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 0x896cb4bc6e5b321bbd41484710cc878ef87ca8f6e0cc65a2fe8d521c8837a896. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9360d62a-0e76-48b6-bf68-5e8225ae469e.json and https://artists.proofprofile.net/proofs/artist/9360d62a-0e76-48b6-bf68-5e8225ae469e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
懐かしの洋楽ポップスオルゴール
I Just Called To Say I Love You(懐かしの洋楽ポップスオルゴール)
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 0x2272c7732e3f5987e4fa16a99c1fbd55271a877f843141e441448145dd4d51dd. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:55:23Z), 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/JPQ331700057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x718af7412a17989f9e4b31781898c4c9c2d9ed0b7aaea3abe0bdc7fb51157ae3. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/JPQ331700058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe47cd1bc47c4ec73f3417ab4e3251cffa049d440e8de1705355dcefe2ff3c50a. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/JPQ331700059.
Never Gonna Give You Up(懐かしの洋楽ポップスオルゴール)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x899d425ca4fdefb938adb09f21875d574a6777d1d445b4ec0a42ca175c103795. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/JPQ331700061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbb4550485731330cb5bd5ffcee6e5cdb689e462ab64deed4d0d0b56506873af. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/JPQ331700062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8a902f5b6d7a5f2bef2dc9fc2ce7447a22cc08d383da03e2139dd89086b8c3f. 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/JPQ331700063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd9ecad029632464b3c133d3c15b36c22c1b1e23eadf4fc42bc9aed7a532bd36. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/JPQ331700064.
Wait For Me(懐かしの洋楽ポップスオルゴール)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x351dcf2bee463ec3e3db09985547f169cd98518125a1d3a1e0861139f76d55f6. 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/JPQ331700065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd1e4881528f09fb43618a4b7a88b11b0574ed6e8a37cfccec46b8ed5b0e1276. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/JPQ331700066.