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 0xae1c388bd39ce60cf3275de0322b43476be9389cc36f5c362d403bbc28b1615e. 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/b78667a2-54ec-492c-83cb-a8a8c98b3e02.json and https://artists.proofprofile.net/proofs/artist/b78667a2-54ec-492c-83cb-a8a8c98b3e02.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 0x5e8e127a1847beb8b25da525083b171bdecc62372aa339ee5b3ec6861c959a94. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/JPJ932200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37bcf9392be866cd739da632d4ddb97d93214a17232b88dd6974ccdadf203f45. Chain 2 (Bitcoin): anchored in block 958473 (2026-07-18T00:52:36Z), 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/JPJ932200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a1059e9224694cf9ba0adf8b55f32ae4ee201d555130409fe04b6b79cafb635. 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/JPJ932300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e8e127a1847beb8b25da525083b171bdecc62372aa339ee5b3ec6861c959a94. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/JPJ932200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e0151e6712038a26a84057ad8a449784bb7ba7306581a0dfe07fd52eb75d923. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/JPU902204748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a1059e9224694cf9ba0adf8b55f32ae4ee201d555130409fe04b6b79cafb635. 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/JPJ932300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd22573a88ccf161daaef3d2f95ac86f9b32e2cee6da74a204f6efee13d1b5bb1. 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/JPJ932200031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40be840fed1133411a501f223d61a767c3058c1b1b42ba3909c3dee0f2600382. 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/JPJ932300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42d23811a7d94dcab585a15ecf9e216125242b4065012ce7b5588246590d2218. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T10:57:35Z), 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/JPJ932300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbece7a49b879121a18fe33f11c18aad32688b8992628d3108305227e53d3c16. 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/JPJ932300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e0151e6712038a26a84057ad8a449784bb7ba7306581a0dfe07fd52eb75d923. 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/JPU902204748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40d4aa8eb40b5d7ee9d537950d09bf2248f0ca2a4d235cd7a16ab64bf05db05f. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/JPU902304020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d67ff79f9887a8dae418be23aa74e93f1c22b880bd40e380512db103fcd1d88. 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/JPU902304415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1aecdccde264c9733ff4bd140bb28daf8996b0152f90ecf057884d62fd9ba050. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/JPU902400773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6026ad01bb563a402fb133fce83fd75a61da74526b6a1f597ca0bb8fe257eb04. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/JPU902400872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f0988be81fc6cf35ba1573f9c9e78fbb6c9f978b477303c4eb82e4f7af5fdf4. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T12:33:53Z), 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/JPU902401344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdf22e4c9f861f5aa3e527a82fb4733b43e810cfdd19e409ed83e6177f6374c3. 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/JPU902305022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4cb53c6d31dfb93aeb4e0315314689d2ee718928f06cf3ab2e2810c9dc22726. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/JPU902305023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6fe8c48d1be539486f4e6e4836cbc9d1de13f481ceb6edf2b58b6bd3f45d95d. 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/JPU902402456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5df5c925f53c5e23f765ba357f92561a14c2f928ebc2835aa74f34b715475dbd. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/JPU902403832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1aecdccde264c9733ff4bd140bb28daf8996b0152f90ecf057884d62fd9ba050. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/JPU902400773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f0988be81fc6cf35ba1573f9c9e78fbb6c9f978b477303c4eb82e4f7af5fdf4. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/JPU902401344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6fe8c48d1be539486f4e6e4836cbc9d1de13f481ceb6edf2b58b6bd3f45d95d. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/JPU902402456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5facb8dd1a1d08e9f4ac20a61785d32ea7ae614d9af14d91596f8c0d7427baf. 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/JPU902304414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ce529fa12fc201aea027294e1eafd2cc29fde3963155f1b766e3f063873ed08. 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/JPU902500447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5df5c925f53c5e23f765ba357f92561a14c2f928ebc2835aa74f34b715475dbd. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/JPU902403832.
Christ ist erstanden（ユーデンケーニッヒ） Ⅴ - Psaltery & Voice
「キリエのうた」オリジナル・サウンドトラック ～路花～
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf485e46920b57233e98ce90dd34fe1b174ef3de1a83cbc22e6d217c4fb2d949a. 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/JPB602303877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8758310d5821c93bd8e4586cf027ca778caf7996995ed5cdf41009b2684ae3cc. 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/JPB602300007.
けものたちの名前 Tour Final - Live at めぐろパーシモン大ホール
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1afba4d8dbc79ea6da63526cc440a41727f3d93bea4af841fcd62bb38478115. 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/JPJ902102240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d7005b5f3dddf0c84e36752b02c1e30be290933af7b3df2fcf73c33afe1345a. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/JPJ901910970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa24c5ebe8f602c078d39460f77bcfd5525890844519e6bebd8ac4adf2d4e7298. 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/JPG102000934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dec640ac6a24d55cf8952be8be15d1d2cea92b32b4dd669cd5b26faf34ec34e. 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/JPG102000984.
Hatsukoi - ft.HANA AmPm Remix [English ver.]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef86a7f4529543580bbbb321b8659b9fe7e597d3120d94a9b22041e0be33c541. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/JPG102200095.
Florian - ft. HANA＋Kaori Takeda meets DUBWISE
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eff1a19712fd4cbdf60c8a3087dd3f6c88b9f1dfd4bb39f8640c851123d2d2f. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/JPG102100808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf085b3ffc2126c864de6c9290cfaf64eadcf6a14772a7f5f347572aa23fa4ab6. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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/JPG102100719.