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 0x29e83a4925a977020a445eeeffc8277d6075322cd22a9f80d6b4327dd660ddac. Chain 2 (Bitcoin): anchored in block 953592 (2026-06-14T05:36:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/050b9e59-31e1-44a6-a248-bed7c8ad382e.json and https://artists.proofprofile.net/proofs/artist/050b9e59-31e1-44a6-a248-bed7c8ad382e.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 0x3b92de48adee1325ec7b86e2a8ac479680068e7e11938478882eaa46b42eb7f7. 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/BXN6N2100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e333ddda46180ba14ab0d6b317e29df0b79009c4c62a42ab6e2008153fef9c2. 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/BXN6N2100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16d04a8e1461bcfe5c129a09a52a986485a73e6b9e3c50a9d02be44c49ccb6d2. 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/BXI7T1700002.
Indy Naíse no Elefante Sessions (Acústica)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa579226cc4f58ebc798b17986215daa135e5d7da06d5e06acee23b47d047a71a. 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/BRCQE2100033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58af72c5a50029862d5fd72339ae4508552dc24c773777d8da7b75a71972278a. 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/BCOO82100024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc825f768d39ab677f3be62adeb531f1bdb1f160716c3642bfcc58d731134b318. 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/BCOO82100018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f9084c98639e310c17580e36edb164c001f8347cc7d29628acfc7db42d8e952. 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/BCOO82100026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a19bd097359f9eb7bc525bdddefe90647fde8e7dc8c2e00500b92f18c95d8bf. 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/BCOO82100025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa95eb3c8d1a7639d250f11933d2edd0c95c463e93b53346371923637d2f67266. 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/BCOO82100022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x571e6fa6c3e6b1c882c4c5cb15c18c994e882b45922785b5eb3b60cbd6dbb838. 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/BCOO82100023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbfa3c674204f6455af1fd9cbba3b8265038b38ca4071131677c98b53f3116d6. 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/BCOO82100020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x090aeda6f90f98066b202db73e2642c6399ed73a0d486396d2d9a2ef61b0a735. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/BCOO82100021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x408d82e958a1e1d40b7ea386991e53fdcb9981f3963e482c082d0472c27b1b36. 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/BCOO82100016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24194d87027c20c8290fc94d977ec673c9da81252f94b244002ced1b75d3b95d. 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/BCOO82100019.
Quem Sempre Teve Tudo Nunca Vai Entender
Encontro Com o Mar (Ao Vivo Path Independentes)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc40d05963d7e173d2114501b9ba8f6235d6c25510fc6d3d838ff97d64c54f504. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/BXSSW2200283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e09112defc6e7e83f8f5c0e5560d1514450d2ac1e4849df4455c4865b39ccac. 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/BXSSW2200285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd1ac3d0b53a4b9307e4908ccea3d36ccf5d9211470499cb4dbffc1dea185c10. 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/BXSSW2200287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c054cdd0bc1b16c855fb80e7abe4b1279140d58905e2ca03078b1e085c01ddf. Chain 2 (Bitcoin): anchored in block 960300 (2026-07-30T19:42:40Z), 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/BXSSW2200282.
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 0x0abdf9f046c215ac718f6a973eb2cd0fec04cd419d5e047da15a063e62b65afa. 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/BX09G2100001.