Cheryl Bentyne (born Cheryl Benthien; January 17, 1954) is a jazz singer who spent much of her career with the vocal group the Manhattan Transfer. Early years Bentyne started singing at age 13 with h
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 0x9c42dc76ad22585325014aa87a67f47225e76ee5abecb3cafe09afb416a06b20. Chain 2 (Bitcoin): anchored in block 953657 (2026-06-14T16:43:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4adae9e8-d623-4aff-b9e5-b6425c57174b.json and https://artists.proofprofile.net/proofs/artist/4adae9e8-d623-4aff-b9e5-b6425c57174b.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 0xe38508dcd44c296794825a25a685dc6b91b31001e1a8b8e970cd10cf242e5d02. 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/QMEU31809846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd65440eff0be649a421d9f718ab33a3597223ef569894059d7838fedef226a83. 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/QMEU31809850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc3976b733147835b05ce8127d97617d6b3cc2a9d91ba8deb4bfc30a4520af98. 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/QMEU31809854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf284634072a61e7ff13343435b8027987d6a078ad74d84bb91475a0f74d6ac4b. 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/US9931301847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c949e198c7fce789114691943e5a39f8d745d11dfa3a41c74d0061915f4d271. 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/US9931301855.
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 0x13e06f3afc7daecdc7218d7a4ad87bd82b8a35f660c48bc007490af24bb7a59a. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/US9931301857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x233e4b4801291541258015c08d536f8269bb534405d25ad1db50d292e5955122. 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/US9931301076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x050ca22990c0e757dfaafc62ca2c1df8aea06247fa2e105c881fd4a38b1bf20d. 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/US9931301078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d5d419d9a096052ce7ae4b3f138ce55287e5f88accb2039e33602cce4ebb0f3. 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/US9931301080.
Route 66/Alright, Okay, You Win/Straighten up and Fly Right
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x510a7560a46f22831a88a2c0f7150d2662e058e800417e3c7c127bac67a8a627. 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/US9931301082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc28ac51a136044394e062a730e440969ee78d26ad37de2a7ef5c4f06ac5dc8c2. 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/US9931301083.
This Could Be the Start of Something Big
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37f6b35bbe16aa77f3cfd19fa97ac71acea337778eff5212c67713c09a727dec. 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/US9931301085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47d348799a01bbb48e18df4f5a8bab2be8a1490380a39195df5bbf4b2eeaaf9f. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/US9931301077.
Let's Misbehave: The Cole Porter Song Book
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f104a4b4f509a7875d64d6c420749c0012a12eb62cd29df812d750fe98cd152. 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/US9931200233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7f63993e45e3ebd968ca29831bb19a357a26c8d47f00eee3b35a2bd3cc82cf7. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/US9931200235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd92501ae5f640463558cb929eb140b4978744b6d7023d3ce635f3be651d1847. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/US9931200242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbab385107b8de40d70e31abbfd079c644c8169a45c8d05ed457b8e4a775a428b. Chain 2 (Bitcoin): anchored in block 960106 (2026-07-29T12:41:21Z), 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/US9931200244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42cc53603cb97e040dc5ac8423f1fae254b8cf5da92099418a5dfd39ab60d1e4. 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/USCGH1317731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe44f0f604381dfe858cea93341f278852c2a0ab5bc779c12b634234e41b13d3a. 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/USCGH1317735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd44facdfc8003d59b67086a4fd9277dfaa3e88d885eb74833bf3f35482507f8a. 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/USCGH1317741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ffadaccd63145f37440d21539ee1d4611ee9781f03e7c01f7ab1b3c3c7ac8c4. 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/USCGH1317742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98d8a6e7c6c33ac81ecabb798557941440272deaf9e5ee99668ae85c48e073b1. Chain 2 (Bitcoin): anchored in block 960384 (2026-07-31T09:54:03Z), 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/USCGH1317743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4fc64193d7ce933df563a4153b0696d948235b830f8b2d0f86c30c6b20716e5. 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/USTE10460606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cdb81c7f1dd4663aba4fec5fb1441b3e277fd6b6ec69e3171cfd06f515c4478. 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/USTE10460607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb78fc99abd16a3bdba11c492db32cd3ae5ccaadebb51d6edd06bad48144e95f. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/USTE10460604.