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 0x5a9ddba32084e9f04c1b9cf45eef64f926a60fa70d33f9f0184bea8cd2014b08. 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/a776da16-faf8-490e-bd65-705a8c51ee8d.json and https://artists.proofprofile.net/proofs/artist/a776da16-faf8-490e-bd65-705a8c51ee8d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Mother of the Sea (Ponyo) [Violin and Piano]
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 0x17606b06408f4934745839ed4bc9eedb70dcf392c3a2bc3e5aece06c55a4c774. Chain 2 (Bitcoin): anchored in block 958571 (2026-07-18T15:39:25Z), 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/QZNWY2018761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9b188119336c555a302973f923f6da18cbe820e8f20c94a4f5b8d3f418bb5e4. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T08:27:18Z), 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/QZFZ62113632.
The Path of the Wind (My Neighbor Totoro)
On a Clear Day (Kiki's Delivery Service)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e8556facaac3a037176fd8e1ccf009e40bfc34bb438fb2f81ed6c7c5a54090b. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T08:36:48Z), 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/QZHN32101749.
Mother's Broom (Kiki's Delivery Service)
The Road to the Valley (Nausicaa of the Valley of the Wind)
Musical Theatre Album by Edward Chang Violin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62cb26b6eb4d20555a2ce8543b4593f484a5438704b827ae737553ddeb95531c. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZRP42172521.
Merry-Go-Round of Life (Violin and Piano)
Kiki's Delivery Service (Violin and Piano)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x918b71e84e5425ecfddbe21c701dfa444c5a9edd9b7ac3d6bfd545990ede2086. 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/QZK6P2202437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x709192c3461950c5751554ab5b66ff154fde10fb42c63ba2b5d84f6e8a9d1118. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/TCAGJ2208620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e68912d55008f2ba4420b5d9429f3810f93b5e46b06f8b5922ecb45d81a67b1. Chain 2 (Bitcoin): anchored in block 958947 (2026-07-21T03:29:56Z), 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/TCAGM2226718.
The Promise of the World (Howl's Moving Castle)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x583a0d1d7e088e49903a28c792ff3f059f53d4f880d1d38314f3978250911981. Chain 2 (Bitcoin): anchored in block 958325 (2026-07-17T00:15:20Z), 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/TCAGM2251895.
Can You See My Heart (Hotel Del Luna) [Violin and Piano]
The Flower Garden (Howl's Moving Castle)