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 0x0b9801e0e3f7ef325ac96b597bdd2d58885801e4dc043555fb589808aa757bb9. 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/8e33cbd8-052b-46e4-bc39-b78ade3e98d4.json and https://artists.proofprofile.net/proofs/artist/8e33cbd8-052b-46e4-bc39-b78ade3e98d4.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 0x0a5ea591cfdbec06a91b6425f9e880850defcb7e6a263443f80a754ab311b53f. Chain 2 (Bitcoin): anchored in block 956482 (2026-07-03T10:33:57Z), 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/ITO101058157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d90ae57fd530295d826beac0c48307b4beeb92b58208c86c5c9bfbd48e81681. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:02:57Z), 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/ITO101058158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ad4e3481d853459746370fbdc4f9ce84aaf6d71e56c2bc804b831d9b3060b65. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T01:59:45Z), 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/ITO101058160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28b6a0a16cee04f7c5c5a65fd823dd36360171f424df5f394ec7651f6d73829a. 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/ITO101058161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb20e9c5e80dbc15d69264befdb9bd6e7e6645a19cb32d30933cca18f013e6664. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/ITO101058162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40ff9cbb11f88291f2635b7f63a56eff5b667c29175b14c7a14a6a972f43687e. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T12:54:58Z), 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/ITO101058163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fdc38b8cf85c829ea1ad2883e1fad1e603e570ee997215557d82038a361d9d8. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T08:33:12Z), 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/ITO101058165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa53f7770a1c186d49763b937fa915888fc09e067b844c63f62fc0e597b369bf. Chain 2 (Bitcoin): anchored in block 959003 (2026-07-21T14:43:01Z), 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/ITO101058166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf48b579694a5cb667d3fbc0c176d70c4807df91ea78bb82f8141ff39396d96b8. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/ITO101058167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60355d9699c48d153daf64a4d9c94bba64eac7e92e1fb28d0a9c2a91228e713e. 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/ITO101058169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32de5e39e6b2ded3ce489b77cb08d423c605aa54ee47d723c0f9354e47817639. 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/ITO101058170.
白鳥の湖 (チャイコフスキー, クラシック音楽)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2efba81af5ec765a4cc222b392347fc9b97d34f85756c35c7ca994559a80ac8d. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/ITO101058188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d6ea589a7508066421c92339305f79548d43586dbd6ff5b6528bab81ed35e81. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/ITO101058189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57fd9a12469bf001e2783ab581151115d2a8f4e8015464c6e36b01177ba69ad4. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/ITO101058195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1e5d20737850345053001cd5958b06019b1108ed01e8da1b2e5add476e10c41. 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/ITO101058196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x423820acfbf0f9b173f0fc299c5855f265d77c68d1eaf7a6779f9acd6433b4a8. 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/ITO101058197.