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 0xc731713bef40e3b549e202661f8c489b033dd13954f88c03a921dffde50e74fd. 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/f5af172a-7766-43fd-88fc-590c86c19256.json and https://artists.proofprofile.net/proofs/artist/f5af172a-7766-43fd-88fc-590c86c19256.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Dada & Welf - Kommando Katze. Folge 01: Der erste Job
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 0x7a6953ff082325b42d0b3eef033f2c6b848e7c9807208c158380f558f10a2743. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/DED792544067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf242d079ebdf446998208b5f94bee59dc38b36c27fb9a50b4f838f432a74ebed. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/DED792544068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cfbd133fd31e150ef9c82eea17d17cbe5485958f5624332da63626903f50434. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/DED792544069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x796d71bff3ccac601531ece4f8dc5dc712ce61963307887bd631f14f5c366168. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/DED792544070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x713d46e7400ddfe7d934e45c83099513f348cb9ccb7d74d6448afa9f8c726e3c. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/DED792544071.
Dada & Welf - Kommando Katze. Folge 02: Der verschwundene Mythos
Intro: Der verschwundene Mythos (Folge 02)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f18f9d3ee81acfb0e16df886fbaceb67755c74e689712fcf83c375f517c63ad. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/DED792544889.
Kapitel 03: Der verschwundene Mythos (Folge 02)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5772db3ddf8c1d9fd33b3b8760f5ec9d37d37b294f7ebb5e3c369dee4634fc14. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/DED792544911.
Kapitel 04: Der verschwundene Mythos (Folge 02)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fd8885ed7eb0f9cec452672b0ea25fa57376f9dadfc35ae99a4c08eb1346a10. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/DED792544912.
Kapitel 05: Der verschwundene Mythos (Folge 02)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecac647dcab99faff0994f55f235c4606b0bd9f9675800b24a4a4b7bc2447220. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/DED792544913.
Kapitel 06: Der verschwundene Mythos (Folge 02)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b86c1c0efbf23e5a66ed38d0662d04b0ed6315b1c02f4709da8b50567aa0fed. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/DED792544914.
Kapitel 07: Der verschwundene Mythos (Folge 02)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d18c2da34692ed91a43081e2db283713825231beb900186d7bb48ef4b1bab10. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/DED792544915.
Kapitel 08: Der verschwundene Mythos (Folge 02)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85865d00b73cae9313eb73025895420507a04a11e6442a10c435b34367d8627a. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/DED792544916.
Kapitel 09: Der verschwundene Mythos (Folge 02)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88b4846bc0c37539ed1f8fd92d09fb9061d14f02f6079e06f9d7f465f5cb3b6c. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/DED792544917.
Kapitel 10: Der verschwundene Mythos (Folge 02)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fcdde85eaf4730ea6635a4fac8a9c4d0419a02742847961e938d1fc2df9bebf. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/DED792544918.
Kapitel 11: Der verschwundene Mythos (Folge 02)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdff7be282f32a1916f74483d1bdb6c4d34fd9bc21b567e7a9596f070f1e6263. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/DED792544919.
Kapitel 12: Der verschwundene Mythos (Folge 02)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7c1f7dfa87f8ee97cdfde34d61869c5ce8429e5490f985f924d86a17808dba0. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/DED792544920.
Kapitel 13: Der verschwundene Mythos (Folge 02)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b5e6267b7348c9eb0e402d46546c36b9e2347047dd4fabb6f82f559df9ebd23. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/DED792544921.
Credits: Der verschwundene Mythos (Folge 02)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b79f33d683f6517006360c7b64df6a47b7d5fc7cdf0b359e17c1cfbca84ec30. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/DED792544922.