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 0x562b4703190eef5ed4242eab02d2d24f79b2a415f9a618cbe8af294379f453e8. 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/9b6ce2e0-8678-4b45-a30e-86d0e3a37a7f.json and https://artists.proofprofile.net/proofs/artist/9b6ce2e0-8678-4b45-a30e-86d0e3a37a7f.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 0x8020e4a76254c2403a31b8cb110e50194a7f04417a475dd4b5ee6098d37fcb0e. 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/JPPC02412387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0694e98b0a059b5d424b0b76e79fef9019ee20b3178f1f157092a6ef66ca1288. 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/JPPC02412388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4052533b6b271303eebd345851019087ad99af0b8068963182337e9aeeb97de4. 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/JPPC02412385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb272a369e73362742412a0a4fb19ae375b10f8ce8a29597e4978c3183e2c2917. 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/JPPC02412386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8020e4a76254c2403a31b8cb110e50194a7f04417a475dd4b5ee6098d37fcb0e. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/JPPC02412387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0694e98b0a059b5d424b0b76e79fef9019ee20b3178f1f157092a6ef66ca1288. 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/JPPC02412388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac0495ffa9fb77e69d9974dad5a5a174675e6e9171f942b39ecd7c0466c59162. 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/JPPC02412389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba1278b35db4d288d999c1173805a6c51af56c6b7ce0ea3b3c004b2b6cb41ec3. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:34:08Z), 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/JPPC02412390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01b6df5a629784035f9729b508876f21d9a5397aedf8d5e7eca190ab32d095cd. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/JPPC02413267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01b6df5a629784035f9729b508876f21d9a5397aedf8d5e7eca190ab32d095cd. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/JPPC02413267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16063d8a7db8e1713f44dc554452d58ad82d8a647082ee63797a5a938137baca. Chain 2 (Bitcoin): anchored in block 957569 (2026-07-11T12:44:25Z), 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/JPPC02412391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16063d8a7db8e1713f44dc554452d58ad82d8a647082ee63797a5a938137baca. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T05:52:52Z), 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/JPPC02412391.
Ainideaikoihatuduku (feat. HaKoniwaLily) [Cover]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10103dded91c24395aae21a81ed6c5022bf79369ec24e6e09842525596c3c130. 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/JPPC02413468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d2f69c37fee1a542118943727918eaa7e0bb75196b67635ec950b4c6643359b. 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/JPPC02413909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d2f69c37fee1a542118943727918eaa7e0bb75196b67635ec950b4c6643359b. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/JPPC02413909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x910a1fc46b1591ceab548aaec5cd185f6ea9b1489ec6103c268b0df7aac2efde. 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/TCJPD2585776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x910a1fc46b1591ceab548aaec5cd185f6ea9b1489ec6103c268b0df7aac2efde. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/TCJPD2585776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bcdbc98b016548f200638a63d3d7ff206a0c0d350a607baa518bc626837164e. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T10:49:55Z), 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/JPPC02510488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dcef24683d04d7f389f426136f9eafa1f923a3c1975facc9e4505767ebaf694. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/JPPC02510881.
Shitsumon Koitte nandeshoka? - Instrumental
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dcef24683d04d7f389f426136f9eafa1f923a3c1975facc9e4505767ebaf694. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/JPPC02510881.
Kanojo wa Ima Meikyu no Naka - TV size ver.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec2574cf54efb86d7d1d026aa37cf6b637ca688d0850b9ec49f09cef2b590d50. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/JPPC02510829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x079d90cff8f1de4aadf2eeb23018f91de1e4ef6d0b7d0f6b30c1c27ac0be11d2. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:37:37Z), 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/JPPC02510917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x079d90cff8f1de4aadf2eeb23018f91de1e4ef6d0b7d0f6b30c1c27ac0be11d2. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/JPPC02510917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba35d9877fe5864f40b03b4719da7f483617ae220ac11e58ef1800184867dab0. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/JPPC02510913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc62dab398da8390de2cd003f20092d31d8a2aa1a31c256f497570b0122aa50e0. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/JPPC02510914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94989aaf46fa58f793badfdd0beadf3f669f540dc9d36c56591a1d8a83da53f8. 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/JPPC02510915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65fd002f538d6b08839f849f1e02c7522151dd78332f42ee97391fbb884e058c. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/JPPC02510916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11fcb2906e3fd694e0ffc7e381571c090ff85e2926bc7c554f73893e5a025a19. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/JPPC02511039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11fcb2906e3fd694e0ffc7e381571c090ff85e2926bc7c554f73893e5a025a19. 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/JPPC02511039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01b6df5a629784035f9729b508876f21d9a5397aedf8d5e7eca190ab32d095cd. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/JPPC02413267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10103dded91c24395aae21a81ed6c5022bf79369ec24e6e09842525596c3c130. 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/JPPC02413468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d2f69c37fee1a542118943727918eaa7e0bb75196b67635ec950b4c6643359b. 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/JPPC02413909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bcdbc98b016548f200638a63d3d7ff206a0c0d350a607baa518bc626837164e. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/JPPC02510488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x485fc314b74097f7509c8ab29a578e5a58b9361b5756a87c124275fdc7429b9c. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/JPPC02511188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92e9ba797058df28da525a014134b65a83d8d165fc3affb0d4192810d18df873. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/JPPC02511686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f194c9840e094b43d016c83934776efab97766db3cc626943b557af79dd270d. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T23:02:45Z), 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/JPPC02512604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d5720b1448193d71daa035250b4fbb804f3e2e1498ddfd60b6029d01fdebbd2. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/JPPC02512767.