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 0x555f5cd34deed2634065babf0619f9635bb289f61aab326b2faf439c5f9c012b. 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/728992a6-2c2d-4915-82e0-e98e7bdb18c6.json and https://artists.proofprofile.net/proofs/artist/728992a6-2c2d-4915-82e0-e98e7bdb18c6.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 0x58695db004115927c32025ee9ee90c5ce9e10625175d47aad860bf0fa5ecdefb. 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/JPTF00808704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa063793972689d49be59b5ccae8bdde298ea41690933149be318139f65d51598. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/JPTF00808708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07a09fa802a5bb9b11a7f476f0ba57ac2c5442e3ea8518bf842c589a542ad150. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/JPTF01001910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c0cbd832acb02738b42e3fceee07afefb07befd9e7fc79b2d3ab554955277eb. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T05:49:39Z), 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/JPTF01001912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7cb6f3d4a571114ab679c3bfae981e91be699dd18dd6717b87c86149f491ded. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/JPTF01214901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4a0cfe59c9404832b594549907635cb0b8e9ebf8889ceb8cbe97edcb076060c. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/JPTF00808709.
きっと僕にしかできない事がある
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd83696a8a6224325a1c937c498109f2898412a0e77077d30481e7a52e80b0349. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/JPTF01305303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1044f99027333480f0545c6d9b2cb930615539a90d14cebd887e4c2650b5ba68. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/JPTF01107102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5730558020c8e79b11116fb5656cdd1fe95dabab294a58b3f79d63cdf731ab37. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/JPTF01313102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa96f8e9f2d8488f11bdec355fe4dec70e62ec1370a236c8b84c924c8fb9a9cc9. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/JPTF01406401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0059e457b62f6cf00dbc10fff02ca41d14e1a1a2d9f0138ea4608e986f4f6937. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/JPTF01607602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d3b543aeaa5c58c383c232887e9cf557f55eb502e06ee58a2c8517ea38eb752. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/JPTF01605201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e90e542ee43ed11f8fbc7ba6ae38d8eef7648b2929f6fdc0425a846e9ef0713. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/JPTF01305308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b5834105fc5e50a6a3d24e59bb6cebe32b4acbfb101a9a5c74e1c6585aa857b. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), 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/JPTF01402101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76a32fd2e9920da8f5376cb0b1bea019bd3604bcf0732b6e283cd20adc7e03b3. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/JPTF01607603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdaa98b8a3a6b7f80fd35a535bff32c42709e4feb9b4c494538f37ece7081db6. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T05:31:58Z), 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/TCJPC2425166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38f1c4345ce360bb5266cbc317c1e77accac368fc2858a04ef2b7f7011d6c12c. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), 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/TCJPC2425171.