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 0xb05be5789b149f2b4bde2042defa4b67d73329e1d0a389bfcf5faf7a1a90aca5. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/75785a1f-0fda-4b62-983d-846340b97d51.json and https://artists.proofprofile.net/proofs/artist/75785a1f-0fda-4b62-983d-846340b97d51.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
SL Kieyuku Kiteki (2) - Omoide no Joki-Kikansha
SL 消えゆく汽笛（２） 想い出の蒸気機関車
SL Kieyuku Kiteki (1) - Kitaguni no Joki-Kikansha
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 0xd6d6287ace6f9921497e266857c2e2a3f6bbce88e27ee47d94689331d18e6d7f. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/JPVI09918960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5671b829e1bda12c95566bbb1cd6650a6166377f7834ff950c5cbbeb3e7de324. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T15:07:00Z), 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/JPVI09918970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb60842381418b493fba4d89a9ee3620dc1fb2c4bc75ec20c668750b7e2ee8d42. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/JPVI09919120.
バスタイム・リラクゼーション VOL.２ <ピアノ・サウンド編>
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64eed068914714ff161416db6841b68526acbac68b74bd691b16204b5c11dd60. 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/JPVI08606710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa9367cbc96262938286b733f8d2645c88d066026e3f68d9fb477f3c8a5678d7. 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/JPVI00226880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1159f50521ec1a195118d18cc19a3d7be9367611672432267e2b603ea2c28ab7. 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/JPVI00802150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46e9577831b58dc713c4ce93b3d3fef9b55c475ed98e39eda3c64159210539a6. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/JPVI00226900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88ed66cb3381d1ce6d611a855797459efd6b45c9871f77f05b72c26ee1c15b54. 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/JPVI00200650.
亜麻色の髪の乙女（ドビュッシー：前奏曲集 第１巻）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3745f7d633e850f2816cb3973b3f596b33294f2b54237f719e2a6199e7d6e9d. 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/JPVI09002730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fc340aaccfe721db9e97b53f5ebd103134fe0e1be719b48fbb962a0964a7f79. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/JPVI08610070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa38b7748fccb37a25a88c47f8d17364bacd2460a22f160a365219e34cb2140a2. 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/JPVI00226850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaec08579925a98e51b9f0d95c098b19a486319cad33d5ee9249b268e1086d908. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/JPVI08308510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98ab61c4db708ec5fb5a2e6b3087e7ec1f05312ad8cc8c77bcadcc25cc2d24ed. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/JPVI08306340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2f8ca77c9e85dd657c6add866f9206b11b092f74b7165d2b870300e1acf389f. 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/JPVI08606810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7152ab1e6c7281132081772f0420abfc0b758557e86782eb27de72e6bdce5ac. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/JPVI01113840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80965866f60846212705409f635522d8f09f6a6958571aaad43965c8eef3cb6c. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/JPVI00206250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8e3daa425a2e5ba1661a386515e9617aa29b65b346f7809a2684baf9f9a1c8c. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/JPVI00206170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc356cc85578258d2a633d76fded4f57dc8726a27c1ce629624367e6c6c8208b1. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/JPVI00206180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa510370b955bf9d80444cda54f5146c4da63fd5da53c1291b2f0ce12ab557980. 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/JPVI00206260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77f8f0aa15bca6d6792a61008352b8f0c1d92fcad44a6fa494299ac06022e00b. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/JPVI00206230.
水琴窟 ～岐阜県美濃市・今井邸 水琴窟～
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5b8339f212acf1ecaffe9ccfee47f2bdce6f01c1a0c9205384c12089454a091. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T15:42:15Z), 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/JPVI00455890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bda464e0bbd774eb7cd01f76449f356a5e0a869cc34ce217ed2c10e0ded03f0. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/JPVI00206240.