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 0x744cb5dd110ba6784c6b625bc3bd403365f8c64a6bee23820ba1f957fa47d761. 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/6d54d89a-3957-4df0-8702-1dace46efeca.json and https://artists.proofprofile.net/proofs/artist/6d54d89a-3957-4df0-8702-1dace46efeca.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 0x9242fda9df635cac76f61777a18af6c854288a508a644940c1ea35fd6d510dc9. 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/BX59Y1900001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54a6acd20cfb84bafadf302c8b338b44b79c14a72bd13c18bb73ef868dfa6f5a. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/BX59Y1900003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26fa7e5a1b5d4d1cde07cbe5cb3eef9bfa95a9d7ebd57562d3d6f80ba98dee44. 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/BX59Y1900004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1283bcb0e9453d09e7f3a0e2c0875268448ccb903788e6e42dece20ae03f6117. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/BX59Y1900009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5a6c42d46a37eb9f90871c1b25b038b26296c3e8ab1b0b6197af5f2ac2edc94. 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/BX59Y1900010.
Dona Iracema no Release Showlivre (Ao Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7299831736a49793fc6dce3c1de0b87ec930b57257bbd87d0d37ae053cb9c0f1. Chain 2 (Bitcoin): anchored in block 956859 (2026-07-06T01:42:12Z), 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/BX59Y2100007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b712f646e73f09300e73f656006dd66750f07a9b550041b8957f7b35f7483e4. 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/BX59Y2100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f61a75ed6477a8cf29bc23d27eb36cc7ece2f2f7f55d99f650f8179b9ae4b68. 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/BX59Y2100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ae774b78d0b88004f5ffe802ce40179f7f967eb84d501423bcd79282db6aa36. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/BX59Y2100006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7299831736a49793fc6dce3c1de0b87ec930b57257bbd87d0d37ae053cb9c0f1. 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/BX59Y2100007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a049c62fcc6e6326447063c42cd22891db486f716c45373b80d785da544e534. 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/BX59Y2100008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa70ce59cd1eab621496594515906fab6fcab9fa242a29671522108fb21c702c9. 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/BX59Y2100009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a81db7a3a4d7daf332176bb04dfbdb83bc50c978f9a3a678f5dcddf11d649d4. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/BX59Y2100010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5d4e6e8660ba5b7be5e10b63aa91399ee14bfdc95da6dd29109160a196cc147. 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/BX59Y2100011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3655f8fc9291f3e94888d14039abe91153ae9e0c05eff52c637441983137b3ff. 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/BX59Y2100012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c49f251ad1f73ec926b487d4a1520aa2fc3b843643e2e40180b7042c4a37679. 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/BX59Y2100013.
10 Anos (Feira de Santana - Baile Surrealista) [Ao Vivo]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa991028f95a791a0acf4fa1b98052faff17e0e4c59f84ba4fd87cef105955e46. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/BX59Y2400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d99b3895a957c0c660ecd455c90af89b1db6874bf6953168f8dfe445a5aefe1. Chain 2 (Bitcoin): anchored in block 958834 (2026-07-20T05:55:47Z), 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/BX59Y2400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08e49fd623370bce25ac9e7f4710a64ee574e9c89363d53c2f47b4613ddf9a96. Chain 2 (Bitcoin): anchored in block 958816 (2026-07-20T03:51:05Z), 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/BX59Y2400008.