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 0x395bb11eae4786563b71816f5c08b2ef085a174c7486d2a129e5fedf7f8d863c. 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/f09e30d2-1c0f-4569-91d6-9478db168fbc.json and https://artists.proofprofile.net/proofs/artist/f09e30d2-1c0f-4569-91d6-9478db168fbc.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 0xdc63e05d772ee1ce8f6dd5e5da7ea37b932e70b9d6887677133a0729ec4bcd46. 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/US3DF2010562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x772ae20e71d7c563a347372a692082ff5758f2eadb9a2b2e87c3761dc832c8ab. Chain 2 (Bitcoin): anchored in block 959063 (2026-07-21T21:45:32Z), 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/US3DF2010565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bf5abab57bf2f324d673dae181d61e4a676e9b663b6ad1627d4879d8f506560. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/US3DF2010569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x874bd9b27237d80accb7d4f07fc6fc833ae15ab02f728b2a6f649fcc0eff9815. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/US3DF2010573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x153c092c34e93721cdd637566c156aaea49ab5a1978a80e54e20a350f704e99a. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/US3DF2010577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56ff4cd3c78a67a8aca59472095ca13a9b6f173a761567c143e91ea065596898. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/US3DF2053345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8cd0fb53b2c0806c86d277f66086800137fc86ca6feaee081ceea2250f87581. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T10:57:35Z), 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/US3DF2124538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6866a0ea6e17fc0e73c2fbd4d0b9604fe23239fd6de5aa853bdcd25e4f1be89a. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/US3DF2124536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f225061bf5ed29a580b2a47b7ad77807322fe0b4f5984d580e0185fe7d951e5. 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/ARQIW2213856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb21eefa6cdc45742399835ff62ca6da7e9a619f130e9d732807410089855d7f. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/ARQIW2213858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x629d1231b38455144080ce8d87e7a7f3b9c6314520932a52c9f784806aada57f. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T15:31:18Z), 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/ARQIW2210848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42a94f6f9a6bdacaf2a554e117e2eb5781a65dd3c1bbf61438bb99b9f3124bf0. Chain 2 (Bitcoin): anchored in block 958864 (2026-07-20T10:24:04Z), 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/ARQIW2213859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa51e81cd4751e43c3f894c520fcd6fec7146e6c6a6f5336f17aafd623e9eff4. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/ARQIW2211502.
Canciones Chiquitas En Vivo. Las Magdalenas En Banda
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed3380f624cfe42ecd53b438e420bc7f6606ad7e69e206ac084fa25e2bfb6ed5. 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/ES64E2467336.