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 0x2ba85ed8802e43ab18c0e654c655b4f0847fa1eaf2c6882687bcb1fcf88875cd. 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/b4e88be4-0ff1-4261-9cda-8900cb8d4846.json and https://artists.proofprofile.net/proofs/artist/b4e88be4-0ff1-4261-9cda-8900cb8d4846.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 0xe1d36a561dad8cc8d340003df10401d36335fb663ff7ddbe94a47b873d6ca13e. 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/TCAFU2180352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00a52eda8430bd27cb223a79d7ac097460b878f7a630c858a680124ec7ff360f. 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/TCAFU2180356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x775713c0917902f8a1d2daeff44659b0cc4a6ba0c6185687278ad9c1c66de379. 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/QMCE31801734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbcf15963f57a16fe2e5541674954b632bea555a30dad209d4db3460bfd2897a. 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/QMCE31801735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x964ee7f8cca36e2376a4a264d76c69b68bba8fd2a653d78ab358e1f58e99042c. 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/QMCE31801736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb85e31e962a35f5aa1348b2398f2ec98b79ec03045d261b58cdb643ae4d594e1. 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/QMCE31801737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63017e8d6b61774d6db964b4a128f9fd9bdaf8f5653f9cdf4a90af864bcc164e. 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/QMCE31801738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3d6d0dd18d418bf5fac58eebb27fcc0138e6678e5f59fb06ba6170e2391922a. 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/QMCE31801739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81b9a1c0bff7ce50c251255526211856c80083baefd3d38e0061f1b263d686f4. 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/QMCE31801769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36f0fb90397fcb7a698fa39ea95819ea824aba165c34699115ac0229e182d4cd. 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/QMCE31801740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62456d313398638248b15fa3094a39d9ec30a2ec3dd149d9f49ef319177c4234. 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/TCAHM2394245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fdfaa5460eeaaf7496ff4215e6d15c105187748fc28b6273696cb08af812f0d. 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/QZNWT2387745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7819edfb59c4158b4d14f1a250abaf15c10ba1fb9954f89c82af0902f93314f. 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/QZHN92344674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5de4e586926797524138559941b9d30ad9adb3b73d22a7013be1b01fd02ae57. 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/QZS642234551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6215d3155b7252e2c90cefff9e2cccfa90b48feaed87ac0dbe058c7726f32776. 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/QZMHM2283158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c1620662ba60c70edabc375c9c92ae5bd7409576c0976e747601716ba8e527f. 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/TCAGD2257694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1f2a54eefa7dd368f4a1370f362a3c5ce4e8f61689464af28e40be32982f470. 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/QM24S2106355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34eeb2dc90e7e772ae351d2c2fe2fed93b83b10fa49521b4f8070bf5c6b1dd02. 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/CA5KR2170015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b0eb4e9b149be1d6974d5118cb3fe6d6b9edd96ad864bdd5c43c12d8d41f015. 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/CA5KR2169582.
Antisocial Butterfly (feat. Paris Shadows)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83bae29a11af78a9573f5e3a5e8e6d734497a6e2ac802785a0b36751313d3ccf. 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/US7VG2193352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e3e8de7a5e9cbf68085d93820cd0ff79e0632c5879207e99965363b0e2846b8. 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/QMCE32000534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4ff780bbae33be5d079493ae7160100e3c4ac5425d3e023e5a336c8ed40406b. 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/DKUM72000202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6958b6e368501f982cf260434a256c8d07917176ac70d40ec8ece31402222b5f. 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/QMCE31902466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42de961a03e6572d457f141072e2c16a5c7e2795b2b4b21de6b71a27053296de. 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/QMCE31902412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee09730d935492ac6113ba846871268bdf0749c5d7863979304df97c4d2e4f73. 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/QMCE31802055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff835e5d7beba02b05ac41bd178a09946441be77fba6581d529beb6358f30415. 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/QMCE31801698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95dce89363b975474ba1898c56b97121205ea909ed7b511e5fcffced82a2fa74. 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/QMCE31801699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43a52557a8087923c58b6dfabfac30b01fe318ab3099a0a6a177fc700e34cca0. 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/CA5KR2092302.