1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xa480c4e049bbf1b4c9eeadcc0795992a47d658b8f0a02a9dc01b499f3713dac5. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2728cb93-9af0-4d3d-ada4-ffc99264d1d7.json and https://artists.proofprofile.net/proofs/artist/2728cb93-9af0-4d3d-ada4-ffc99264d1d7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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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 → block OTSBitcoinBlock must exist at that height 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 0x56b258984d7e25e7a53b6fed67d851b7aeb238b36e2b6e6de38bcb57ca0d6e7c. 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/JPV432200245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd591e358ff303937fef410117a1d8295002f671d3b9e800cb0562cbc2b2fecf1. 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/JPV432200251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15ad7906b3518538eb70bfddf2a7d8c50e0277935612fbc45b212cb125976c66. 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/JPV432200252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58eb3c6356d49d6955603fea6ce84a3504b3075ccc0ee8d4b1a8501bc71d691b. 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/JPV432200258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4104a7fa033e498836e70bdb19eff01f4667ed548f857e917d219328836402ce. 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/JPV432200262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4019321bd09a9993cd940e1b731bc70caa727b50779526b87eacb2bf85ebb9f2. 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/JPV432200264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ad2b8585c14287d6ece8103d2ebe1f19aa447c75d311f489c6d69753b7b2559. 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/JPV432200265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d946e8ea59d9e71bcdb739c2c50b9d1dfd6abf1d019878186d2a30d306d4e01. 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/JPV432200267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a8ef562343194d01ca51a813b3db2c7180d702a8d2385a1eb21d8bed4919d83. 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/JPV432200268.
お兄ちゃんはおしまい！ - オルゴールVer.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0020c58b36ebefd834a13c0ad8aa436874c2b0f9d122a35d6d669f4ab6b12fb7. Chain 2 (Bitcoin): anchored in block 957055 (2026-07-07T15:12:44Z), 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/JPV432200271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f692f2f84b94edf59cc74fe3bd8328261c31bfbb660bdf0d7f88eb55b6a2744. 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/JPV432200273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ae488d0c50bf3475d5689cb911b9f2a570c698097b6224da5e449617a7da5c4. 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/JPV432200274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99f4cdae6e376327476c66ed961e4c5fec2b664d46a1b73f94221f7d1f737086. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/JPV432200276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfa5d5b636820800c1549ba908db9e06ec20e44426222b409d9c1721e6b3baaf. 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/JPV432200281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeadc522f0466669cd3571628aac008fc925609ea4cb62c16e85d7eb3660c1dac. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/JPV432200286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1700664a30e898c4caf03788ab951bd2db211785d9c768bef5ddf736d6e54e98. 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/JPV432200288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2eafe975d1075a67f6befa82bb40c4b087eae0ef6eba8684a9c6c40efc288fa5. 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/JPV432200290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7706d3c4ac97a76bb8f707da3128b01f7167b5f67857ff5d664b9fa69af95555. 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/JPV432200293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a5c4a073080f949fa2a7618ce21941c617cb498f1f732953430ed1dbe85c565. 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/JPV432200296.
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