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 0x81d5e632c987f9750e1670e71e22fc63ddbfc7cece638d200882c9d213c18c97. 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/6ea00df8-6b6d-4d3d-a446-0457ae47cbbb.json and https://artists.proofprofile.net/proofs/artist/6ea00df8-6b6d-4d3d-a446-0457ae47cbbb.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 0x4556b3dae59f70e201a8a274a174227428572dd0d45dbf92a608257074163882. 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/ARG991004999.
Una emoción - Ricardo Tanturi con Enrique Campos -
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd00efab8aaa4eb01864bfb9552f02f7d7d8c53dd99b3bd7dfdc28f07c2d8ce15. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/ARG991008594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcda667c2cce369e53ff489da52d7e02790f0e9f09f478fae0b9535bac5271b2b. 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/ARG991008595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7707777b61b94019dec90f35dcc2207c47c411c316918eea09d6bf3da01e5b9. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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/ARG991008596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x954e41e0feac1f096b6923755cf307628f8b8ad1ed11a2a99d20d15daee2461f. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/ARG991008597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98fbb247ef69b4d70eaba7e5526ee235eff664bedc9b44346d195058b39c21bc. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/ARG991008599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eb29b3941f9a6343336c47a1838d64a7a446e271b56793a95e59f1bc88b53a8. 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/ARG991008600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62f52b6480372c8729c460d549ac738387420c48ce320f2a8902564be49b90a9. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/ARG991008601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd29b400fc81f6e920d11af87dc0511d5125d9d22c8aa8a34f5650f59417d3bca. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/ARG991008603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84ec5603f18326f931910ab2c0e6a03097a8290ebcd8d1586a57ceb88fbaeea1. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/ARG991008604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97a1bb453794e97f7fe2b43c503f426cdb4333d5f9be52c86737bcde02f9e3b2. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T16:15:11Z), 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/ARG991008605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x924cc3e275771afd31551a8dc546671b9f57d5a2b829586b8a58de010171e6b6. Chain 2 (Bitcoin): anchored in block 958878 (2026-07-20T12:32:15Z), 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/ARG991008609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50a97a4b20d8df1b7de9801da49b90c8df8b1a79f9a37127c655fb5c7896505c. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T18:01:47Z), 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/ARG991008611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7075e080fd91753da4c93388e8c7e3e5c1ffbcb1171803e77ac2a14f121dc482. 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/USA371447719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03f351fd5fa077dbe797983668bcefabb5f76f087500302a18c0eb7eb202bd31. 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/USA371447721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2387a96213094cee7d41d1706be3f8596b86944793109c4c0a678d19f9b6712d. 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/USA371447734.