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 0x2627c802b3f274d0f9c5825a84c808d7b047a32df2d42e44e3d5a52b4aa14eb6. Chain 2 (Bitcoin): anchored in block 954533 (2026-06-20T08:57:02Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a4be3f23-9006-4e32-9e7b-67b4f470e301.json and https://artists.proofprofile.net/proofs/artist/a4be3f23-9006-4e32-9e7b-67b4f470e301.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Im weißen Rössl: Die ganze Welt ist himmelblau
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 0xba8cc4c9a802c3fae05100314c34062c8c1c19884a256e89c9c9ddfad09e4086. Chain 2 (Bitcoin): anchored in block 960422 (2026-07-31T15:27:29Z), 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/DEF066306180.
Im weißen Rössl: Einleitung - Im weißen Rössl
Im Weißen Rössl - Saison in Salzburg - Hochzeitsnacht im Paradies
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e7eab71f64877ebb15e3d11ff204b838edde74b06cddd68efb5512ac1be02ab. 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/DEF066306170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba8cc4c9a802c3fae05100314c34062c8c1c19884a256e89c9c9ddfad09e4086. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/DEF066306180.
Im weißen Rössl: Es muß was wunderbares sein, von dir geliebt zu werden
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa2e8d788e289f7f874ecae8208ef03faa678597d7d2851d05c1523a7fe25f79. 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/DEF066306190.
Im weißen Rössl: Es ist ja nicht das letzte Mal
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a265212b87458b2d697fa60a898bd2c2021aaed529177c8ca9c89575ab27bb6. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/DEF066306200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd0aa75a93e526f0cdf40ffdb975e08b76f8367a21b1760e51f457dc7538ae9e. 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/DEF066306210.
Im weißen Rössl: Im Salzkammergut, da kann man fein lustig sein
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x713e2d8ff12ddfb4462d6200aca4ab75001f652e34482fe72825788128e9c48f. 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/DEF066306220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x238da5cd3ab17670835c80b23ce5b915b7106236f8453f359688d07458cede1d. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/DEF066306230.
Im weißen Rössl: Was kann der Sigismund dafür, daß er so schön ist
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa191fd704767998061a8099424b7e657446574c069536f5be0867c0e36900262. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/DEF066306240.
Im weißen Rössl: Mein Liebeslied muß ein Walzer sein
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9470415a8f718a61e38fbaaccc129b8accbc62426763959c85ee9bffe607af12. 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/DEF066306250.
Im weißen Rössl: Es ist einmal im Leben so
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6615bd1ba617141a8a1e979e19a5b3a063ce24e3ea9f6aef0267bfe35a6c8ba3. 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/DEF066306260.
Im weißen Rössl: Das ist der Zauber der Saison
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d4bb7f84526c5f16f5c796fd3ca41475a8d1fb77ac313b956a03757c312645d. 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/DEF066306270.
Im weißen Rössl: Aber meine Herrschaften
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a90018a185ba7128a65245bdbe2fb87cd1002c8831111f9a8e81a743caf83be. 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/DEF066306280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb7760c96acb9ef68dbb9555b6400179afca8e830b5c5346f2002014267b2f49. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DEF066306290.