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 0xd3ad5eba2c0988134e293bd1bfd52beeea1513c0aae68d19a880e12657d69619. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1694df12-6c51-4afb-82b2-19f75a2d93cc.json and https://artists.proofprofile.net/proofs/artist/1694df12-6c51-4afb-82b2-19f75a2d93cc.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 0x25b2cbae1b3c0b2e1de4886df77354643b0401c7ba10f49dd72c061c1fca19d5. 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/FRZ042200892.
Immortal Queen (feat. Chaka Khan & Bianca Costa)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe33d1a3eb349473c7ac996638c410b2307078af996a2bb732dbe40f09c90a7ea. 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/USAT22404280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe85d810524488c8026715fc20d25604986af79d618ecbcfd1da1c4f8a27d6d0a. 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/ITDJ72200055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52b29006e2f515515789bf793e7e8d70be7b840a9ff5544964f2a7a897c3cd53. 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/USSM12300553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05eaff5d3e30d1d821ee0d6efa81a722f6fb6bde4609efb1c27434b9961dffd9. 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/FRZ042100243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf269798ec3b3fd5b097c943980c4d95ff35702d015e81731dff3c2216ec1268c. 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/ZA34K2100482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe85d810524488c8026715fc20d25604986af79d618ecbcfd1da1c4f8a27d6d0a. 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/ITDJ72200055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fc7977c63d10e364097a71afc4e528d9b1f6d66506db88ae5942eec1e81bcb6. 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/FRZ042201345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38663a5db2958befe0dfa698b62caa7b1cb26770caa6cf5492a4ac0c8c76fb48. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/FRZ042201547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fc7977c63d10e364097a71afc4e528d9b1f6d66506db88ae5942eec1e81bcb6. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/FRZ042201345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cee18628ade1983f875548d0e68cf1c3d9cadf911f2f7728b239efaed5da073. 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/FRZ042201548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dc0b8e33bbf18d3987afe8eb9691356b2a973d4b4f234f65a19d7923838940f. 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/FRZ042201551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x904da7e01e81a32b9a8a0c54d56dae5779db9662984b9a126480c5ac633626c0. 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/FRZ042201549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25b2cbae1b3c0b2e1de4886df77354643b0401c7ba10f49dd72c061c1fca19d5. 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/FRZ042200892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcb66920fa6881844e7e790d962e207ff4d46e480b7323b64b77bfb4df1cc38a. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/FRZ042201550.