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 0x45c523d9b43c95706406bb54eb8242a67a06ba20591eae3fce7641f5c74f906c. 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/46ac84ba-0810-4cc9-877c-e6c1856e0256.json and https://artists.proofprofile.net/proofs/artist/46ac84ba-0810-4cc9-877c-e6c1856e0256.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 0xe3fb73aaad39d534d9afb2f8b1a91e6da513435deb28a9a4f248ef0ec50fc205. Chain 2 (Bitcoin): anchored in block 956482 (2026-07-03T10:33:57Z), 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/DEZ651109262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55081791c5a6f82c6821ba36de70398bfd98d55918164797f6586f194130428b. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/US7VG2362317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9defac63254c0a5c47cc3656aae4ac77c47b632bec262e0e2a22c340a1a539eb. 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/US7VG2362320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64505f0352e62b9b00069200d82d619cdf41774257f0c2f0f42665a45615a6e4. 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/US7VG2362322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78ce97cc4a1fe1a6ada12b297251a9da32a4144aaf699aadea928f13d6fe5211. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-19T22:59:45Z), 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/US7VG2362324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e64ebd340a369fd70b7c5d4d36b7879a060278ee367be9dc051b32565443db0. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/DEDE31512501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc405262f7bc39c364975178ac525dc9d5834ff780bb1c7a759ee05da52f1b585. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/DEDE31512502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x638a5b7e94ba305bfc56b66c48a2fab37c78c284c7f7a159aef4309ca1e48e99. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/DEDE31512504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b0af4f8e18b93dc1e1ff168cf9a409bb93529122ea0bcb6c0ac58036d6b3622. 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/DEDE31512505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7ca6230f17f688ff98e84c600bb00cae6fb3648b91cbf87fad2e5fee527527c. 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/DEDE31512511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4eaa4d67c6d6dadd51300fffff1e68364981ad95031a089e172079a03cc303c3. Chain 2 (Bitcoin): anchored in block 958083 (2026-07-15T01:50:31Z), 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/DEDE32422301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf08ea0d274712412180eedc09c23d8610e359dc0675962249e9dee72dc29e4bc. Chain 2 (Bitcoin): anchored in block 958992 (2026-07-21T10:12:17Z), 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/DEDE32422302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcaddcabd2c9e84c674d6fed854d8ac5a18fb44550c114ea34e762e58f40cc06. 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/DEDE32422303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x562d75edce20abd1b423a177d2ed0e68c30e4f960678286beb535b8b07c13e0e. 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/DEDE32422304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ae4fcc711026bffe9631853c9364b53764f6654ad6a68b4278e1830e2de4c2d. 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/DEDE32422305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6f49366ae7fd10a445e07f388fbcfbe682b2395f6bb617f26ddcc76c7c4f2e8. 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/DEDE32422306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2230b324c36e74d847a1739ca0e6641194337536101153b2fa9b1c361867ef59. 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/DEDE32422307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7991c1342257435f438e08e20731f26402ded548292a104b7498529d74aa71e5. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/DEDE32422308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5af994a3818ee03fd9ed6d66a6f9b02515ad9421fd0c2f9034ca8773d3d0c225. 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/DEDE32422309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e01cdb2f10998e36b8537e675bf31ea9fa80c553e68dab970f24057dbe3eefc. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T06:33:30Z), 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/DEDE32422310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec5df5fa9a2aaec65692fe1b4974b92f5619665d1fb8c92b809214db6774c24d. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T13:20:46Z), 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/DEDE32422311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb831b4ccfd12637bb74ed16b4969d84dfd9d6aad9408f690d1e239432bf43f3. 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/DEDE31513005.
Die Geschichten von Volxsturm (Akkorde unserer Jugend)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4574793283097b01686d02732e819e0bd4be57ec359237d74d12e2c532fbf17b. Chain 2 (Bitcoin): anchored in block 960277 (2026-07-30T16:10:47Z), 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/DEDE31819525.