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 0x78ba2a0814de8363cb127bcd632262e621ef18e51c602f8a1f6fbd50369e9c95. 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/c7857c82-6a21-4ffc-b660-0346d46cd3f8.json and https://artists.proofprofile.net/proofs/artist/c7857c82-6a21-4ffc-b660-0346d46cd3f8.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 0xe139541fce01602b66ec0f06bcf33fe9341d357d439c31ac832b6a7000b151b7. Chain 2 (Bitcoin): anchored in block 957780 (2026-07-13T00:36:44Z), 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/TCJPM2051632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5b47c565166265d391b694cf39c81dd77cc2ebdcbe4e32f03258140fcc9b1c0. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/JPY252400093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x188f040ad6d671cb9d9a626b8b8eeac1c38457b8c1513c9d18c804eb5de60cdd. 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/JPY252100002.
月の兎はヴァーチュアルの夢をみる
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80e28ea8cfd7545f42fe796e12b8df3b15162aaffed0a11d7100bc09cda42c47. 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/JPY252100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52d51655a44bae05a6256bd6b16813027609f531d0cfb2065775b72041903769. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/JPY252100008.
Moon!! - Avec Avec Moonlight Power Pop Re-Arrange
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a9c771575090d337b1439c861f6c7d8f846bb99341a80392b0c58842ff56c58. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/JPY252100009.
Tsuki no Usagi ha Virtual no Yume wo Miru
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd2ea73caae89414c3e6e0b63facc75fad20343341d566bf0421e8edc5ea8c34. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T19:57:12Z), 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/JPY252400092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x188f040ad6d671cb9d9a626b8b8eeac1c38457b8c1513c9d18c804eb5de60cdd. 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/JPY252100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8efca53de17ef089abfda4781701d0c8fd7ba3c217fd2dd297a427b3ca0495ca. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:29:23Z), 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/JPY252100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7293eb8e29705d38acda499ac8eeb6735d246546c5afd0fe71a141857d59ccd. 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/JPY252100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b5d60cd3c9ed7b3952149ac618e8078d536a2fdcb6e80c8b8e9f0c99630ea5c. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/JPY252400118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34c56a1c04b9dd9c2b19f8da7d0ef9e935523b7d57b1e8462accaa6d03853cae. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/JPY252400150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3edebfc1af1449a79ef5ab8e746c3699efaeb4c8685fecbb4d1448f41079148. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:06:06Z), 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/JPY252400148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe32cf128ea1111c0582ec4057a4b12d4eaf7b435324f5d44459c6bfb0735df2. 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/JPY252400149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34c56a1c04b9dd9c2b19f8da7d0ef9e935523b7d57b1e8462accaa6d03853cae. 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/JPY252400150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5512141af6ba2ce0c8702a1e62a78ce4c01342f7555b939dfde2478d78c4886e. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-16T00:28:07Z), 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/JPY252400151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f8338c2cc8430aa92352aedbbad3e7d201ff42184ab097b83f2a7825d62707d. 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/JPY252400153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d3ea4c2289df7acac560d6a60a7c8a17d66824bd9c08413de65770ed3dd62f9. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/JPY252100124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x126ae8865a4c4adc5fdfc22ad41e2eb20430aa38a7afa1b29825c9e0990bf75d. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/JPY252100126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9d5805c0b1d3e549b2f681a1e09d20f55fbb9020ae8fcae365dc9d2830ace66. 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/JPY252100127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc81e66d61c775bbb350618102f1475f1dd976cbf7d8fa63359c773bd3766c39f. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:20:06Z), 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/JPZ922004937.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6aa6453041d75eba0c5dd625aeb70e691503e1a50c03cece2389087b168e175e. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/JPR502145946.