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 0x78b8f70b2021f38beebd22c1f8c516fc129ab13aff3847f1ceb370fcf85ce4f7. 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/938b379c-0a52-4812-94a2-7bffbb8826e3.json and https://artists.proofprofile.net/proofs/artist/938b379c-0a52-4812-94a2-7bffbb8826e3.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 0xc2b59036c6dc1371a3ec616fde7218118a5799eaab8e6f390c158435b57279f4. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/JPR561700147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3f9a8f5fe281de60d733069e983e5f384ab3b6f0a47048e6b9fae3762801fac. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/JPR561700148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cf7ec9765fd308f64afaf918c9371978ae5fe9458c9908516dc853194f07814. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-17T00:58:39Z), 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/JPR561700219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59621c0181e79883e73baf069c0ff0e771f60c2e9bc93a61ab4cb60b5b6c3d60. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:11:34Z), 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/JPR561700220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa1ed80c0773965652b47bf0fe20a56d3143c7cc061d978b8b682c8563ad75f9. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:20:33Z), 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/JPR561700319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b4b9a1ad8fc3c366acefa41c64256dc0a335234c22cfacdb30988bdfff834a9. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:00:41Z), 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/JPR561700457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9f52083eb70ce2639270e6abf1776a6d27cb9279e5758513366a3cb96f70668. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/JPR561700458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa949b4fafd75fc6ee1d84bc1f64c7b722c1b5d490c533f19eabef8f7ce541c21. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/JPR561900017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5a3ca19cab33b92bad0dc87258791cb80c1d69a6ad648928cbcd290bed1dc78. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/JPR561900018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6be37063f746ffc252c39f6dd174acaebe289f6186c72e83e86f9d9a1fde5f27. 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/JPR561900136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40ba99941dc19399a8111b405aae8e357f9a48bee8a7aa90b6886da50204296c. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/JPR561900137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7a30ea7e46b78d3600aef56d9c21615f38ac399a482cac71b4582c0486d7e7b. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/JPR561900301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30472a86a7b77adb48e499e0524e8ce7049485ed29f9a86283a75b14ebde980d. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/JPR562000068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7a30ea7e46b78d3600aef56d9c21615f38ac399a482cac71b4582c0486d7e7b. 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/JPR561900301.
Pastel＊Palettes Instrumental Collection 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x519fbf3e2174292eee849a130b6298a94308301463e2cf1ad39b4b8b92d9c05e. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/JPR562100551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59621c0181e79883e73baf069c0ff0e771f60c2e9bc93a61ab4cb60b5b6c3d60. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/JPR561700220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3f9a8f5fe281de60d733069e983e5f384ab3b6f0a47048e6b9fae3762801fac. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/JPR561700148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x468e84385cba68c1fab47f5c4acf0e6441c3d13fbfab56ce2d450bdeab8fa3a9. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/JPR562100143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa1ed80c0773965652b47bf0fe20a56d3143c7cc061d978b8b682c8563ad75f9. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T09:57:34Z), 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/JPR561700319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3a0037f97440d8939f2b6cc00e8c7c1fe9c59f314f54d1d6657f55c70ac52f8. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/JPR562300183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40ba99941dc19399a8111b405aae8e357f9a48bee8a7aa90b6886da50204296c. 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/JPR561900137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7062237bf71651ba7df969a5b75e2866433a0949a340d3fa0b4b6a0c1738c049. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/JPR562300185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa564be9528816635074645ecb0b90fdebbd0bd1ec28a6064ef2ea91e06c63a8. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/JPR562200163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83d81fe6951966b22fe2f320ba975273f7c6518e032ee269d1b10c8f3291727c. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-02T21:02:00Z), 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/JPR562300187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bc1fcebe38b86a653b7723898eb8afa8825edccdc3444979be93cb7b856bddf. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-17T03:16:50Z), 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/JPR562300176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd4660db4129639bac4c2ca0229d854cc0642b345c33c6014868cc807bb2d9f0. Chain 2 (Bitcoin): anchored in block 957671 (2026-07-12T07:35:31Z), 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/JPR562300188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x240d7b12ee6f86c5dcd5672b52f35b97647dfdf04ba9b6b50c39170dcb0e75d7. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/JPR562300177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2cb57fbfd95053e4d8fcb2d5c44f6139397c80952c9e732ceacc4cd8acdba9c. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/JPR562300178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68d32b5a59c36de1bbe85e9d22c6943280184b7e5a976f7a5302e383055fef38. 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/JPR562300179.
Pastel＊Palettes Instrumental Collection 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x702a6fe047d40b9579eac2e13740f532d633f1ab07410113d37b4c5a9e3c6a12. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/JPR562400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x641c8fa41841d6d55786cf7aeba1716f9654a804ff79a2baf18c55669b637227. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/JPR562300600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1642bbd41cbcf5b8d6c047327c61deeb6251a8e92c90d69518bb53c0a46de328. 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/JPR562300601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3db427a3730c701ad4fe810cf6775e10b2dee067983633ddb5de6e64c81e8983. 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/JPR562300602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x641c8fa41841d6d55786cf7aeba1716f9654a804ff79a2baf18c55669b637227. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/JPR562300600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1642bbd41cbcf5b8d6c047327c61deeb6251a8e92c90d69518bb53c0a46de328. Chain 2 (Bitcoin): anchored in block 958051 (2026-07-14T19:14:42Z), 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/JPR562300601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7246bee344373ee0873c319bc92982adea7103b4c55b47ee11c08d0cb392cf80. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T00:05:47Z), 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/JPR562300603.
バンドリ！ ガールズバンドパーティ！ カバーコレクションVol.8
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x801564c0413827c22e5bd727b2d47b2317db8bd428c6c4353a33b56cb69b03d4. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/JPR562300358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb40d2da852fb3981c26fa1362f21bc526f0f976886a66a6dfaafb418fcd10833. 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/JPR562300372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc72f7ca8de930736a24a74a772d024af36f1628ac54027cfc54430f24cd40c1a. 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/JPR562300359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5793004f65f332bd84e72f4057311fcdc5fe5cbe4202a8f6c0eb773ada0fa5b. 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/JPR562300373.