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 0xdcac271fe2a0902f57763e517a20ec0080958caf47ca6b0e9d39284717dc54a4. 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/bd804cc4-462e-4916-b5c8-139fdf5412fb.json and https://artists.proofprofile.net/proofs/artist/bd804cc4-462e-4916-b5c8-139fdf5412fb.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 0x4bfba78e9786e5061bdbec66b247ddd3f0e9c5dae59bd1251e96af3c777a21c7. 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/PT7SB2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf95d5c72785c9bb6ebec7492ab9e49597a4fb9cf5b7f578d4749de22afaa48d5. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/QZNJW2391043.
Bota a Fé na Oração (Homenagem ao Pedro)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b7c1aa89448c91a0f1215102c6caea5a3384585f9a066236add9819fed37e79. Chain 2 (Bitcoin): anchored in block 958644 (2026-07-19T02:21:25Z), 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/QZNJX2319044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e8a7d5c7afacd40a7f8d2e3c4db1fba67f145ae1adabb9a94fc39db8b30596a. 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/QZNJX2319042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x575166e18dc5f06dc71d2186b7e6b998d313ce9d66c5727c43faf566f0ce186a. 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/QZNJX2359110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61efbd44560ffe9887364da4db801305aec9f8af343a20052d75efb0443f0127. Chain 2 (Bitcoin): anchored in block 959052 (2026-07-21T19:50:27Z), 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/QZNJX2359123.
Minha Vida Cantada (Homenagem ao Kinito 24)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x157ddd6af87fe726e18056badacda6f8182824cfaf2f22d89327dad0715e5f7c. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T13:14:05Z), 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/QZNJY2321539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b0b022b0449cccf91d6a4a6a6ae6377d1b5d03a9b9451ae8d25f964c16d540d. 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/QZNJY2321541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c0967b835a42672a46d36f874198023a4dcb8889335be0a907f959c484a26e2. 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/PT7YQ2400011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3b1b01a1dbfed19ca831b6b48b43ff389cfee20520d84d07c4c8ab9b90b3948. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/PT7KR2400011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x707705df5e5f59c9ab623ee9f5da6c46c0a15be2d46011b6cf3db31810a13d77. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/PT7KR2500093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf82a74a34b00a9fdc4631a9755fb91b45d8d06817826ebcfcf85035d89133479. 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/PT7KR2500083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1536dec903cb4249958c2ed51287127a284f59b9437752fec9a4e88f1f8c09e2. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/PT7KR2500079.
Vamos só na luta (Homenagem ao Capita do Inter)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08a749bab3bbb49b2b43495cdf8d83e5729c627be435f7db9d50ded5cf5025fa. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/DGA072505648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeed9e328b6549768d7b68b075b5c16772507a09822568d52bea5d6b102d0405e. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZMZ92335104.