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 0x266e817ac60f8610d4dbfb57b6c70045b4264e516c7b0ad80017b76cb68e4c6f. 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/0a2ff500-8b07-4cbe-a39d-24e26c3f0cbe.json and https://artists.proofprofile.net/proofs/artist/0a2ff500-8b07-4cbe-a39d-24e26c3f0cbe.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 0xad18f5cbc26a96b1989ee5b1ebdb2e4d85567b74e7382412146bbb8c1593613c. 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/DEAR42185154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x871a48695528e846102a651babba21bab5a41df12e6650e58cc5f58b557fc0da. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:29:57Z), 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/USLZJ2306220.
Sun Glitter (Aus Dem Film: "Chill, Brudi")
Vibrations (Aus Dem Film: "Chill, Brudi")
Sandcastles (Aus Dem Film: "Chill, Brudi")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x398205e85ed2c181c72c38ddee57b8aae46218ed5b1672889569e289e0d834ac. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/NLQ8D2400628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d08baf6d5171c05d2e57c99f549efb61aef710852bdf61a953002cbf0faaf49. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/DEH742429077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8b0779577acf3dc44186ebd254534a3e04df8db5c4e55d8ec70ec408f9784af. Chain 2 (Bitcoin): anchored in block 958432 (2026-07-17T15:43:17Z), 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/DEH742436563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dcb3096e581d30393b3fdb9d1ef5be81a6e6e141202dbddda72026fc864eb56. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/DEH742504233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28219095f2f7337187683e1904432214d8e437fa77b5996c613eb43021fd8227. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/DEH742509913.