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 0x9814201e40ec8660c75ada29d0b2b0518f7bb6f7e04a65a3a489d81b5fe3b856. 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/e2c604f6-05d2-4460-9375-10cd0ae247ad.json and https://artists.proofprofile.net/proofs/artist/e2c604f6-05d2-4460-9375-10cd0ae247ad.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Wish (Deutscher Original Film-Soundtrack/Deluxe Edition)
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 0x093514b9c9937b08807483e473fdef6641c19227dd54ff01b3fd79fc95b89e93. Chain 2 (Bitcoin): anchored in block 957039 (2026-07-07T12:58:18Z), 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/USWD12329360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x529d36fe32df79cd05ccfaee0270a2ff0c52234f4cd565677cc3acbd1039a15b. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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/USWD12329361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74bb3f26d5abbd6b680173517e29e6bc88b7b57dae7ed6630918f4ade08e5b17. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/USWD12329362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x736e117c1b42a9c2150a16562854e39903b87f772c1c70a2fc796190a7e9f198. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/USWD12329365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa054ab4033230ee639fda37a4f636fb537035e6b9f145de1e81fd3ac18316b90. 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/USWD12329366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb71714dd99fc4f2e05e1acaf08ce05af643c83571fbed17c9284391af8117cdb. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/ATM891902994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78b09806d98d21f981650c8b53e934b71c3b1ecb58336ed0435075f2b359ccb7. 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/ATM891902995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98933bee6a8a68020b5b28a02ff6b21eef2a1b8cc8b3aa05253821618539fd97. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/ATM891902996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8e5e860f9b70058aa3e926f3536a1c814bc38fa834cb047b261cf3068533aea. 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/ATM891902998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x896e5ffc00b27511bf45e2a2e37df1db30b0bfce61b2e3e900d4f68b55cffa8d. 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/ATM891902999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b3d71fb304ad518a4988d97516a25249b724289bc72fa03fbd38a6dcaaf7490. 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/ATM891903003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33289f395a7a7d8002f555bad4ce5b028e4c90a46c65c885cd33c4719cbf1cb7. 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/ATM891903004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4200f136b2e8660b74cb1799d990cee5c351ff68c3ce8c93e469ebcac94a74a. 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/ATM891903005.
Nautilus - Das Abenteuermusical (PreCast 2022)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc34a6ee9695b742230742285b1afbc73de0c0600a30ba60952d94fe3470b032. 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/ATM892203377.
Was auch kommt - aus "Wish"/Deutscher Original Film-Soundtrack
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x529d36fe32df79cd05ccfaee0270a2ff0c52234f4cd565677cc3acbd1039a15b. 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/USWD12329361.