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 0x27626017c504aa627f7efcb469ae5e9579b7fde15ee662843cb00c434bec877f. 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/a40e2c6f-2fe9-45c3-b6f4-1c1952119f9b.json and https://artists.proofprofile.net/proofs/artist/a40e2c6f-2fe9-45c3-b6f4-1c1952119f9b.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f4d5b73aa73f7fef4a0ef7f58afa087722e8081e8fa8f3902f3d4d91fa24c16. 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/GBEWZ0407102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8df5ff084c376df8f1f813c8215e47f56856ce650d6dcb1f1e5de30f4e8b36e4. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BRWOS0700099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa536c047de578c3f01bda4cf8b2bbe9a355896da483f29145bf615940fcdeaac. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/BRWOS0700100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1a8f0c5a55ebbc31edc819748833f75f0e85abe63c48af5804da63428994021. 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/BRWOS0700101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d0f615c21bf2695893f19c5b366ee858c48d2226a6e35f8a36c4f8c6e00120c. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/BRWOS0700103.
Mentes Tão Bem (Mientes Tan Bien) - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b70c952bc70aab67c6648999050903fb41fd8e2b6a932d1fc78584194da8535. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/BRWOS0700112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65b3dba60b33bdbb99ce736dd6209bb0fb43d58afdb27be62e965fc732e6cf3f. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T13:20:46Z), 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/BRWOS0700110.
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 0x1e9b5b48d1a1ffc5cd22076a74b4c4cc255741e578d9f33a03b9f09308ddb1cd. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/BRWOS0700098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaec914a9440a6a4688b6f7a38abbb71d489fa7bd57ade924f5e01b4e95c5798. Chain 2 (Bitcoin): anchored in block 960241 (2026-07-30T09:58:01Z), 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/BRWOS0700102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0a1b03d1a116c5831fc6b153ba33bc4e4c49db312c4a5fc0fa0290665773835. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/BRWOS0700104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe733135653b8353e0591aa87599d1e7af47f4356ae75bf7b6217e8ad7f144057. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/BRWOS0700105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc60b7be3ae524cc6f17eccba50ece064662441b5f9a97ec25c33c60c260773a. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/BRWOS0700106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf71d1b43217cdc96725872fc1a09a1acdd6a7d10602918ab537b5b1d3ac07c55. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/BRWOS0700107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19ae58a40a51113ea777b405b4591cf9205c3444d6a3112f1be332facf87322b. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/BRWOS0700108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d18b2121000cc3993ff0434da3aca19d1503b4a8ab13a84597f6e21a90e1bd9. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/BRWOS0700109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3518ca5da9aa2d8aa1f8c3dd3b2234220eadebbf0b2eb3c4212c85b0bcf8997b. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/BRWOS0700111.
Rancho das Flores / Tome Conta do Meu Amor
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe92243eded0f32bb8cc82e824e1f46cc4abd73d6d1fac3ee46637d8333150c1. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/BRACT1601363.
Medley: Olhe Pra Nós Dois / Foi Covardia / Meu Segredo (ao Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad459fd415999334355e29a502d40ba42fc1b982823f4cea182a867c7e6e3866. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:16:41Z), 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/BRQTZ1810353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10548ef52a9f272661b41289603630adc2babd904daf19de40c288dae4b918c4. 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/BRQIZ2000082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65115a175859d8efd180b04e82b66c3b132d9a8d05474aa6142b8a87b1a2e1a5. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/BRACT1600738.
Pot-Pourri Lembranças: Prosa / Convite / Tô Voltando Pra Ficar / Bugio da Capela / Rancho de Beira de Estrada / Galope do Mouro / Tetinha
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8fea93a9a20c80a3fc84e53d35ddeb263ceebafb9d2013645484d51a8401a22. 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/BRACT1603620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb22b6554ad12937c1135588f39f95435ad22338f22625704a6138198eabf48b4. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/BRACT0800293.