thumb|Mulvey at the New Bedford Folk Festival in 2022 Peter Mulvey (born September 6, 1969) is an American folk singer-songwriter based in Milwaukee, Wisconsin. Since the early 1990s, he has developed
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 0x3a6afe3b5ada2e1b3f739bf8135bbf2b605e38ed199ddfc7c2b92643aa8ebab6. 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/36c26cd0-cd7f-456c-b354-4931678cbff1.json and https://artists.proofprofile.net/proofs/artist/36c26cd0-cd7f-456c-b354-4931678cbff1.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 0x45e9c485978bfe6206efdb32a160c2f5e9732a2f12b3fb1b15fc3be7f6a51c6f. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/USFMT0408301.
Sad, Sad, Sad, Sad (And Faraway From Home)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc62510f3d4bfddcafaff37d0f3042d5502fcc14819096c49576b162951f73ef6. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:25:19Z), 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/USFMT0408313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x093a9f3ea576b9b8568e06d7ab251b3b5510b4e7f57d0be423c50fe3febf9b07. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USFMT0902301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0732b719c701f838f21d7eaeaa50b207d0d701f39e20e7cc1c4a5661b3c4e1e9. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/USFMT0700806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10cd458ba3402f407926ed687e759fe18a3247ed358f1498a55c375548bf35ce. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USFMT1406201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61f8350029ce00ccf7fd4caa2f88e6b19cd710705639be9ec512aa463de05fb0. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:02:44Z), 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/USFMT1406206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9b9f5c789dbf4bf4708785a26ee7b66975971025d1fd99079bab51a3a7c55e8. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T15:22:43Z), 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/USRB41800022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f52890ca155253ee59a43417356ab80f4f25e58176b8f3baca218d68b664b02. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/USRB42210704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb8607fe04a6fb7f5ee0feb30bd744532cb3893242b5029992136c6a003bb221. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/USRB42210712.