thumb|right|250px|Parricelli in 2007 John Parricelli (born 5 April 1959 in Evesham, Wychavon, Worcestershire, England) is a jazz guitarist who has worked mainly in the United Kingdom. Parricelli bega
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 0x15a817f4bbad9cedc1fada41994ac6903934e9cd32a4f594901cee888725a079. 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/05999f76-64a4-40a6-ae3d-f1b0bea97bf1.json and https://artists.proofprofile.net/proofs/artist/05999f76-64a4-40a6-ae3d-f1b0bea97bf1.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 0x3c0898ccae2059e37a85d962e5e28aeed08b42f2e69371ec952de5084bd4c5ec. 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/GB2ZD1127006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d50825da1774e5bd394ccb2dd8baad55f821f99828458c28fb4347d1d7094b8. 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/GB2ZD1127008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca17b10c79e83a013d5b5be195e237336dbff7b60eff76e69e2b3665f98952cc. 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/GB2ZD1127009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6310a6b0494c39365aa912c72e3ac26524409a8d78d6341e1b78f71cf6ce2bb. 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/GBFPN0608012.
Nothing Else Matters (Arr. for Vocal Ensemble)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x958ec6c2dc1027738401b4c342c4f16dbdde0b831d17fd21c40de3268a2b15c0. 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/GBBBC2301813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e77a7c1f21d39ba558f599c2d4b5e4c3c080cb190ba9ab65ddde2f3450b3dff. 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/DEA891400461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x476a41df6ca13c1352f9fbb11fc8dffb58c6a7294709887d47a5f6fca64da5c9. 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/DEA891400464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a7516c0a76a4fee1c87e83ce8b181b06a50b43bfd5de2f2158c412b99fc7ef3. 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/DEA891400460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3311d0a7a1def7648039efbc0c6f86c4bbc66eab24da93733614876fa39e21a6. 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/DEA890900050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75e08b27329d8c4321b5d0cb964421f4a7087dd9822bd3f30f0a11fb054e996c. 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/DEA890900053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1e446cba74a90f1bd3a3a324df1a1f58794237393a7b7c4b9700e6fd20b6165. 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/DEA891400462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a22ecfd76e25a58891ddc5d864da0e45885dfec586e234822fd2f3cee62a426. 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/DEA891400463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c7c42f75173eeb5863261386e61b3be290b09d2534a04afd62b1a16271a5f3e. 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/DEA890900056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79edd5f861f827a7c1735c13c427cb827b45a041937983cb9ed17983088e8d95. 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/DEA891400465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89badb9135b374ce01beefc5f9798c3cb01543da9ac2ce466510c6be53ad9c0c. 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/DEA891400466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb0b4306c9cdcb57899f22a738a2faaba2557d648761893aa440f7517cd1586b. 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/DEA891400467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1696b542c60e7801ca40edaafea272bfd0b489ecfb87840dfa0df2c2c3b1f260. 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/DEA891400468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77eb81683c600ea835016b2a866f671c70a4d4326bbdc39c8c5e0fdaa8f50185. 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/DEA891400469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3626b6f2b1af63d21b19bcb2e8ecb76c9c5601bd93ca93d5e6dff8c9769278e. 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/DEA891400471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16dc9aaf67afe431673bfeeaef4548650369b14ab68c077c41ce29b37f279d6d. 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/DEA891400470.