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 0x336860bd1d215304e327e9e7493075d7f91ef00340b1073b4a6481a96d4f6481. Chain 2 (Bitcoin): anchored in block 953777 (2026-06-15T11:52:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ce3c6f03-7376-4266-b341-f894886b2d3a.json and https://artists.proofprofile.net/proofs/artist/ce3c6f03-7376-4266-b341-f894886b2d3a.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 0xc54ba017fbbdcbc9185161f1181266b7335a00c514a76dfd52facf1b5931a4ff. 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/GBUM71605834.
あなたに太陽を～CDデビュー20周年記念ベスト
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa20f3ebd3f276f748a0af12dcf2d18568c028b48431648ff95cc2089bc85c6d8. 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/JPPO02302494.
Japan Maritime Self-Defense Force Band,Tokyo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3056928d91294a205b7b5b6c2d8cecac05c3d8a2b535d458b4cfeb034359b607. 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/JPPO02302496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8ba661a1dce9533c1ab8f8077a96707aef79556dfee0b282de2aec269660882. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/JPPO01900510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa64f492048426313e5cd0df3ff1b63d00d13e7a7bd53cb926f05622bd429faed. 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/JPPO01620198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc390ed491956d4cbb6876487ec6d84806429abc45a5fbb30c011d999573757ab. 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/JPPO01620203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaab4fe41db0c3ecc2c4c7dc06854fccd574fa15ce5a60acaccf3bda2f503bd7. 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/JPPO01102840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x016b5b008ab8565678762fbee0aee335fac6dd8a7eeb9eac7ff15e594949b306. 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/JPPO01073660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c116672ae28d2463b1b0d015fddf36fa75ba29205cd23271ccd73d4cd0cebbc. 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/JPPO01008550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b1ca0849852270198b20fa987c93424e70cd179acfe274e88ae36f68c5769d5. 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/JPPO00523800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d03004411a34bb63d89efc19e75556bfe9eb4e7b32bea612bf907a411a770a0. 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/JPPO00427270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cf176222a4d3ca8f324a7ed65136154bffc565b103467c115c63052a54701ee. 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/JPPO02102721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8ba661a1dce9533c1ab8f8077a96707aef79556dfee0b282de2aec269660882. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/JPPO01900510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cf176222a4d3ca8f324a7ed65136154bffc565b103467c115c63052a54701ee. 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/JPPO02102721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8ba661a1dce9533c1ab8f8077a96707aef79556dfee0b282de2aec269660882. 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/JPPO01900510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9798c8c2c49da3c940569b8d849bd30507064f765306201629d5597cb074cc2. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:03:50Z), 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/JPPO01900515.
ラッシュ・バイ・タカシ・カトウ
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x264facc52930063c534367553ab4ec9234d51c1aaa20a148dfb5bcddfeea82aa. 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/JPPO00961100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8ba661a1dce9533c1ab8f8077a96707aef79556dfee0b282de2aec269660882. 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/JPPO01900510.
Puccini: 歌劇≪トゥーランドット≫: 誰も寝てはならぬ
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38ca73ff752255dfb55ad36219ddbc806ee792af80822b435606c7721c332f7a. 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/JPPO00319910.