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 0x40ddc1be3494197ee8cc156cf92f0b7805b774d0d4d6bbb6e4534792ac358a1a. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9794f7d1-c76b-4256-a804-c4b2fbfd1858.json and https://artists.proofprofile.net/proofs/artist/9794f7d1-c76b-4256-a804-c4b2fbfd1858.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 0x67d080a61bea35f677c3f9e8481ffa733e2332e8057dc2e6476c323eb1a8e3d8. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DEC739700860.
Es gibt für mich kein fremdes Leid - Extended Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x326d4152699dd417c69450a744bb70cc0b8bde7ab9c52b3ba9a535914f623f1a. 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/DEC739800741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e6c8c564ec55a1861a62b8264f1d359f0a7fcb274bbf47530fd556cc7a22fba. 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/DEC739700853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3d2a4a3ac6f39d42b2620ba2d82f2a5a6cc4a26a52b91c77abc2c12149bf745. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DEC719400511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66df1f167bd308d08fe68ffc7517631a14989474f4922e1132a2a554ac862720. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/DEMH88720072.
Verdammt (Und dann stehst du im Regen) - Long Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e8e286419fba51f635b03643ed61b0d9154e94b7099e923a9c6fae250c35b66. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEMH88720025.
Schön dich zu sehen (Jetzt wird alles neu)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbe91ed4c74aa3f96d2a09ed1a93725de7fe0b1468c4a4eeb1d189c8b5fa3eb6. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DEMH81320024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb323af57444cbd5b161d8d665a8535f18513e96d5fec3eedfc297ec343729a79. 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/DEMH89720028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb7f687517eb589d4839fe4a0b21b4eca0b0b5616484f031cf04b8b6f7008b13. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:41:05Z), 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/DELV42400270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2a90185d3badbf22bac17e1c3a58ea756c9066c63527b4cf862ca381e39564e. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-21T17:27:50Z), 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/DEC719200381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d480a869a98f9c13a153af80ed8ca3037609228182d01876be36eb29f182656. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/DEMH80820005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e1a0e903beae4f6902ac55450a55ed18adde81b46ec9a091048bccc398667b0. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/DELV42500529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e2ecf7039b7e5b96bc484ed2459dc0cb7db465385da6290d68a60d59ed20314. 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/DEMH89820073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3d2a4a3ac6f39d42b2620ba2d82f2a5a6cc4a26a52b91c77abc2c12149bf745. 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/DEC719400511.
Es gibt für mich kein fremdes Leid - Original Version
Die Original Hits - 40 Jahre Ute Freudenberg
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x010b853831914053138dbe4dceb4cdb900a2caa25ce37a87ef694791f9a35b58. 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/DEC731100189.
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