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 0xbb052dc45e3a4fabde32d4c6c6d3304a43bad1dc457a6953560e9f5515d31a25. Chain 2 (Bitcoin): anchored in block 953697 (2026-06-14T21:49:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6f34dc95-075c-49a0-b7cd-4fa0fe244eff.json and https://artists.proofprofile.net/proofs/artist/6f34dc95-075c-49a0-b7cd-4fa0fe244eff.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Der letzte große Zapfenstreich der NVA (Am 4. Oktober 1989)
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 0xa99516da92b39bde190b8027e0669e270f2608f2893a989b212b54bfa18ae207. 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/DEE701303179.
Nationalhymne der DDR (Auferstanden aus Ruinen) - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3218138c64a90ebb9024c3d6b0cc9e1d7ee21468fcb12c2368f4fd4f5e19368. 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/DEE701303182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43bf66d60a83359f8d3fa1c9c23e467ad74f202a62dc43951d8d928841a14a80. 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/DEE701303188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8537c53e1d2b99946cf5fc0d0ed3aaeca64d8406b2c88f8b7c0a6ada961c3ac7. 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/DEE701303185.
Lützows wilde verwegene Jagd - Musik der Befreiungskriege
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x201a3cadc1c522b9be0e7f6402023c7921fa5d113e98ed7bfd421145cdacd99f. 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/DEE701703582.
Marsch des Leibgarde Preobraschenski Regiments
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe93100b2bbf27afa05fdcb6178eca1d1583e2495df69ad613607e5b3c8fbd3a9. 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/DEE701703584.
Parademarsch der NVA Nr. 1 (Anmarsch des Ehrenbatallions) - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d40874ab31032bca1f4ceaeff9a2b1fc48385b5e93c655ebd6bedbe43759a95. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/DEE701303174.
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 0x473012416ec5bcfe95201f4b87192621b12908f739d660d40f68635903c8ee81. 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/DEE701303175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca9be7336cbc809e7b6264a9d67bf8c98dbbcd3f9ebf44cdd4d708fb09adca56. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/DEE701303178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfff29f3d0796150079dc7e46bfb4ada638ec11d6886004acc78959c5ec80713a. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/DEE701303180.
Ehrung der Opfer des Faschismus und Militarismus - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f210913b3117a8314ac2d3cac447f235d96459e5c83c635a6b33c4d35c3c4dc. Chain 2 (Bitcoin): anchored in block 960268 (2026-07-30T14:53:07Z), 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/DEE701303181.
Zapfenstreichfinale (Fanfarenspiel / Für den Frieden der Welt) - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67c3a0bc270b2c01891aa64762b399fc511fc01a23a2a5baa854df87b986dff3. 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/DEE701303183.
Silvianer Marsch (Vorbeimarsch des Ehrenbatallions) - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf48ae42377d40541ca021cde1aa2fffd6d60e38e2ad2279bfdc50b1a5cdfacb5. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/DEE701303184.