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 0x082bf78f845db4d44c4ce79cbf38ba9c2e7de23e6ab23d1cbbd8097b42a5b177. Chain 2 (Bitcoin): anchored in block 953807 (2026-06-15T16:39:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f4fbfc42-c4ed-4d37-aba8-723669310115.json and https://artists.proofprofile.net/proofs/artist/f4fbfc42-c4ed-4d37-aba8-723669310115.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 0x3aa6d9f91cc1012870ee7ed7005867b02776721cfe484561c96d3e5dc598a12a. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/JPS802353064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a775eb0585a7189b1d9b58a8a90775bfbfa0e03058a63030393d96ccaa58747. Chain 2 (Bitcoin): anchored in block 960339 (2026-07-31T03:13:37Z), 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/JPG102301430.
HONEY meets ISLAND CAFE - Sea of Love 7 - Collaboration with The Holiday
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x298f5f7a7f240956d7a92735f26f88ab6ba5c4ce70af6518bfb9492fa540e4de. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/TCJPR2265136.
HONEY meets ISLAND CAFE - Sea of Love 8- Collaboration with SHONAN by the Sea
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x694510ba9d90a098369d45e823a493def5284e2897ccee437fafc75dbbc0308e. 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/TCJPW2323594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x422577335e09d4bb75dbfd9ea46ab9eeff200bdb60d096efc0ce8a5b91569003. 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/TCJPW2306460.
Swallowtail Butterfly -Ai no Uta- - Cover
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4ba7d3201305e520ef9cae7500c35344c3d210aaa0c709677aa85cb17fe8a8c. 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/TCJPW2333197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5aac25c00d9ccbf52ede19a98636709b620908458ac6af447dc5de050b7752e2. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/JPG102401224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x817a9f4d2c46d359c660c061057a3cba4ffad585365ef895e37342dcaaecddce. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/JPG102400972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd734772580e7274ecde97091fe7419a839023ed230aea4c844a4e53f3d432c7a. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/JPG102400693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e245fd932cce9e69b82b8574e02fa986fec1e6b320c2b19a64e9a7fd07108da. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/JPG102400324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d31deb0ceb6be493129152a254b3fcb4028b1c9fb5eb5177ccdf2ef04844c7d. Chain 2 (Bitcoin): anchored in block 960268 (2026-07-30T14:53:07Z), 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/US23A1573629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ab6249a37ccde7f95742a03097f1bd18fa7b23592dd5aab517cf93a87f7d178. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/QM3DF2273072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f63a7dcf0c21e3cba227adeffb3baddeab946200795cbd941b3ddb9c6f9d3f5. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QM3DF2273073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3254f39b9dab333740476345d20c0914c7013a5ad769cdff81f41819cb65f99c. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QM3DF2260376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86a0313e0c34b03da92122c824ca310f36a09e8a60502b70a32eea9be76f36fa. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QM3DF2241701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f7d86d3142845e09ab2086deae9c9169bf96ba343a6489c8c94268f484e75c3. 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/JPG102300829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0335df2ddf3f180a8e19ddba9a422dc81b567172ae20d4af36f2eec3cbf5a36. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/JPG102300585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00c0e38dd227db2ff328d90cb197c7a6b55424a5172b346b20bd1f5025e6a45f. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/JPG102201255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f643d5ed1d75d7efa7496ce365e82ba47694044f9b44da2eb47b19565af6cf1. 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/JPG102201257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51ecb7d5ae53ba08b19104c677c904069d77f5c9fc42618ddd7682d9bd9daa7f. 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/JPG102201254.
Midnight Whisper (feat. Masahiro Sengoku)
Midnight Whisper - feat. Masahiro Sengoku
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x583580cca2bd6c4647d5c9496202cd1d48b129be257f45bb36cb3802e5bc0703. 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/JPG102201072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ca1d98b28a4295bd50b241057d92c2565018c53927699da76d633eda616b757. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/JPG102200697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a049045793e4ebf7c3afa40b9426ae037a8feb0db72704d448942064381f937. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/JPG102200373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x367f8ca6d09b732ae875289e4519c55cda0ed8a4dfedf0a9caa027c8fdfb3de8. 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/JPG102200212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca8e7a24774e73daa09f09a79f930e9b2887209ca91e887d859aff376b71c844. 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/JPG102200068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b1272a24d4fb687f5348f0c67521bad8f8930620581786450ccce0761ee0ef0. 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/JPG102101333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06b47a39ffe60219b070f9d8e6df9e9d939630c0e1663dc99555b602e48abc9f. 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/JPG102101217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c4dd46b73095d8b2d16d005686e51a4105fd99a2e5bb73919c8c83822ef3d41. 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/US23A1573627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa841f4926260fd089b340ed8473546948ac5a18b0f51843c3a8ee6e9abff2c07. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/US23A1573633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4befe375ac52cb8eaff51d83f055f1283ea8d66cdeff2eeaac9f1a3239b45f03. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/US23A1576211.