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 0xc0c56a637f6799ea176565fdc78dc9e0ebdee819ad93b4f5163384538c041162. 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/ef095268-e71e-4568-be8c-e1e94243396d.json and https://artists.proofprofile.net/proofs/artist/ef095268-e71e-4568-be8c-e1e94243396d.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 0x7b9aa4ec15c7a33a76479aecd63e7c5098e89cf4956f3c33fe1f85e959bfed15. 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/PLUM72200988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9d1c30baef0df15c2b76390b0d6a38c8819faf8832c98b1b91934ad85e1fd58. 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/PLUM72100221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9061184bcf4053b28347f23f9fa44975cd4bde8ecc81852e8848e5122842fc36. 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/PL86E2200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d227af68b8af4f3837da61c9f1324e8c76c9bf5f50bbfa9543c3a8ea5c0fcf2. 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/PL86E2200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7edcb75edc5e72383a78e968fac86941e8b05577b7faa307547592682de9fcc. 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/PL86E2200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9061184bcf4053b28347f23f9fa44975cd4bde8ecc81852e8848e5122842fc36. 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/PL86E2200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd726839c73cf47d0dc44c2c4b90562b10cf4d325fe19c7db25cab624c7a48e91. 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/PL86E2200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3830472bdc2c0cf79efd67f8a445e82578d77f5d136eb8d855e15e158a97b64. 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/PL86E2200009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d227af68b8af4f3837da61c9f1324e8c76c9bf5f50bbfa9543c3a8ea5c0fcf2. 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/PL86E2200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b9e11055ef96e376ebb352e6e4114e6f7520ce65553420cbad2612c118828b3. 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/PL86E2200012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7edcb75edc5e72383a78e968fac86941e8b05577b7faa307547592682de9fcc. 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/PL86E2200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd726839c73cf47d0dc44c2c4b90562b10cf4d325fe19c7db25cab624c7a48e91. 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/PL86E2200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d227af68b8af4f3837da61c9f1324e8c76c9bf5f50bbfa9543c3a8ea5c0fcf2. 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/PL86E2200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b9e11055ef96e376ebb352e6e4114e6f7520ce65553420cbad2612c118828b3. 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/PL86E2200012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9d1c30baef0df15c2b76390b0d6a38c8819faf8832c98b1b91934ad85e1fd58. 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/PLUM72100221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84e80e5b8ef450bf6077d8a77325154561597d0e64401d8f2c828512000036b4. 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/PLUM72000198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07fa4b0dab32fa37033340b690dacb06a08c34af7411ce2149f322ca06fffe40. 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/PLUM72000344.
Anti Hype (feat. Marek Pędziwiatr & Piotrek Lewandowski)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5244444b7f97c9d078f79f7a90ed02495336e1491a301c9cd22ceca41e1d7d8. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/PLC071407005.
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