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 0x72da8c6962cf8cb76a7fba2c4cb50c78d9247ddf3533b57ff32a345d81ec5802. Chain 2 (Bitcoin): anchored in block 953684 (2026-06-14T19:51:57Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/66987f1a-5719-4777-8818-d688aa7b328f.json and https://artists.proofprofile.net/proofs/artist/66987f1a-5719-4777-8818-d688aa7b328f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Muulörgeli Plausch (Uufgstellt und pfiffig!)
Happy Swiss Folk Music: Muulörgeli Plausch - Ufgstellt und Pfiffig
Best of Schweizer Volksmusik - Traditional Swiss Folk Music, Vol. 2
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 0x9096fd6d9dfcfa58e943467492a223c78f024182de7cc9ba2d3c32846e35fc42. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/CH5751200056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c1d91310abe50320656864d210d3b73cacbcf4c2986afbf5bd35924da6618fe. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/CH5751200057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44312978580e656e84ec9d82b04c4e06252dd2e0abae5b0b4d7c1e323e113fd6. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/CH5751200058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d461deba91d6aa5b46dff6a490c848cc76e3abbc14fa6acf4a9b21a1693672a. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T01:57:40Z), 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/CH5751200060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7640dfea369386d7bba8e061d680f18c3d135cc4ff4a6e1982993e4e9c8e297. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:08:52Z), 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/CH5751200061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a9ad6d6daea2c59a386e896472336dec1cda08c99a8084499f4c64c76de3bb7. Chain 2 (Bitcoin): anchored in block 958891 (2026-07-20T15:59:05Z), 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/CH5751200062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09c6c59982cfbb911d108c74552571d5c52de7860fb0ed592cd925b934acf90a. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/CH5751200063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbd1cca8387af82564df4802c3568d05a92aa637f1923213f8f5e40dbf9a8f21. Chain 2 (Bitcoin): anchored in block 958691 (2026-07-19T07:19:31Z), 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/CH5751200064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ef4635c16cc1a72308c77209aa5c0ac0153a319c47cb68b6ca04d15da3c5679. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T02:04:04Z), 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/CH5751200065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1651c135f32e06dd5516bcca2887fd85cadf0410a7e29504abe0e9b899ab2d2. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/CH5751200066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa943ab698951262bfce63c8501dd2d82b176c195d26a3425a7d1f3ac522f1b3d. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/CH5751200068.