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 0x2b3c0a18fa5f80e6c1f28eb661fa81fd12eec918de4f816d50c44bc70bd48642. 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/2d012387-bd62-4dd6-960f-78521557bbdb.json and https://artists.proofprofile.net/proofs/artist/2d012387-bd62-4dd6-960f-78521557bbdb.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 0x4b1b74020c8591ae26a034bd75b6d9021fd094ece2cb4b717d4b2025ad8e6cf9. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/BCD592100037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf19d2817dc386707d9cb557544241396582e97ff7e22c1094e73161e1a864fd8. 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/BCD592100038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94b42c66c8020b82e093e0588ab83956af5b9cedc14763e3804a91bcadcda5b5. 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/BCD592100040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76865e28463c18bb998d03869919e268fb77827af54cd4428319cb5e09840bec. 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/BCD592100041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe17baba25ad06b917ec40df9850d7369910b26070ec63a9d87b8f1fc4f35357. 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/BCD592100042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28e440ea17a0ff2f1103e7aa1411cc73b634b158d7543495443a88091e6c9430. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USLZJ2106226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0e9ad3d19dd641444afe638148935f2e6775c52243cdb64cbd0dc3fe9ebbe34. 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/USLZJ2106233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc18d8c671d190ee376fcca2191fd99038f8b19942ce4708a3e7aad240ec0a78a. 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/USLZJ2106237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1139cd4af3bc0b11444b3dbf0c4215e5e9fef269d0c28f4de40e84a17f2c54c9. 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/USLZJ2106249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x826e53be474be79628a18b73d65cf4f40ea5309cf77acccbbcffc9e87aaad6ce. 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/USLZJ2106250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x008490ef71ffad51a24c20b0f5617ebc79a0355b88e7559d2a15af51b817b92a. 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/USLZJ2106252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5478fa4ec72c889d7ea6740f95c0f94073df8e82573485ef3037f9474fd3f1c3. 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/USLZJ2106253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf93113cbc788b546db50244c43cfc853a3a4cf7064c587d6e15251457f09c2e2. 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/USLZJ2111765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x097340d522cee84314a46f0e9661985bb07bdbba4b5dcd5e9e6d39dd4ed0ee7c. 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/USLZJ2111767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad587a551470859c6098e3a7e645f23e8626ff746844e784c21c6a231a6587f8. 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/USLZJ2111773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d96404a61e13e5eace28ae1ade61f97b86e075979653763cd8a57392c6b8c5d. 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/USLZJ2103113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d4296a8e7dcd9bff6e038f4dbba21a043e23e7f71c677bbe80a3d694b9348ca. 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/USLZJ2103530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dc91441fc28188e5752b66d3b62caeb7e9ae85ab4e4d0e453519dcf18ef5763. 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/USLZJ2103538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea3a49bc8e7f8fd4de8f5647b8011406283068a9895f46ddc9336bc2ffd6fcf5. 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/USLZJ2103696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe70be4efe069ba7cb488c4b08a396d12a06ef3ba44b6e9caa6ca6046696d8864. 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/BCD592100051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd92d83088b0b5e9008e1ea95e9b5226a61c39627359808eb5af782402d9f55d. 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/USLZJ2184328.
TUDUBOM SESSIONS 4 - CANTO DA SEREIA / JAMAIS SERÃO
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3edccde4f88c29cdff1c930239d2e14196084d51f014429ff5fef175554d413b. 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/BXD2J2200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fec81ef4c41a090e7d3adfcb1a4d571cc114b51e978b47338af548515afdad9. 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/BX3292400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e0e62802e5579dd287f131c0d5a6a363f4e3a073ca99785e34e215effa00d92. 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/BX3292400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c975b0552a59a61fbe85d31bb9950bfa252e67970d94e5261f15421a441efb9. 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/BX3292400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b8ef1e14ed2be5a02c90ad191b82fef505c5fa210c9a49a445b0724b3f71d97. 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/BX3292400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce230d06e774d76bc6904de0827798bcaecd81148371590b05ba74b8771fe396. 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/BX3292400008.