Jonah Tolchin is an American singer-songwriter, musician, and New Jersey native. He performed at the Newport Folk Festival in 2012. Tolchin released his first full-length album, Criminal Man, independ
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 0x5587b8441f91739ac3044d672674bb8129c1047b7d0c54d03960ea9a8052731d. 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/00396d85-f024-449c-8bc6-c8ad5a443704.json and https://artists.proofprofile.net/proofs/artist/00396d85-f024-449c-8bc6-c8ad5a443704.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 0x61021434ebe196a7c395e0e3fe86f63b5ccd50787b367d202e9b7ab8fedf9de5. Chain 2 (Bitcoin): anchored in block 959069 (2026-07-21T22:32:59Z), 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/USY1R1436403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x271daaf764eb8b5b1966cc1edbd2904d1fe35b7084259a064ce7dab03b060df2. 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/USY1R1436404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8c99a315b8df1a29055c7a130828f4b96716a0231c60e3c888c6698c115423c. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/USY1R1436407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1be454b2c0ea3fa1b562d53cf400342ed52463a91a84ffb9b0f92e96b63c568a. 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/USY1R1436408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x998d43d09d50b79353baee216e75b7084de6aa58604e8f490b1e99443b3c0433. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/USY1R1436409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25c78a5d916571a8ec559001acf779f2944bee7d8b086ae04e6c86a28d0e1905. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USY1R1643103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdec50e4b74416afa2aaf870031aebff192ecf748520d92a81ab2488662741cec. Chain 2 (Bitcoin): anchored in block 958465 (2026-07-18T00:04:42Z), 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/USY1R1643107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ad526b520181c28ee40e769885dbc7f0e39a14f979dc9b2d170ef145c08cc02. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/USY1R1965513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda920fce3e7e91a523e7bf65c88492c1b541d88d98fe21c74e7c919d6eec9df5. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/USY1R2177603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x377e9971b995142445835fd24eddb8720094918421bbc93c3dd79807dda54df9. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/USY1R2177604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3572ced0e34f1564f0c9441352e401cefe4356523cced72015e36ec037d55405. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/USY1R2177605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc17bf4eed886ce33c732cf1a4016209d2afaa73fa1db311a5444f1e51bf842a2. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QMAAK2315229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52297ef367fc539a53ab7bf92a2cd8b6c845b95c4c5cb1f13efde52e218b9056. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/QMAAK2315230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3574b93d70a67773325eed6a5617ed0067ab80819ae86a3b5c0212b1d5a9969. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/QMAAK2315233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf75031686dcdfd54badb11c194d08dc6644542f3f7b21d1e2c7ac4d7c389d440. 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/QZ5FN2449659.
Long Distance Love - A Sweet Relief Tribute To Lowell George
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a512801e2acc7f9905b4cc75356e8e6edac868db85c39b871d7508fbbfde086. 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/QZX8U2300129.