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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf479572e8868ac2513e8b95d6944c3f4bcebb794aad725bdf555511d2c935e8. 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/9c6b2515-7b51-4466-a982-838ba31e6f13.json and https://artists.proofprofile.net/proofs/artist/9c6b2515-7b51-4466-a982-838ba31e6f13.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fba5f3196724d6fed285a6df5b19fb69f6b50315689393565a6f6c86595bb70. Chain 2 (Bitcoin): anchored in block 957759 (2026-07-12T21:46:51Z), 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/JPW462216780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9929840b6a3df935546283303153e6412817426b9fbbb590a9ab63cfd7d51b0b. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/JPW462309915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e5accb186e25ec230c0a6758a1171c633f849fbce9c547566502bc49f2c1562. 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/JPW462309920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24dc9540516e451dad1c424a8d9f7eda59d6c9d8746e3c919e103ba24bf264c8. Chain 2 (Bitcoin): anchored in block 958506 (2026-07-18T06:14:51Z), 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/JPW462309922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93ec4baae98c268848c6a2e38dc9d7976957b93080a4b64de9b0141ca7a130d4. Chain 2 (Bitcoin): anchored in block 958828 (2026-07-20T05:21:06Z), 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/JPW462309923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc66fea6e769d21ccd6b16aacb19705b7ce36ccbf0bffe6fef879804b147bf61. Chain 2 (Bitcoin): anchored in block 958506 (2026-07-18T06:14:51Z), 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/JPW462309924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bb30df18e7f4c3966ac9bb325bc7853178dd1850efbaea0c5eaf99c517933b4. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/JPW462309926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3ff50cb2358c9f09dfc142afd38f3b86e16d541f237f91fa0daae3722a7921f. 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/JPW462364948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbba08fac7b061957e87010003a0290011170b324e2a8a9cf24e28c1188be114d. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/JPW462364949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4f4692de76d77742cee29154fa22a0fb3cac0f615b95e4ff34de44c7f640f7f. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/JPW462364950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc05a6db9bf8298be04cf8fd6acae9b1f8eae64b68036ed75a8e968c0382793df. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/JPW462364952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x232c58eea4c3edc70b5e022942ebdb1789392a9a99e226a1a35e834df3d7dd90. 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/JPW462364953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa973af24221ec8fe6a3fd7d17241f26a51f7cf877b75e1a4c59d287226f6c1b9. 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/JPW462364960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bc9b70dbc3092ca139bc8f50d1b0812e18d55cc49d6340a4bc5f0a352a4ec88. Chain 2 (Bitcoin): anchored in block 958506 (2026-07-18T06:14:51Z), 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/JPW462414108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24cc8cba928c234c8a75f9f531d77923fb9842d95a64da9a5bdcffed99ade94f. 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/JPW462414110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd79fce33bac29f888cc244c9380e545a43d1b7df2350936d4b1e128cfb0c44f. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/JPW462414111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95192d9c1a8f44808ddf5aaadc38f3d8e29f371feb769491483f52f5c3e8d3d8. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T16:16:18Z), 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/JPW462414113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa7bd320184faa8b9adb59a57669774d188465f6f37e0e109cc8c268e3ccde5a. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/JPW462414114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc077107cb522636a46d13a1c09f747cf6869bb76af15a221d367ac109129857. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/JPW462423082.
人生はっぴーふぁっきんまいらいふ
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16b97310bcf8054b7af84ac1f621b69ad138c15839a079c8659b47459395c47f. Chain 2 (Bitcoin): anchored in block 957778 (2026-07-13T00:08:48Z), 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/JPW462590818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea6dbde9d982d2ae072d2122a97b5fb9e1785a666f74e05ab1d6a6598ff948df. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/JPW462590819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22ea8a6d519a34b1b13d1d3dc17eba573c2774941033ffa931e49506eda52fb4. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/JPW462590820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ff0f17eb320057988ac4cd53ad9c4319d0c8387116895c1cd6f2dcb858b4ffb. 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/JPW462590821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3164a23dc7381934683809730ef9616b75ed8de230210656255bd9a38e86aaac. 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/JPW462590822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaa99078e1095f39f292c2e175cc1fccd0d89fbf2002f2f91e8541cb58fe7836. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/JP92Y2508405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dda6e56bebec60f2f58e2cf2cafa516e0e96c1a3c08fa3d72883c5dcb4afff3. 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/JP92Y2508406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b87171e6708ec1cb5bc746ef9de0f289793670242272ef06cd7977944c768fd. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T16:23:52Z), 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/JP92Y2508407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddf20872d84e316f451c0af11861000661ceef874f5c1ad50b8cbdcba6c07f35. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/JP92Y2508412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82fef4712f6f8615c19522b42b5de2c0639f6c966724c6369844e7267c051330. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/JP92Y2508413.
らぶみーきるみー (のもあちゃちゃソロ曲)