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 0x25f4845d56976fc8feb1580a53acad9b3800519da3bbf20aa5ec865ca9a0217c. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/82f1f478-8fc1-4f52-afa0-4f2178c72a64.json and https://artists.proofprofile.net/proofs/artist/82f1f478-8fc1-4f52-afa0-4f2178c72a64.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 0x1218db31c0c424d10bfa3833e11c2d4000e76eaa4530ef6a3e12c47c960cabe7. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/TCJPG1869138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5936e81a408ee6c5213fe1d78df867e50d2c0b23cbd8d822278c5f11aab62c39. Chain 2 (Bitcoin): anchored in block 958572 (2026-07-18T15:47:37Z), 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/TCJPG1869139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e18c8b927278e8e769385ffe8502ffc10033ed6ab0a0d2e637d65b1d0b745dd. 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/TCJPG1869140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f109b356b0bc9f04c127450d6e0f40d3819279526e3e6c3234922c1b480ac67. 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/TCJPG1869141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ca3da5dbe81847f90a7cba92903fcc577e7be19ff208dd7b930836151a37604. 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/JPKI01817462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0acb92cf707ed631ce822499849b004808461a0b6979fbebecffafa13d3e27a3. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T08:14:15Z), 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/JPKI01817469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7d34c63e3205ad4170f6acf62ac2cf8d56285dae8b16b78e15a37c02d93641c. 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/JPKI01817477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe69e08c410af8dea2dca804e5bba96486eb681d41993ef10d2d2945b61c98f77. 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/JPKI01817474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64af8e7f0cd4d455c721b0939076eb3343eb518bd799398e6baf0f688fdbfbb9. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/JPKI01817470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56af30bd4f897dd049af308555a896c3b11160d66c5f122945815e50120d3a0c. 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/JPKI01817471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4448b9eb14204f139de04d481b8d9486efc20fae768ba220363c78fa7132c516. 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/JPKI01817472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadaeddfabfe94014eb5a2f0542ab0d807b3f589a0b735bfa698c127ce4c49ff2. 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/JPKI01817461.
Maugham at the atelier - NEW MIX VERSION
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6fe4a9b43d0bdd2711f0eebfc649bf7b0f13665b9b0b58698f2ec5e1edea0e7. 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/JPKI01817476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa502f5ce27a2976ee261712886bd85670d4ae5f80060dbce1c2bc89912294f7e. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:50:50Z), 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/JPKI01912768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d1ef0c7a8a6325014b54cbd0832d0e43d9cb0b2e8caae78ebbbfd35e34f1299. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/JPKI01912762.
パプリカはポストヒューマンの夢を見るか
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34d1360bcb15f17e687e30a9eaf1cdb63d6df5d42a0bdb103a86a4cbfa4ca62f. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), 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/JPKI01912760.
モノノケ・イン・ザ・フィクション
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb72387fa797552bf851849e66503d26b7362b252c23cb683bc70413f7acdf784. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/JPKI01917158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb28a14854719dd9bcbb6b1659e023e87ffa2d68ecfb6206fd8f3b76774971c6. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T08:56:52Z), 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/JPKI02012066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaa9d725e5e52c61182e15855ab9ef94d6f480aaa20e1ad2f5433fb9da3db097. Chain 2 (Bitcoin): anchored in block 958378 (2026-07-17T06:45:39Z), 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/JPKI01916690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa0bdbc233513cc6e288bc194d54a6b5f1b83437d082a40ffb2cd3f83b0539c4. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/JPKI01917159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc50a030784f68c910ae5171bb540ab5dafcbcc0d3b62b2b500598ccda5b433d9. 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/JPKI02012067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x032b2bbce832cac6ff349411cb9f201a7e1ca42792eea1498434f763a7738b6f. 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/JPKI02012068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0367c15f8a115582cebe589b2829d38a2686c252b87a384da6f55516347fc379. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-21T09:08:06Z), 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/JPKI02012069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c1656d9acb880b534868616d46f8fca96bc35b285dc638e75c25b3a2cb66f66. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:02:12Z), 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/JPKI02012070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cc70a0b319c862c2d3d74bbcb9e1e4953f546b20a3183625be79712467656ea. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/JPKI02012071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4acf7a9eb90855b5bcf7842a01d0a94d9109e3fba8c722a6c4c8c016b20f51fd. 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/JPKI02012072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a2a3b96282e9bcef524081d9be6d565703e38b4e2017d20d33014b04c580d95. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/TCJPQ2291371.