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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15a817f4bbad9cedc1fada41994ac6903934e9cd32a4f594901cee888725a079. 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/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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21dcc4bf2e31a14b8f07820915848151f8894ad3b770e15f2de1ca87ac2edaa5. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBASH2267801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce865ac13e8ea4b9ae7c542f35fa23a92cf3a702ab21abce0bc536504daef24b. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBASH2267803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f4a4d325667732cacc1df29dc558cb95112814038c4676475034ec6dc57aa88. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBASH2267811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x885c559f2b39c4ff0d53d87308ca5389bc4a188dee1c7c6783e0f56a7bd9ced8. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/GBASH2267802.
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 0x4c06ad527bd4f5fb1230336c7d23e358527fa4b5579e5d6b98cce0bf6b8b5516. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GB2ZD1127004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c0898ccae2059e37a85d962e5e28aeed08b42f2e69371ec952de5084bd4c5ec. 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/GB2ZD1127006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d50825da1774e5bd394ccb2dd8baad55f821f99828458c28fb4347d1d7094b8. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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 956351 (2026-07-02T11:38:34Z), 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 0x76ace75520cce2d8a0142f33b5f3ff9f6541537ed986e26d90bb144f53228e2d. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/GB2ZD1127001.
Sounds of Harris: Moonlight on Loch Roag
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf09e5e7100450e4f513c88f341a8fbc0a991b6c21fee68bda5bd7d1aafee57e6. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/GB2ZD1127007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdabc4856bfde5b5264888da31d522b922ec9fc9efc0e591726a4e2d86c00a9a. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBFPN0608002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd37e31629363469c7f360fddd2947e7ad5b391df7b6ae75b00672abfe0874af. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/GBFPN0608003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacd4595c47483909226b2e937c2c23532d95748a69eda8c1149debe9f4da019e. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBFPN0608006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3920b62802ccf5888e41fb291f271fe9c47dae8b8e74f9569bc396ea5bdbda8b. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/GBFPN0608008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6310a6b0494c39365aa912c72e3ac26524409a8d78d6341e1b78f71cf6ce2bb. 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/GBFPN0608012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fe48c6cadf6fe8b9c08b2806577c9a85253e392e81b3035d6096bffc4daaf5c. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/GBFPN0608001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab581303d6ece76573cf8c3a34b40415a0184f1d45a765008eb7fb043cf4bc4c. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/GBFPN0608004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe311444c591961b865039dfab36d8dd78e896933a1476a50c413db6740481616. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/GBFPN0608009.
Nothing Else Matters (Arr. for Vocal Ensemble)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x958ec6c2dc1027738401b4c342c4f16dbdde0b831d17fd21c40de3268a2b15c0. 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/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 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/DEA891400460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3311d0a7a1def7648039efbc0c6f86c4bbc66eab24da93733614876fa39e21a6. 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/DEA890900050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75e08b27329d8c4321b5d0cb964421f4a7087dd9822bd3f30f0a11fb054e996c. 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/DEA890900053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1e446cba74a90f1bd3a3a324df1a1f58794237393a7b7c4b9700e6fd20b6165. 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/DEA891400462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a22ecfd76e25a58891ddc5d864da0e45885dfec586e234822fd2f3cee62a426. 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/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 956312 (2026-07-02T05:09:12Z), 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 956312 (2026-07-02T05:09:12Z), 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 956312 (2026-07-02T05:09:12Z), 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 956351 (2026-07-02T11:38:34Z), 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 956351 (2026-07-02T11:38:34Z), 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.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d5f60fc94969066c08ce1c2e161bc60e59de1f90cf5ab10c8ed5d56012c76ca. 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/DEA890900059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98febd557abfc63cc04f26b598f87de8b1860903695d9d3659f901f71bb23b63. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/DEA890900051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb00de704eb5cbbcc9d3f6cb8fa3d374dd0c79fada3005415a695f3df9324e216. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/DEA890900061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cdc9370fc8ccf380310f6fd5de30f31ad972abb09c8537df7a71af44786f731. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/DEA890900062.