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 0xc87866c42eb26bc1720e44c07596f72fc97bf640d20613e688c59a6b2fc4caac. 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/e83fe19c-acc5-4be0-a56b-7e8476385526.json and https://artists.proofprofile.net/proofs/artist/e83fe19c-acc5-4be0-a56b-7e8476385526.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 0x454f8a9fd503eee9f6d836cec1640a795ed67574ccff018a703cf272b34e80d1. 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/USUG12402721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09cd20255d9f06fd5ad38c89fc1727aacec3923eae634351af085c4164a1d40c. 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/QZZRJ2400012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2705e16936c1c6d1fbf1db768d712e4d2f3e178895fa376dd7c9ba8cc2e5493. 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/AUHS02013265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c05902676c5dd43e2e1719bcf795762d585e2021b93b520770627e148e40644. 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/AUHS02013139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x762a45f8b0b479609c47f82a2f2ceeabccdbe3e71ba6098ef23c8d1d2f17a10c. 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/AUHS01912467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9bca8ad6f55fa5b4597191b687514edc82d00693ed98f1d4a110cc8a40b707d. 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/AUHS01507113.
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Songs You Maybe Didn't Know I Wrote And Some You Maybe Did (Live At Sound Emporium)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50c9327cc50d754000a769abad2cb337a8331648711f907988ca27cd5f23cd2d. 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/USUG12304057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50c9327cc50d754000a769abad2cb337a8331648711f907988ca27cd5f23cd2d. 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/USUG12304057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50bd7623dc0ca0accb6bfc58dd9ca6608c33156a65c842da488f406f1e59a1ba. 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/AUHS02114668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0361a88de07f6492f0b3de43d12b79c0a026b10d4921768d8143dc2f5383f78e. 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/AUHS01811228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52a98fbba0671dbcb5e6c90f688edfad36b2e1352833ce801f564cbbf32e95d5. 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/AUHS01912334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4eda3d4d7cb6b3735e041d05f5ea39b4869398ccee11eacd039caa0460a6cc1. 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/AUHS02215305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf992ee43b469d04a8656970b41b8fcc216ae083459cc5e79cdb612710cee127. 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/AUHS02215166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ed8313c25b7ab558382da61ba0e616734950ca984225f6611fa75ebeb681cb7. 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/AUHS01507446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a76ca0b2cfe7ea1a3ffb3b0dab9cf095946737c65b563fb843ceb03522e4730. 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/AUHS01507458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf65266e45f9eed2246300192bd61b677dc0f575e8a597b761c7efc5073cf2f61. 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/QMGAC2200100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3e6b28c77743c5f05a1c15113ca12513db1ffafcb9bd00807e1b15777995dce. 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/USUG12004016.