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 0x9c6dca5e19297670b2177e45af7159bf2f76b5f1e58d5479ecbc955e22e6ede9. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1cc74064-b687-4717-a073-fe3fa43dc792.json and https://artists.proofprofile.net/proofs/artist/1cc74064-b687-4717-a073-fe3fa43dc792.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 0xe9019dd1478eeb5a345b490c7ab703ca7f634f66e00883bb7bc926041e28f3c8. 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/QZHNA1997034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaea82caf930d5c1d83892e75639b6290099909534ddcd31b3fe29c4d687964a3. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZHNA1997036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa767832058aedab9a02bf702e07221cf14da1811169f024ee9e1ab8bd2e3ccc0. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZHNA1997037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaabdb72de393e921f6a6169a5010cc8b4d6e06809c2335bc46aabac049ed3f5. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZHNA1997911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68ca5866e27ee177b562eccccc988170b3b5beef874cc1b8c22ff78c6a3bd3fe. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/QZNWQ2103943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14f4c24a25d943f81886a9b0bca35889e4fa692440bfc3cc0affe43f2955a119. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZNWQ2103946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f5f7045e94729c9ac4e3a7ddf3c4717ac6b76bb3c675187bfe4cb04fa9ce21f. 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/QZDA82261058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe21eabc6a39e3c56f6dff637c742dd4ac725c260200acace9fac35d1b5b3ab8c. 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/QZHN32298344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15653b31a43c7bb154cbed68b01a318837aedd63fe98a762784c9499263da9f0. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZHN32298345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3be754945ff4b2097d8c54526b4bfa759f225cc83ff8699875ae50ea300f968. 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/QZHN32298346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8ff28967c57211c59aca7d1d56dea613e3347df2ab50455cdd7cf66cc3ef9a7. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZHN32298347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x446947060bd18d9ddcc83c23bf32d44727acefaea5b9db4a3cf0818ea33fbc26. 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/QZHN32298348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29f89592e9bcc9235875da9c0e9adcbe6e4363c94ae8a35b1008b327a298ed13. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:06:26Z), 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/QZHN32298349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb37ced2f6f03379ecd70981abdd01c69e4e094885acbdea5f3dca6bc87c3b579. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZHN32298350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc56908095a695043cbc5c5bbb0048a2846106405a8ef44dfd5ff5fdbdf43377a. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/QZHN32298351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46276128d4bbbe8f3c056f9c648ec5892537de0cbcdafc829759f3abc4a842d0. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/QZHN32298352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf776cf8f7684ecd685060d3d891104d6bf592ff55be49104c116254232c500fa. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T09:43:18Z), 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/QZHN32298353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c6aa97f7860c8cb6e2c3e136ce90a38313d1f0c556a2ee1bb6cd95725f55c99. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZK6H2286502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6379d5602c2cf587fb482ad278fa06629382d8259b9740a5857393d41720bb48. 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/QZTAU2284890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1381f21bb3a7f52343d7184b0fbcd3ea2fc49366afa548f34bab695e3af7307. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZTAU2284891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50bcd0307604a7c04aa679f9a9f205a946948b003a8d217c8e560a11166596ac. 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/QZNWW2224362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fab5ad59899237851bff46f8b6004daccf6101aaeaf9f8954beaf2389dfe41f. 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/QZTAU2284892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cca61c7f619e86051eaf70cd7a43a772e83270a2cc6174564dbb6112ef144e9. 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/QZTAU2284893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0268c78daab9019ac55e11cc08ecd881fcca91c02187db8b657e5d276350fdc4. 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/QZTAU2284894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13cd0d37f30d47a17a2eb0c50d7e4ff51d642fce8d0cb1544160c9163311ddd6. 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/QZTAU2284895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5f93f9f5048ee758172599c5cdca0f33c1bda78ba2ae23a70c43c916403c205. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/SKA012300164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15f49479ca7b465b8ef85611f6a3f6e1a725625188a72948355fe06fe44d43d4. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:31:33Z), 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/SKA012300299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c3ea29e0242707fe861baf5df1ad01d8ee9bac90c3de782a776da11e81af329. Chain 2 (Bitcoin): anchored in block 958644 (2026-07-19T02:21:25Z), 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/SKA012300336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe008f8a418cea90030d0a5c5d587ff70ad09e35c078fb519166d9fc572cc3032. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/SKA012300337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30ce0493427874e2f4c4ce4f931f76defb95037e4c437b919de4ce8bd4eede95. 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/SKA012300444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc16be996c9ab4e23ea20fecf11091b2f3f234221cc37551f70d6f57c91ab8e40. 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/SKA012300484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1abcc5fdb0699903505f80c3569926f9d05b303d45202261b360e55fa9465bd2. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:50:59Z), 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/SKA012400019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf458e66c6b541c1ac2b04fbd9dfb3567198b1a2c88c2be1e0ddd71009ffb09cf. Chain 2 (Bitcoin): anchored in block 958625 (2026-07-18T23:11:57Z), 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/SKA012400065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc49ac482cbdd8c2a220cf93561020d635fa5eeb724be7dfca4b4ca4784924ac. 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/SKA012400101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a80921bb24598dd17c4e735d50bfe38a95a4e9c09a5c8ab1c7229c4659ab41c. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T11:49:50Z), 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/SKA012400102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf95d4f9815e0606866b2b1922c70bac1a4650a575733a35702e1aebcfd190663. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/SKA012400103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe80869484edc01dca068008addb225be7830a747552f1669c1c0a810856e05e. 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/SKA012400104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaad0b89d4545078f5ef847a843897368a3afc68b1fd742c4fe8e88c13412574. 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/SKA012400140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9db0f6cb5daf3ff88dbf759827e3bcff15af90baf2e52a3a4947ae4b3a39aee3. 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/SKA012400152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ab7490edf16031360ff32647a0147ae16eebeccde694b0be3333aff6df1f341. 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/QZYFZ2362140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1afe2dec6961c0eb21461e287d17a6b4647d9d819b807b42da55e86da4a68a26. 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/QZN882074515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf37b6473aab7eddb41be473d23960b73417978d9cb433385d4527a08697c6934. 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/QZNWV2198137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd61179446add696f7b0da7766e7e9b526bfe6e4b4f5fe8fbfd57624c58c41e43. 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/FR59R1911038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d37fd2eeb6c6ad0a5cc7eca50f1e9229aef7919c222d7832dab78647f9e6a61. 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/FR59R1911039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a89808acc99d814407d99c244a0acf865b7106303f45d957f350034314ad916. 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/CZUM72400097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7a66b66effa249176322c548683fd49004c258a3393f52f5eab2bdd7153686a. 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/CZH112400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd822d4ba4dcea6747d668be5da89ab45ec9f9f7ed7d100bddd7ce6487da1adbd. 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/CZA232400573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x398a5a397e191c3be7aee5e5e9e43e44ff11afaf0ed6472266cc0e0cecb16403. 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/CZA232400663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf81ff3946a2cfd03e7d1f3b3fef3dda377d20097567e040fdd6a20705f9fd69. 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/CZUM72300835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac9eeced613ec86f0f4a0ef1c5c031fa171e9484a3b37e9ef8be5de61bdeb0fe. 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/CZUM72301585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1c1d3ee25109a5c6c6c8dd65efb9fd19d6efcc78cc1cbe3373f9601a34f0a77. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T10:25:04Z), 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/CZCL52200005.
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