Rothstein is a Germanic-language (German, Yiddish) surname of several possible origins: toponymic surname from a place with the same name near Merseburg; from a Germanic personal name, Hrodstein (hrod
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 0x0f23f4eda5ed4b1f95dd8015b842605a13b4cd05269bec76af31885af1f580aa. 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/35d029fb-81e4-430c-a3b7-597705d2e7c1.json and https://artists.proofprofile.net/proofs/artist/35d029fb-81e4-430c-a3b7-597705d2e7c1.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 0x0ab265bbf1f0d6183a1d6e355943eabbe00ede53e5d88046c5aeef213e1bed9f. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:30:50Z), 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/US7VG1701279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57ea247a2e0489feebdd8ec7011613037abace0aa2dcffbd24db524d720eccb3. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:53:52Z), 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/QM24S1703047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ddc2f2b79a5d8f5b02d461098735fd7528ca2a4597550dce95f9160d87a34b1. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QM24S1800608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb971ad52eaab8a6562c613987c21b96cb07275ac8357dd9a0c4f7c69732def47. 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/QM24S1809468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb971ad52eaab8a6562c613987c21b96cb07275ac8357dd9a0c4f7c69732def47. 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/QM24S1809468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e887ed08ed877ab80bf99fed5d16766ad419ad1d329ca7da68f98d7e93b715c. 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/QZK6G2184361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4afefa420fc335e5a9c92f1076767d80bbb7effcdb10913c36b29bf47d7e6ab9. 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/QZK6G2184362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf58e268df45437c1b7489da36c56a8ae865b0317ad9f6d40483833924c44b956. 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/QZK6G2184363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31e5a6b647a9a75940ecb5ce2f2928a28a64981543b5550af8af23907b6dbf21. 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/QMDA62251910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dd43c22de1b3aad7c1cd020ed09edc3009f9ddd6aefdd234e96e51c6d061a82. 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/QM7282317040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4310e1beb43262e0aa41f2d79c3b0a5fdfd7f75ccf6781e3477abf239d7e0978. 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/QM7282322468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b898d272f0cc103f5e5a42f33ef92a00633cd5dbb8d0c1f375fe4edc564b2b0. 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/QM7282317043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8e24b2573ca6e8fa08647dcbe5d2eafa0cbb749d00d3a3b7a5008e54ab35155. 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/QM7282316986.
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 0xf1e8b4ebd912c0ab7d738be17798b94ce1714de362d5a75908760b618775e4f0. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/QM7282317008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9edf37d698773b96671536a9db61c1d85fb538b5c0c5dd32ab33f1c7766338d. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/QM7282322470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12b603ac2dcf3393b0c2d9e8e0f93ec151f5722c904251ba4be6ab4a9e1f9689. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/QM6N22332462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ab304b83ebf86a97b6a873506821e56d5b335cdfbcc86280db8c0ef9208f479. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/QM7282317041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71ed4933ab31330beb1e0a1b3893255a817b6057c0d17a738d35dcb5d3fe41a4. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QM7282317042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fc69176c4323b0a9290e433dfb0c23625d886d780ff507cbf75eafe560c9c42. Chain 2 (Bitcoin): anchored in block 960485 (2026-08-01T00:10:46Z), 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/QM7282317044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd16ae623d0fe950c537a6a1b6531f2d86fe9dc2c78e397470299c40f1c5c062c. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/QM6P42392855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x834f6a31df11bd4fb3618deb2b41eb8e38f920620cc01e52cc0851478089ac16. 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/USA2P2126454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef6ec102bff12809f8870c1d4dd33041889fa45aaa331630864c6cae319994d4. 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/QM24S2201621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58a1e76b0dc7236ccb7bb866a43da986f2e06dbaf896d74858d278d9597b46d1. 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/GBRKQ2391344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbabb8226b0c0a294d592b1117488f819872a918d24739c47c9dedba0c461e3e0. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/GBRKQ2391288.