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 0xb7f4f40653e65f5679fd3c52558625063905dcc28e479ef2fd832bf13f7a753e. 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/73c2912d-5962-4a56-8f47-2970dfdec84f.json and https://artists.proofprofile.net/proofs/artist/73c2912d-5962-4a56-8f47-2970dfdec84f.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 0xbf426cb04d1a55fa5103bb7f188751c82b9bba590abb41ab13b9afe3e726b9dd. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/JPB601401898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc664fcf9507206755ecfa922363155972dc6326285a6cc9cfee4b15815da65d7. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/JPB601402002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c47676b856f642851cd9143ed41f6d072f0c4e16c93fda66db71e89c7ed503d. 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/JPB601402001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20523bae5d5ece50e187df5186e363540f16a29aa626c74c828eae126fe9fe2e. Chain 2 (Bitcoin): anchored in block 958903 (2026-07-20T18:19:43Z), 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/JPB601502599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04f6ca1bc8de0332c6f20c021b753c4b67738732b21c8b022e35a699f8059c43. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/JPB601502601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d71a3bd9d471b2109a0b1a2b874008d7c87c6b97c02af4badb8237201923d18. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/JPB601403744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81e1e2b6bc3abe60df0e02c4d3c27e308a6379948b041031141490b1d89bc95b. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T18:59:58Z), 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/JPB601403747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7257d62f5994ab972858d53ee69c32f8545270e7cfa144c4ceb32db2b122117b. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/JPB601803033.
君に会うために僕は生まれてきたんだ
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7e6f49ce3a36d51bee0b78f48360506cf07eb89290a94518974b8030d9882c1. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T01:50:30Z), 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/JPB601901117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d867d89bfa6af048409d9f5d2bc96498631238ad0a42b50215efe36729b4088. 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/JPB601801147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24d5731ba30780df98371fd39da66bbf1a8414d52eee5f52234dce55d6173dfc. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/JPB601803031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x796e9620b89a783840dbb66c8f570d95b2ddc618acb59651576705c1398a741b. Chain 2 (Bitcoin): anchored in block 958706 (2026-07-19T08:50:34Z), 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/JPB601803887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x064a50c8761227f53438aca69e8983d8c35e55da55e9a6db9176845d5d79497d. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/JPB601803029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x937a552da83c872a26e5cca51bad54d664cb66118217289db687d3fc87462ccb. 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/JPX522100114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66a84aacd2917858dd321d9ac3840239634ace1dfbefaf150b5000c97d23fb45. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/JPPO01803611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e7ae0eeafca2dfeb0113d8b31587376f2a924f577e64c75ef38392f2d00196e. 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/JPVI01640560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ecb036a2deee6cff0f20d7ea505392a460dab0a76962c4f01cdf7062751b85f. 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/JPB601601500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc6d4ab17973a04aecccbe8c8b4b419b6a6f1eb2299fcd9215c6dd16329a5e88. 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/JPV691700001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe185029f1a68e4b2485a31cd4cfcac2a46d39b2ba6df2a5bc528f43ebcc1c3a6. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/JPB601501007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfa3eb47819f8cca335189a284589056d115c31b33f1bcfab84e32b254b5cbe6. 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/JPV691900010.