thumb|Claire (left) and Merna Barry Minnie Bagelman (April 6, 1923NOTE: Merna Barry was not born in 1925 as had previously been assumed. The 1925 U.S. census taken in June 1925 gives her age as 2 yea
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 0xe74b6061e4ec5687a30f7784c91554998a24ad80598735da1a07eeee1b8e7295. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d9d87bd7-5d24-4a5b-9646-d6129582eda1.json and https://artists.proofprofile.net/proofs/artist/d9d87bd7-5d24-4a5b-9646-d6129582eda1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Barry Sisters Sing Traditional Jewish Songs
At Home With the Barry Sisters (Mono Version)
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 0x87f522b3725841c308144ee63e508869fa2b6f78025d052125c0ca45c0bbf577. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T05:03:30Z), 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/USRH10801903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc347a49a9dea6eebc984c6e0a6750b819773764771b0c55157013209349b6c18. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/USRH10801909.
The World Of The Barry Sisters: Memorable Jewish Melodies
Matchmaker, Matchmaker/To Life (Medley/Live On The Ed Sullivan Show, February 28, 1965)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccfac5820fabd7718c09db0d4696a9b2e82a6ab0869b8ea4b20e3df295ee6ec6. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QMBZ91943662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x646a8938ae10ad97e69d65c95b4cfa66bd925d892158f26f212790faaf1de968. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QMBZ91943663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe57b30383ce33ad8ab7a1c9643b55904e79d10eedf81d167a9c65f63af707e33. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QMBZ91943664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7cd71be1756ac2b7e0bbc7e4e267cbdca7e10964139fd2bfeaa8829e32a1ff3. Chain 2 (Bitcoin): anchored in block 959069 (2026-07-22T00:59:53Z), 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/USEEC0610828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86962fc206eefe8afa7fe5eae4feb7c18927747819627d11f8b567c5b192c8f0. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USEEC0610830.
Zug Es Meir Noch Amool (Tell Me One More Time)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd34cdad2481f901cec491e54e74f641310c2feddfea8bb397680e5dd39792954. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/USEEC0610831.
Ich Hob Dich Zifeel Lieb (I Love You Much Too Much)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d87a314acaa86c94309a12c6a566dac87949a8dd853e8e2841dcfaa96a9eb5f. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/USEEC0610834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb98972e1beee6b842bd818eb9fe92be8213b6c1828523e8f608af20c34c9aaa2. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/USEEC0610841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91f20a104f885e4bf8c9cf2a8fdb04eee4a3fd5a9464ecc2e8b37d2a1d4bc0c8. Chain 2 (Bitcoin): anchored in block 959073 (2026-07-21T23:25:37Z), 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/USEEC0610842.
Their Greatest Yiddish Hits (Digitally Remastered)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd84516ee46786d99aba25172b0d00f262e2688b381a5d20abe707dab8d7ab27d. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/USA2M0815928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ca24b5d5ead28dc859ba3b7b060c99481b3d95ce8dc7fcbb864ccbd7ea8809b. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/USZZM1010594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e13868a15504d094732d494835368524f809c5c25e3f74bc1e5932834517a16. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:00:56Z), 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/USZZM1010595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f68585fcb3ebc881f632556338108d1ec3d97585c5e25208bee3dbb4305a5be. Chain 2 (Bitcoin): anchored in block 958670 (2026-07-19T05:26:23Z), 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/USZZM1010597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce50715d5d0daa30dae6bbdf05d7f95aea8ae4e2ddca108415efc2d5faa94329. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:44:37Z), 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/USZZM1010598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cfacd509e1105194c0e0c9c78aa3726ad5b613c1bd48abfce6c7e7fe8eee11a. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/USZZM1010600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0c0a5e9b8322a6e21beaf7bffda57bbc51d45dd933c3f590d93681d5928ebdf. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/FR96X1504380.
Around The World In 80 Days (Live On The Ed Sullivan Show, March 27, 1960)
The Marvelous Mrs. Maisel: Season 4 (Music From The Amazon Original Series)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc64ee50616783d2162c17d4639f298fd92a349f429f24d7103ef180d13f5989. 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/USRC15203858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e547b5b131b161935b3c8a801f0c7a07349d3303b9073c7c4f9e271a015b570. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/USB8U1026712.
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