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 0xbdbb1e1e9fb62403316b5edb4101140f5d4bee44c24526dfae95e8a55e5f8377. 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/6e69de8a-1a70-4fa8-9fb1-4d986858806e.json and https://artists.proofprofile.net/proofs/artist/6e69de8a-1a70-4fa8-9fb1-4d986858806e.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 0x3a77ef52b8eda195b4748317d49ffb6b08bf1d25fab419459418f67c57a980a6. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/TCABP1371227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c63ec8c279e2bb7d2b256a647b613d8d19ffe2be0c18b4873586ab10f796d3f. 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/TCACQ1663985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c76c34c146345bdff1af67b0b382c5f4b5c83cd0ec3c7293e8b89ef9c6e3b33. 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/TCADI1794853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0664e5b3e7eb35184fa0e6a565bd84a4cfdb734b4edd71bf23cd91999ac1b4c6. 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/TCADI1794856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59c8fb653311eaa4d5d42909f7a70c1d81ea836c2c6a8b3ade2bc5aed8e76bc3. 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/TCADI1794857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09826a6528c45952ab8b2f2f4d1b924ffc8cd3f2c7273618423248aed8c682b6. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/TCADI1794858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9f7575a89592330f328288625371bf8675f5dc406d4d6d356225e22f228dbf2. 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/TCADI1794859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf93ca892a74b35f958d341fb2521ec7506edd9eccb356e992b87da2035d903dd. 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/TCADI1794861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbc2dda67138897673625251fd12205415d1b5fdee0605f5218b59e62f12a990. 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/TCADI1794865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x839aa3cd1243c96a9970b0ac3301fff9a0833e838cf876f0d4c9dec7db1ec739. 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/TCADI1794868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfa5d564c75bfa374631c8aa432a8f6540194f0316b4c8462189703149f5ac69. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/TCAEK1998754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1fb4fe93750d6e05cdc8a91d9f7a35c7858329fa46a3a016e7b1d6e8449d2d2. 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/TCAET2098198.
Nuestra Oración feat. Twice & Itiel Arroyo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x001cfdd8991684c4294b66484df47198d269ae187b918402b0d91038e346bce9. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/QZ2J21501331.
Encontré Mi Lugar / Tu Amor Es Real - Medley
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe349bbafdee0d3d30e1cdf68b352f5f62aecd9b1c8bbf59da3caf40b00a506b1. 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/TCACY1784759.