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 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 0x2e8ed05a2707b8b90c687b97ac6e5783bb10b045061952759a854c700f646d5f. 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/68ebcce6-80b3-42e8-901a-dcb7e7237c35.json and https://artists.proofprofile.net/proofs/artist/68ebcce6-80b3-42e8-901a-dcb7e7237c35.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
TVアニメ『のんのんびより』オリジナルサウンドトラック
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 0x276543fb1855432842165d2c187a131d19ea628ad7cbdc72a74a08ad88947d97. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/JPI101302762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f3e29144e23ade28798fc0efdc9658f116351ff57049324c118d85ba0376e4a. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/JPI101302734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78073051b7f76210e50ddf88c0ca5e99d61d1d8a36348e93757ca2031f4a78da. 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/JPI101302736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1269d2302f2c4f52ff9d7660f9697448b30ecc29ab485cb8c65a5aece54145e6. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/JPI101302737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4efee286787e6612f94bf8910d46061a300b8cc26a246b31afa461ba925ada40. 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/JPI101302738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79d0b8fb2085933d6eb5b47caad60cc96da25aeb4be22f1a83df841f8e9e340e. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/JPI101302739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94d728ec6cd12cf6e287f2f88aaa5f6b56c3ccd9a3086ae746adf769552a2ce9. 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/JPI101302740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa936d7932ad2c6300cbb3a37b103ebf21c2bae8364adb51f1916765a22cf1ef2. 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/JPI101302768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4329d873d8b8b50ce1cd035e0335e568a41aa2ec2d49f000ffc4dc53aa79cd5d. 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/JPI101302741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x864f0634d55b51bcec417043e1493a0cb4c1c16f0179f93cc312a6cbfdc388d8. 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/JPI101302745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf25931cfd16e4425a01585c8a88a9306e8c20e309b839c96eaa555b43a3fbbee. 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/JPI101302746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6922aca81055fe7da8f13f13f02b1b536eb2b888973ce66846683cf2f3ecbf89. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/JPI101302748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e26801715657d368ff0a23975910a00cc0759c38d0f98fc2d5813808018d3ea. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:39:11Z), 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/JPI101302749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9a8013ca6b96d9740fc824afab16ae7e1b62d60da4d0ddd251f21bc62454e14. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T18:49:36Z), 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/JPI101302750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x703dfcdb11d66cc3c4d3dc4a7d821c164f2cb13b053e494dd59aaf18eb420b5a. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/JPI101302783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e744f8921e693b49f5643da2fe2a60334f45694cfc19030c3be99ab465c6c51. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/JPI101302757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x661fabac8abe9b20941ecaa442deda82fec089ac039980a49fb9e0f0202fde76. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/JPI101302758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3db8566a3e6e57f7905aaba4ee75099d83ad8181b84226629205234ff132cf2d. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/JPI101302759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc068d1b17c73bd8076e7b7bbb2c9a4558fb546e91bcade9a6bc3a518e46a75fa. 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/JPI101302760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd98d813b0df14b78edcbd95c85797f09c77b453581aa9cbb0de97e7ea563c7ff. 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/JPI101302761.