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 0xafcdfe59243b6d892f2ba679d4ca227f3e46634774365f705b3c06e3c29e04e9. Chain 2 (Bitcoin): anchored in block 953812 (2026-06-15T17:06:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f55f4983-c1bc-455c-b4df-4d101f686196.json and https://artists.proofprofile.net/proofs/artist/f55f4983-c1bc-455c-b4df-4d101f686196.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 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 0x9ba3b6d9e48e6c937b582824eeecb8000622ea3d958d1093f958d33aa90753e2. 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/JPPI01553640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fa59177efd699d7c25c9c17f49a7318d9404938d593301517c3013366e123e5. 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/JPPI01553650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5027d3a3122a015f14996a8ed4feff185945894300ff964cc47e3c7973e10140. Chain 2 (Bitcoin): anchored in block 957726 (2026-07-12T16:04:28Z), 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/JPPI01553660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4033046fd341c98d03fbd7f9aa1a2d2290203deff8c023d1165dae82478c03c0. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/JPPI01552430.
ご注文はうさぎですか?? キャラクターソングシリーズ (06 チノ)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd83b2ee1834d42580fa47081478db755e4b5f89b390a3c515dcf7982dea101c. 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/JPPI01651540.
ご注文はうさぎですか??キャラクターソロシリーズ (09)
ご注文はうさぎですか ? ? キャラクターソロシリーズ09
ご注文はうさぎですか??キャラクターソロシリーズ (9)
ご注文はうさぎですか??キャラクターソロシリーズ09
gocyuumonwausagidesuka birthdaysongseries (9)
ご注文はうさぎですか??バースデイソングシリーズ (9)
ご注文はうさぎですか ? ? バースデイソングシリーズ09
ご注文はうさぎですか??バースデイソングシリーズ09
Honjitsu ha makotoni RARIRUREIN - Rearrange
Gochumon ha usagi desuka? Rearrange&Cover Album
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x767a1b3d33c98bf1bed8d1e27f3a858ba29789690a5ce5d179aabe4d900e99f4. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/JPPI01650681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdd37d6fe871800b9787e1d45999cf7bd609c14c89d6451e57a533c387dd90da. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/JPPI01452681.
Gochumon ha usagi desuka? Ballade song album/Blende of Letters
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x297008b1ee7f2aa0fda09ae29ed345926286dd5cccff6d919bb203ddb1621b25. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/JPPI02050140.
ごちうさブレンド TVアニメ｢ご注文はうさぎですか？｣キャラクターソングアルバム
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18b1dc4fa300a8f17d2b06493822467cfb796f48f066c6dbfcb44e04912b6f6b. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/JPPI01452670.
｢ご注文はうさぎですか？？｣デュエットソングアルバム
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39fc38ff356dfa526d98e5f4a573298a1582daf3788ce21d145530d723a0dacf. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/JPPI01753150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cdbf0891027e9913e34d1dcc52fd7ad6663c7c61dd3341523050cda408d41af. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/JPPI02050282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03875709c7a03360879d601eefaee57846b02010bffdb6232bcc19a3af4b2be2. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/JPPI01501172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x412d9c14a25e4c62696734a91c04ff1d0ec91164f088acd5acb128b90c2faa65. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/JPPI01752590.