A circus is a company of performers who put on diverse entertainment shows that may include clowns, acrobats, trained animals, trapeze acts, musicians, dancers, hoopers, tightrope walkers, jugglers, m
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 0xc940b48af5556308d43973ce2752f31cb530c223a401f9a718c3f69c1784d986. 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/0109c9a2-e758-4bdf-b816-29ae89976356.json and https://artists.proofprofile.net/proofs/artist/0109c9a2-e758-4bdf-b816-29ae89976356.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 0xbb81bf5963d24c8fe043575cbbdd63c574ba78a4e3fa603adb8971f2d00eb508. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/JPAL07900440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5bbd9aa82ce6242482e9267de1140c9b95c710e31b99f0280544cb51ec79fa6. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/JPFH08701060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a71b9d2c86c126ffba87faea90521008baaa0fef66befc00d4fcfff7915c7e0. 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/JPFH08801160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27424f15bf7817ad9ef9aa8e6b7d6012fb77df9253e3bef3d5f047fdd9b42061. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/JPP400500341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c7a85c37fa0cfdbc8601a01c2de22356d8d2b8c02a54897a32c3fe438a4a025. Chain 2 (Bitcoin): anchored in block 957775 (2026-07-13T00:04:23Z), 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/JPP300500261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea85de02b631e801bd634ce9b40878f65e1983686b20db57cc1443cf84621481. 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/JPP400500357.
サーカス アルファミュージック編 1978～1980
しなやかに歌って/ダンシング・シスター
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d1169fd75dd3429b8cb5b6d6f27ab799eae52174fc0a841dd7cffb70f48d150. 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/JPAL07800550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f854255ced39cac5dd3013138658232c9b6fdfbfe663ee31a03649fd16df8f4. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/JPAL07900430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19f18a6c4ce1173007d0b99c92c49f35ad37ff006aed85e586e03d1da50163f1. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/JPP400700801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72cb66221f4ae72c004488f3024531241802439e9c4077ec4b7c40cf3c7ceb59. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/JPAL07800010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda37e07d344face1d73f5f41a77e9acf7e8db1b01686680684fb67ea2a1f82fd. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/JPTK01304300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3556ff801a54ca718ccde3eb622758f1bb5452c92fe6fd6d9dc9903350ca1a8d. 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/JPTK01304330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f78db8799a29b9d212d11949f40a916567b0d88617b86eeb0c161e48e115495. 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/JPTK01304340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x394140a9f0861f7f672b670253984b73cbe6fbf429d3a6f845594aeeaf989817. Chain 2 (Bitcoin): anchored in block 958873 (2026-07-20T11:48:10Z), 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/JPTK01304350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a2e7b5f790154546db472ad1d11eddc94401534ffbe9313019e7079a2dc578b. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/JPTK01304360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d8b4ff438ed051f5924f8ff109c9065fbf1d706705d0db44968b40373236ac0. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/JPP301800223.