Bluhm is a surname. Notable people with the surname include: Brady Bluhm (born 1983), American actor Heidrun Bluhm (born 1958), German politician and member of Die Linkspartei Kay Bluhm (born 1968),
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 0x8df3bd9546c3368889626f29dc8d48e7dd6be6f55dfc2a65d8e7da21ae260fed. 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/7522c19d-f6d2-47a1-b14f-3de8732cea24.json and https://artists.proofprofile.net/proofs/artist/7522c19d-f6d2-47a1-b14f-3de8732cea24.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 0x1d83a0d0f3106df2f70490d4904d2be32cf049fa2c7e8e3bae211530389fad00. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZTAY2288855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9c1214ec380d4626cb7aec7b54446bd2c2346a3e978f92b07386e420dc24c7f. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZTB62306804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c5173c462ee3257e4e0f3efe6deb9545277e32f85730d85e6b2e943e5611d28. 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/QZES52401674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2946930379b83fc735db6493719cde5e107861c03b33919ab2b5709cc590a6a1. 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/QZNWS2445677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd577b24ee44e00e31eb9625f24e55b79a319ce06e8654b6c52594d58ff497a98. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/QZRP52429144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcf3f9326b9b9f4d594a46a32d03d91b95cd7a4e690ecc8d25215e581426478f. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/QZTAS2413944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a1e9f7e1ec2df0a2c2f78c10b2ab118c6e4658b601e3e78cfbd9eb7f2229645. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T05:02:52Z), 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/QZMEM2475287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x166f047ec4f0ef2d0eb2401b888b610d207a494b82bcb29e1e72affd72966c6f. Chain 2 (Bitcoin): anchored in block 957587 (2026-07-11T16:48:26Z), 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/QZNWU2453903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6db547f5c3e9e88670e710133d1f63b9fdef23ecd6bf3a790ca9426771ffebf2. 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/QZHN82448142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dece5aa42bc1017b5afaeefdbdd7da0cf758b2b393a224dd014ded8bd4730d6. Chain 2 (Bitcoin): anchored in block 958473 (2026-07-18T00:52:36Z), 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/QZZ7K2419144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc95404ce32c682adecc4626592406c56588b78c04fa205ebb52f719253a4ad04. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/QZES72581556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x315964b8c05613ce16baaa3eafa7bb5f823b3d29fa86eddb8dca87d492bf98b2. 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/QZK6F2558305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbef87dd1bb050956288405de43119c02cc67d80cb0ddd5b77a5b65b1941a3229. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T08:02:12Z), 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/QZNWW2517913.