Weimar is a city in the German state of Thuringia, in Central Germany between Erfurt to the west and Jena to the east, southwest of Leipzig, north of Nuremberg and west of Dresden. Together with th
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 0x6d698bbed92238268e9f0f13865632c4df78daa4c21a3a6d7d5f721bb31d532b. 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/eefe1f62-da00-431b-b9b2-81601217aaba.json and https://artists.proofprofile.net/proofs/artist/eefe1f62-da00-431b-b9b2-81601217aaba.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 0xa648b59bcf391b594c619f2e015b9dcb83aa9247551d309eede87323ddf69f4a. Chain 2 (Bitcoin): anchored in block 958218 (2026-07-16T00:33:33Z), 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/DECE72103859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x840d95d786b013963c1b184f74f41747072e3dcca729db8a6c10d944fefc423f. 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/DECE72103866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44631fba9d63c99cfd278500fdc4da5df2d50768a5bb5721817afb22b8ce2a93. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:17:14Z), 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/DECE72103869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc915413d4aa76c8d14b6c20d225353d8d9895432347568578642a9be8ef7d378. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/DECE72103862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaabd209e4fcd9da5981209d5ea2e15d20014010cc8215f81ccd479f642a3e31. 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/DECE72103870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x775cd6d987d6a00fd3d2e2b62ea35e5c0cb78ebfca68ec90e159da83ca6f5873. 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/DECE72103865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x201400534cbefe8cc85317e61b491562ecf2d42a7d71a14a53ae9d8e43ea07cb. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:24:37Z), 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/DECE72103861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x775cd6d987d6a00fd3d2e2b62ea35e5c0cb78ebfca68ec90e159da83ca6f5873. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/DECE72103865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x840d95d786b013963c1b184f74f41747072e3dcca729db8a6c10d944fefc423f. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/DECE72103866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd358aa462194f727394b44615ac0741de613d22ce36e51924e095724d464b0d1. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/DECE72103868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73ee971b8bccd21d88131692b549eaf4b2165e01f572b171d1001df606a94b2c. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/DECE72103873.
Geistige Minen (Live - Weimar Festspiele)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15374b55f9eec2267fc566001d783e1fb6d288af57012466ee801fe9cc41bbb8. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/QMEU32306038.
Schreie der Verachtung (Live - Weimar Festspiele)
Schreie der Verachtung - Live - Weimar Festspiele
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58384756f2daa428ddc5171601bec4b6e0eb209e54de049b9b51555f7fdb7fd7. 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/QMEU32306042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd85d278f728e94f5f83f443d9cf6b8e08260ea3f109707c1b422034ba123cefc. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QMEU32306041.
Ich Glaube Piano - Live - Weimar Festspiele
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d6b9b222dc5daa7440cd149604edb3bc2d35c707d4f8e851f8f00a4848a5791. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QMEU32306045.