Jeffrey Arthur Berlin (born January 17, 1953) is an American jazz rock bassist and composer. He first came to prominence in the 1970s as a member of the band Bruford, led by drummer Bill Bruford. Mus
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 0x351686902478d2bf1f0592283aa1b8b2d81d62cd0309404792f8d7d58eb82fb1. 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/e2cbefe3-db91-4834-b6bf-10c7e45081f1.json and https://artists.proofprofile.net/proofs/artist/e2cbefe3-db91-4834-b6bf-10c7e45081f1.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 0x606b8d916a606c75c863bc1f796a480e08407a6be062b6e6f5c034530fdce3e7. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/USSJ19900031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd467c78a5b51ad2bebf33abf8a68a70f47a3a7676fe825fe52a1f06b1aa1e112. 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/USSJ19800031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a11b24f4341527ecccacaf33ff9f4cf9544309b32d76ef69c46e8cc75d027e2. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/USL4Q0878596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d3951fac19123bda679c7a79ca686a72ec872615192793b21f7e076aa426204. Chain 2 (Bitcoin): anchored in block 958218 (2026-07-16T00:33:33Z), 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/USCGJ1052983.
Joe Frazier: Round 3 (30th Anniversary EP)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21da47fdbeb83521c03f5d4531c179cd648324ecdcee298fd991b04f4cd404c9. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QMEU32212988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cf31269dd7f647f24afb0933546900e60b1eebaccdbfea4f89c419f308508c8. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QMEU32212989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbce74c018af8d0e2ca35da10e5514fafb5fbb82f311f19411fc646482c704e80. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/QMEU32212990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc758dfc8f1cb00ac7ec05d128c98b0348a281e53292fcba882a528dd4ac2b6f1. 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/QMEU32212991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb08c7c8f283bf5184bfdf3a26fed2f5bacef0a142717fc85f9d7dc1db3e360d. 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/QMEU32212992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ccc54edf527e538d8474900a5f9819b2e5eca2c5edb4508541c024e20407afe. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QMEU32212993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb755cee68ab421585fa1776298eafa3164a054a663c737b6fea0aec1ed8440c9. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QMEU32212994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x915603dd965ea377fe96b9e07ee5d70cb074071d69c039991b90022a87ac63d5. Chain 2 (Bitcoin): anchored in block 960222 (2026-07-30T07:48:45Z), 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/QMEU32212996.
Drum'n Voice, Vols. 1, 2, 3 & 4 (The Complete Series)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb538e0aeb8eb2c28d8210e3ac8d47626c00ef91ac2156519f27aa4c8335962a2. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/FRX761516778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68d5cb37c1d02ceca615fc870a79050d8e57b186e0ef5886e9262bd9f84a1d1a. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/ITD560202643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf79f261c004fdb02f7a84ac53f53d24ef4a38db3959008e0a5ac72dd5782f555. 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/ITD560202648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa7b3252aaf2d89a8eed9551d7502d88b96bffaa5125f64217e793e1b1e09450. 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/ITG5H0100021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8854386dde3491764ec1d0d86448a083aa7434e834638f5a9b927cbd2127caf. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/ITD561200564.