0f9929f563a823e328af7b33384641340eeb2f9af3188. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T20:03:27Z), 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/USEWG2200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a3fa5ab1976b78eded3beb577aada096d3683694c8a25fa514ad12aa215d6e5. 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/USEWG1510017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cfbfdb63b3a6dcc2bb80048d16fb635fb548194d381dfb2000557641a6ad943. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/USEWG1510018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x925b5f094b0bf63b72c64aa6e0f4f644b8bfb3a144dea4c2e3669e9b4c53508b. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/USEWG1510021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3cced0e639feb407dcf26ece007dbc7a84b7c1d6d113f5123ed49db36b3d15a. 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/USEWG1510019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf01b696b1bb9eb38734a553000688455b1b05ada6f5dbb690bcaf67b8d38cdb. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/USEWG1510023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa79502083d7b0c23ac1ab879668c82407f15ceb122ca46944878786d5bcae7f6. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/USEWG2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e661a41c4552a0f0bb6d709b3013baf4366c1f9cf723cad9e138303f459f59b. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/USEWG1510022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d8a2e0c5d4c8cca682e81074e5597d3e98e9750c43cd3c0a3fef518c6fd6bf5. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/USEWG2200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x830f31e7112c2e32aa8bb9c0220327113c3198c577da2a670a9e8e5f3f467014. Chain 2 (Bitcoin): anchored in block 959034 (2026-07-21T16:34:25Z), 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/USEWG1510020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2588094b2c6aa03f0315e36ae3ef0cf4f58b650fd926f0cd1b5e9142f0678cd7. 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/QZTBC2357430.