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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08e7de28c8481028b9ad26fe07b2ecb68e5fb17dd2b7e3d4f8469ad2bd1f85ea. Chain 2 (Bitcoin): anchored in block 954516 (2026-06-20T07:04:44Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a0cce466-282d-4bb7-b0f8-4153f68019d8.json and https://artists.proofprofile.net/proofs/artist/a0cce466-282d-4bb7-b0f8-4153f68019d8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Quem É Quem (feat. Miguel Neto, Big Nelo, Gangsta, Samurai, Kool Klever e Irina)
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcba182d87f8a9a8b0cc7916104d1cd744bc1e6777e583265e1154a5d0c6537f7. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/PT4CA1433944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5110952bd0eaf5c79efb53aceba757f383f95685a0b1e03bdad24a6a628c11c5. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/PT4CA1433946.
Time Is Over (Acabou) [feat. Jack Nkanga]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf18eadbe3565d4d6939351ab500874f22742439447587b42bf639afca4f6cff4. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/PT4CA1430887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d961ce3662fba44d6d6e02f463082b742b9548ada8e7d36ab71e2ec048b4a59. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/PT4CA1433960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46db81d32e0786d9f50b9ad528313fe0020bbd91f371d301131bd83370365fc4. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/PT4CA1433952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a465db7c4549ed825d3fa2d058e2c3c41de9a57b668b9139505cf4cbca1fd70. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/PT4CA1433935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5ec68a14c1f8af54822f0b822b10393f2895354ef893c9e03d4d7ce091550ca. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/PT4CA1430884.
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 0x8521af8c0220bd05992608f75d18d3b48314d25a333fde239d4c090918658fcd. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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/PT4CA1433949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3144a000448081360a5e9b03a1a06dea16023c0dbdad3f46991905a1183737fc. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/PT4CA1433954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e0dfc8718879551934687586d65be11ebe61bae0cb8eb9e545c7f67d90b20c9. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/PT4CA1430847.
Vida Em 3 Actos (feat. Donna Kelly, Da Bulls e Fausto)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4874776ac6b0c8741fb30ab6c7588974017df78666ace923e93dd1907b93017. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/PT4CA1433931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x739ef0c6dbd7989abf2c412d3b67dd76325ff45bb12ca559cd190b9bae6fb72c. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/PT4CA1430849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac55f5d4f380c23b49ab8cbf42f6fcdd03aae021666f9c28971c71d1d9bb647d. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/PT4CA1430881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ea0162ad2a46882013a11cce9076844326c9e454d750b3a471f366fe4e93da5. Chain 2 (Bitcoin): anchored in block 960330 (2026-07-31T00:58:21Z), 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/PT4CA1433932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe01c27a6a5067f5f2f3b488120936795ae5ebdd2704970bf0473b25e6b11fc30. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/PT4CA1430857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e15aaa1a829e55b315f2f5727936acef15ae4f723b0ea4df0382d0190b39ebd. Chain 2 (Bitcoin): anchored in block 960429 (2026-07-31T16:07:24Z), 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/PT4CA1433958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58d2003260053eddc52e8e1edcb6b0d7f206760c2e5886c072ad597c86fd1b76. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/PT4CA1430865.
Pequenas Coisas Afectam (feat. Anselmo Ralph) - Single