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 0x63269c9268d87182b032163ff434491418adb07c4d9d6643a42fdb23a0ba3518. Chain 2 (Bitcoin): anchored in block 953633 (2026-06-14T12:47:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/34366d9c-23c0-4ad9-a8f3-7591df0b9a74.json and https://artists.proofprofile.net/proofs/artist/34366d9c-23c0-4ad9-a8f3-7591df0b9a74.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Caboclo - Tão lindo como um beija flor (Acoustic)
Caboclo - Tão lindo como um beija flor - Acoustic
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 0x38e8d59b058fcac6334b4e6656763b75c3d3744636542e20d4ab5b98d2515e02. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/GXD7G2225582.
Caboclo 7 Flechas - Em uma Tarde Serena (Acoustic)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99bd48db95dd668e8a837d163ed5b342ed80a2100a01f30764912452e5d0cafa. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/BKCKJ2400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1f2600899069b3962de54ae87dbeadda2c9a54b659d39fbd563681899aeb335. 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/BKCKJ2400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x315742454639561d41b85fe173d8604ca7a7b6268ddd6587109ad1e0c0e38bb2. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/BKCKJ2500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x594fc8f23107939be54d100e3e90d5702e0fc73976a6244cbdd6df858960b884. 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/QZNJV2448174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8705dbe6abce775bff6baef2f386b626541b26f01fbe172f5d33c671bfc6d4ed. 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/BKCKJ2500004.
Preto Velho : Olha a mandinga no cangerê
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f46f5ee60ce9e5669f2f69f6f0cfe827d675fd988fe2f493642eeb29af28f68. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T12:54:58Z), 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/BKCKJ2500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d018732ffd1f198861505a632e3385b235f6e8f5020453ab8c314e4a89fc492. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T20:13:58Z), 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/BKCKJ2500003.
Exu Arranca Toco : Pisa no galho, pisa no toco
Ponto de Quimbanda : Banda de quem pode mais, Saudação A Trindade
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee0d4a3b997b51f99d6a98c8c8b32348b5a0a9f7ad479e69d6a0d89f00615cf6. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/BKCKJ2500011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52c659e2db33a7f5f2eb9d7bc0766b448e7b8ad09cbbdce0968a89f1b09fbd53. Chain 2 (Bitcoin): anchored in block 957796 (2026-07-13T03:24:42Z), 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/BKCKJ2500008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8aa99f50ed0104f93540429cea63cd93358ae5d01e14add0a510e52401ba962. 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/BKCKJ2500014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75175e5788ad3bd334fb99aca2b62f459492a2266410a57e00e7ba7a60b6c2ac. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/BKCKJ2500010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b5ad3afeec8e13b8ea3ea87a760149b2e9de03586f6b589de7db94460d501f2. Chain 2 (Bitcoin): anchored in block 958476 (2026-07-18T01:26:56Z), 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/BKCKJ2500009.
Exu Corcunda : Ele é Corcunda Não tem Dó
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8efa0f1ee2cd9b3ed3e62272d64fbbac35ef9e5a30cc425cfc0543e75ffc729. 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/BKCKJ2500012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b3e243da4bed016dcd56ce96cf7914e71f16d1d4e40214870123406974b4424. 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/BKCKJ2500013.