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 0x4bd0b00640e6cab330b3ae0e9d9cd2f2619a6594151f2723bbaa7b8badd6f7d4. 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/1b4683ba-af25-40d7-83c2-a4f86454122e.json and https://artists.proofprofile.net/proofs/artist/1b4683ba-af25-40d7-83c2-a4f86454122e.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 0x6c34dcb0060b4a548b1eb246453f3dc4c7799d14a46d0c0596096f5948c6a45d. 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/JPB621800056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6a7b0047b11adcee2f9167f3462c6de4ae44e1af42f97239e9025185c25ddc4. 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/JPB621800049.
Playwright Library of Sounds vol.2 -solo works at home-
This Is Hammock House (House Tracks & Beats)
10 (Flower Records 10th Anniversary Selection)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44d246336a2e32ee98c13f8ad3d56ff63a0b263ba2d0a8de2bddb3e9a7013a5c. 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/JPB600554601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb74b27cca7115fdc4a00ecc5bfc65e7ceda9b61a80749932b779bcd350ed5236. 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/JPB600362106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ca4d50607705094c5b9fcf97c6728386dd790ddcfa312f306d4275239d97965. 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/JPB600630608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13a2134f34e9d9dc401b7e232b950e912182e22dad54d6eda8766981775d04cf. 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/JPVI00134170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23b1e7f79fd8c560acd64ea2b24087935b12f2f3439ba03331c5c61611e28875. 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/JPVI00134180.
Highway Star, Speed Star〔NORTHERN BRIGHT remix〕
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb54a7fe58536036723754d4ca88c3c657229593d338de1ecdeff4da0b29abfff. 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/JPVI00134190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27fcb9daee9025045e84b0dc243cbf91c11f229dcc90b02ea2bf58d186440b0e. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/JPVI00134220.
Hale no sola sita -LA YELLOW SAMBA- - FPM punky samba mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce3e5662cb61e9268647a37181faf0f742ee0a43f5e38a1f125d7ebddc383937. 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/JPTO00400367.
人が夢を見るといふ事 - Black Skyline - - vocal mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb891da24392a00721bd0eb87de6ed3299c817f3052b3b56c21cf991e3258c58. 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/JPTO00400375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe08b9e06f41b0c205d9bd512ab56239f73bbae13d759f241fa99a15bfada5575. 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/JPPO01504684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfda3a63576429047fb5b694efbbd07f9727407f904b61f2cd304d78fe3fc3718. 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/JPPO01504693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3120717190fb0660e11956abd057504c3a8a4abb6a220691268dbab5306fe3ec. 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/JPB621900044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe95057f71a8e30a950d70af718e5daaa98cf2533afa62e0b4b7fa098390cb986. 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/JPB621900052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf3376db3984c84da49c3773d8fea3c518807995394af7874ec0d75a30df3973. 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/JPS801194011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x753c07562df79b069336d8f2d5e6e07bc59c521b0635db1e7cdf22661b8ff46e. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/JPU200600013.
Versiliana Samba - The Five Corners Quintet Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab54e99bce2d298eea88024f241fc886e0907189aeb881d980adb289041c0355. 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/JPU200600024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf163a5164f3f6e11a12946335e8a34c62e41323a000d1ccf351ba4d0fbc6ec86. 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/JPB600177606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbee0feb4f5e01761cdb3586b446564f3bce1e388ab073ce1170ebcf9db7da5a. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T19:09:39Z), 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/JPB600105704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac9131e51ba2ba4efcddc50215ae7201d370198bd3229994b85ce3cce967595b. 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/JPB600105708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15ab4178a35f9246e48d623cc5706a2cf55afc4d72a53aacd1d29dc666343a8b. 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/JPB601170902.