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 0x64c9b956e99021cb5ff53eaa7bd816c51b77f24d49103e86c79f816c88e5ebca. 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/f518a92c-42d0-486b-853b-116fe907ecc9.json and https://artists.proofprofile.net/proofs/artist/f518a92c-42d0-486b-853b-116fe907ecc9.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 0x38b1c24ac967773461a4140f5ac29cf077f9ac1ef1a3a249b24f7ff11201971a. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/QZEQU2066384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc476b6ec2f899458cd8d807e93ab7aad7b9c4a0a385ad6190bd6da66d7c22d5b. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/QZEQU2066385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b9c8e2296eda9d048abb5be535714350ae1c02c45371f0b951a84f2ad864e9e. 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/QZEQU2066386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9750a55e5c06fd0da8a5db702593dd18d82ee356db46c711f43fec5ebe848eab. 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/QZEQU2066387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fc2fc19e844d5b0d6d94af038f091912381691fe07c48326fcb5c9966fabc10. 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/QZEQU2066388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00ae337fd38c1da6b6c00e3229de3b44bb3ca88685d6b251721fe43c21d50e58. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/BCUK62400056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd852775993784aba6488506efecf0fb4364a09130d2cfe4b7de30f528f37175. 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/BCVK92401663.
Ritmação da Cornetada / Brisa do Bico Verde
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd257b9d5a0aaf4d4bad6c207dd6ac440fd2932aa01a5e2192cbad09f71921753. 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/BKHYR2400188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb00a5fd843ef4c52fd0bc7892b040d89765e374a24096c761e581dc80104cbc9. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ESA112442483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8e99c6711e26cf347aa4abca9487be40c7b1f5cb0462e16c7f5c9f02339189f. 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/GXD7V2244878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12e5a36264d0e278f0111fb747cf4de042b3791b8b76630008cb69254233f256. Chain 2 (Bitcoin): anchored in block 960383 (2026-07-31T09:50:37Z), 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/BC4UH2300135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ab3f3267a8bd826e7bf4e9aa60fcca23a0d1494bb5c63f2ff8e26c4f62725c1. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZNJY2432020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3a96672804d3b66db946b1bffded94d823b624d27cbb34bd8088ed46aab2855. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/BC9MG2300037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43de0c5a69328d2488959aa3168fc22aab31eaadc307a550bf7efd053c6d70ab. 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/BKSAI2400166.
3 Tiros pro Alto (feat. MC Renatinho Falcão)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdc20d410597a730ba7c033e40b67be44b25a319ef9a46e4d064b9e59a36bf54. 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/ESA112442423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x652c4670b59af57655fdf7fbf95f29ab01519422fbd25ad28f9261091c8dc125. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BKFUX2300315.