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 0xa6386e263b33fb519f71fadf5ab71d88bbe46ddbd5084faaf08635b7f63514ba. Chain 2 (Bitcoin): anchored in block 953626 (2026-06-14T11:41:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2fbfe8f2-4972-404a-8ee5-0233e85eea75.json and https://artists.proofprofile.net/proofs/artist/2fbfe8f2-4972-404a-8ee5-0233e85eea75.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 0x797d14c11d1f53e57b1f7d6b61e207d0e9e9cdbed163e7813439deec9682ca65. 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/JPZ921706100.
「ブラックアウト ヒステリーアワー／狼」
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa87bd8bb517cab26324d44c4a551406233ac37b1806c22e2ca4493103ba81e03. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/JPZ921905657.
ゲエ・ギムギガム・プルルル・ギムゲム
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4258ce37f811fe6cb81278a7ae721126ac11d8699cc56b13d51731baeae68e4. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T02:01:41Z), 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/JPZ922210604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a6e44a0f348809f93d8af227f77d9b075d4a828ddee0ec1082a21e45454180c. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/JPZ922210605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x499a68d9bf0d2c748118bc87785646caec08226319b409ef045df5d1931a0a43. 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/JPZ922205979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a64660574d932495be8bcc48d00d8d789b7abd8a108b449a6f2939c555a5b06. 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/JPZ922210611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x152c76010764d6a0f74c4c716f2595c57beec781080544aacd393af4e73b499f. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/JPZ922404939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca6ebc6126774c07e27fe9727f8fb78d9f4565e1744c0e852e069e329c2bf0a7. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T21:34:21Z), 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/JPZ922404940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0894f0c713cc7ffb7eb8614dafb750fa2b49c0631dbd2485d3e587409702a6f6. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/JPZ922502105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b5f5767880bbaabfb9817443b128e3bab438e5f6cbfac50d4dbc2efb3343f7a. 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/JPZ922502106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0886a535a9589a018a63777dd2b3f0605afab2ac549614277624ea518c3a0174. 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/JPZ922502107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde1b415f5e213a12df6e5199c763562718054ae0f55a7f996e699134336eeaf5. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-16T21:48:38Z), 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/JPZ922502108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7d77f671c3822bf2f5964587cf7fbe3c181b0dbc5f3bb50abc1e04129133410. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/JPZ922502109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf30aa34c7c0bda8ea42a09971e3447891c392dbe645f2ecffa9e3a3dbdcedc81. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/JPZ922502110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50c12e4d566f59e1da0c422eeac8855e9dee839e0953bc5c7e8b83435ecf5e3f. Chain 2 (Bitcoin): anchored in block 958465 (2026-07-18T00:04:42Z), 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/JPZ922502111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29dac1a2a8baf8f930408859c9d5143e3dc124fe72495d950e7ba00b3ae7f8a4. 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/JPZ922502112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8829b02353fb9e0b8d2033747fd34aa2b5bf171e4bb42500aeb9bd1a4eac1368. 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/JPZ922502113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7914a85af1c2c2790d2c93a500d96b925e0b1e70de9cc0598a5cbc970f62bfc6. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/JPZ922502114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52de1a7340b4a3f79f1a56594c1c12d153916271a0c16becef95a807b3ed618b. Chain 2 (Bitcoin): anchored in block 958611 (2026-07-18T21:24:44Z), 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/JPZ922504220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe214d484e1139e594a512c6311483ae4e71a7aeaaaea558b1b8ff34220e7478b. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/JPZ922504221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79cfe1aef371b9ac48e383c13b9aaca234ecd760e852b4aa8e403d01f47535b7. 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/JPZ922504222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95bbc24ef401caab3784e0673c022226d1cdec84ebcefe64c9c5b30c1281ce86. 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/JPZ922504223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53d6b6d06e7491221b9ea399085206f697bf5fd706a7ca0938cff0e7dc9ab715. 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/JPZ922504224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8493204a398ca3e62fe9f7b0327e2dcdb47327d0333299d8752dbe3cba637aae. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/JPZ922504225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e162275ae0544743f1bbd44af52acf2d89b7bd6b9c8c7b69f0b2d23b54c08ce. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/JPZ922504226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49acf5f84a9606428d172053ae27e9e796591d265a0cf3a81dde7f4e7efd5dc2. 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/JPZ922504227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfb6a22825d4e61d8e88d632554ffafaee95b73fcefd94205921ef6d1a17f7d2. 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/JPZ922504228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96c5e3c0e8b971aeef2f7df7d9e082b7678242fb5f16d3dc4e1a6fa985456bb2. 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/JPZ922504229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcb574b83c72e28a876ca1ceaec3af0efb463bc531810d899ed40dde68d3b183. Chain 2 (Bitcoin): anchored in block 958465 (2026-07-18T00:04:42Z), 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/JPZ922504230.