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 0xa33cb3cc3d389b89534a87d94ea611b1f5ebf41939423472f91e483e0a2bae8a. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9dd76793-07cf-4433-9068-aacb643ea72a.json and https://artists.proofprofile.net/proofs/artist/9dd76793-07cf-4433-9068-aacb643ea72a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Loslassen (Bring Back the Love) - Radio Edit
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 0xd52015d27d95c3202784482874a031ece0e1dc09a23633daba4e861fc0bdfbfd. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:28:53Z), 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/DEAF71346513.
Loslassen (Bring Back the Love) - Tube & Berger Edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04c40f6de894684e55b3714465cc389e7ca0335f2778225f17eba2421dd8e6b1. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/DEAF71346514.
Loslassen (Beatamines & David Jach Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d34a334f5fd6dbba2927ad0fe035ebb9bd30d4dd2591182a3b4dde35d5a0184. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/GX89G2405307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd54eac9c5afffe1279bb8e3997cb6211ebfad3eb5812acaaffc4e47e564ffd7. 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/DEDU61000004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a31ff29fe8b3d4e7f05ee9904534292c0f8e2077de50d28d05397d3bac0bd14. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEDU61000005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5320b19fb17fe045692cba6fae73c04ac027c4031f6ee6e9349eaf9ef528cb9e. 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/DEDU61000010.
Zuckerschlecken, Vol. 10 (Deep Electronic Sounds)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1ae7a9087aee7a7b7755c2f5282a519b2fb2ef1a5fad988330fd8da8b154200. 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/DEH741409114.
Zirkus Zirkus, Vol. 6 - Elektronische Tanzmusik
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd54eac9c5afffe1279bb8e3997cb6211ebfad3eb5812acaaffc4e47e564ffd7. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/DEDU61000004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3533c5dbef717e52fc5293dfe484aa9b757ddae3fbd60ad6807e2bbb01e1c48c. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DEDU61100009.