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 0x9b5f52946baea93d558057c87c78c1eeea254e34a764b3e2b95a39f7543391d4. 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/d4f04c15-f57a-442d-9466-1bef5dad8bd9.json and https://artists.proofprofile.net/proofs/artist/d4f04c15-f57a-442d-9466-1bef5dad8bd9.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 0xe1b8fca30db132257e30c50d159316ab6d19c3224263257170af5dd6f293a025. 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/FRX202212643.
Mor Piya Ghare Nakhe Aawthe Karam Jitiya
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6578a400cfb38a2939d6f49f66ae42ebc3e0b91153f36e2bafa3f7d1ea0de8d8. 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/INT802201530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca474a544bdf9ea07d5d862963805da24be571288eb9aa3a0ac629c2dc89cde3. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/INT802201531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff9e2f1de4fff4e47250f8d8476d844e7057e4ae16ad50d87a2695bc06b0db3c. 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/INN242425737.
Tore Suratiya Ke Dekhona Moy Najair Choray Ke
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1941bc72b130f97dcc46310c8a8aa58dc975a07ab4f00c9d1086479b512c5276. 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/TCAIX2472413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fe1fbf2d82ed83a102ebcd89a6fff345c70367e209a481d046dd82a8427ce28. 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/QZZEB2456728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42c3d7d05c9b8de47ae0024dbee3d35722ad6ea40b9bfa3c69515e6d5d3c7c9f. 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/INN242435421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09583edcfd31d5b20e1b81b68ee88901cb795b0bc04cf1b83b026628cc712d69. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/INDF22402793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f852e7ab7125e34f8f567a868cd9f155613c8d353a0d3df399406c308be6e05. 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/INDF22500003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3afbbeb785653b9602fae13647c098c75fd580c818dec9fdc402efde1554e32f. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/INE182566554.
Chairo Kona karam kar Gach (Nagpuri Song)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3eb26e51a7aa8a1954e29cf69b5d9ff866ef4bb33c9e94c60492c9937f543fec. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T18:54:07Z), 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/QZZ432391242.
Hadi Daru Kar Nasa Ka Chij Hai Tor Aage Re
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee728993fc622e7cfe2b0c885020df89462a64ebe00a3d839fa0fcc6aeb0c213. 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/CATHM2501140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbac2c23dc1212df6bf71fb32fc54d4364a95004aa228528e7b903a216b198996. Chain 2 (Bitcoin): anchored in block 958889 (2026-07-20T13:24:39Z), 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/INN242505575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14b2b26fc1b0ad508169bacb54dfe14b7dc168d0107951a3d0036e38dbac2b92. Chain 2 (Bitcoin): anchored in block 958733 (2026-07-19T12:51:21Z), 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/INN242508035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8383ffa458ab7b1aecf429d24f327f91f577c256a0e572defb5674f46ee75ac8. Chain 2 (Bitcoin): anchored in block 959355 (2026-07-24T03:24:16Z), 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/INE182568486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ca6b1ba8fc2d0ebdade0825e1bf25445c800f276a8ff43f074cbf3222a8c426. 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/INE182568557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5de211b6b2e6893cdd210ee51eee81c161ddd7804a58c879a644ecc0dc64e76. 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/INE182568650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d411fe3ca3f260b63a04b4de20ea1229581f503614a8fe23761d12c17d30f9f. 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/INE182568644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cca86f601cb58abb5a21e89fed06abd0693ce55c943dccac39b39a76cfbb974. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/FR59R2563194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0e84aa06d22e845051c0a77021a91db2e9b960d88e220d68056217315ca3b67. 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/INT802202086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x374d91643e8d03881799d236755cdb1c81ea8edc2a6140313a579344b28b70ec. 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/INN242515146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a349a39e6f3a9e2039f91f92b046ed18e825444237a7e273c5c10eb73fc859a. 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/INR952500059.
Nawa Nawa Chhori Pindhakho Ni Janela Sari Saya Ke
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30a14606b4571af79a90d2de4f3f2f1ecc199993cd9758e1282a30a7db25599c. 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/INN242521315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86e2eb42e1b8b52c8706e8e5e5d31f3e73085992d25d7a7d625806fe793a22e7. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/ING212529774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a8adc8040ddb98d09ad4bf2e645547d007642f5076986fd3a808ff84abc7794. 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/INT802202190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41117048976eab53347cf5089ae5c4dd9c6027d01b324790ad79cf446bbefa8c. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/FRX872510834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe61d504df1af415d70b7498365b78aeeae3408904b0a8f404326ae02646c767. 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/FRX872523479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd58fc1594fd34be67ad9c1639ca5e513fbfb3631581854c9276940620f4c7ce. 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/INN242538637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd526228bac1b3a2a4857fd212986bf1e24ac5467950566f95b3b90c8fcc82b7a. Chain 2 (Bitcoin): anchored in block 958873 (2026-07-20T11:48:10Z), 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/INE182580309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ea0148113c715ebbf8001cd247f2591c5e7c6c26f628cc72f63cb0723ee9507. 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/INV862511557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7a9e3cfd3e6b8f46ba0559b200ea31c4633f2c35f52a0f5eee5eecbff9324ee. Chain 2 (Bitcoin): anchored in block 958830 (2026-07-20T05:30:12Z), 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/INT802202310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4c0e1229159821e75f847e5c3b4dd64e8f306b0f085d145f7ac2a0df9ada58c. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/INR822511592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe18c4928bc1b5d8fe8121416dcb89794cd112027fdd822f27cf38fdc77de33ba. 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/QZPYN2529006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x253ac6aac7c3005f961a733f0f69f0201434334f0e8d98b54d9e0f417b3e9e66. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/INN242542833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdbfe8455326131307e8e4f6fe21caef2f0ed1806bcb51609c9cd9561093d3ec. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T12:33:53Z), 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/INN242543914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x027bb773b5545c0eff10a43b75c51645c37e4025308f2717d99778ad61df5bb2. 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/INN242544162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70bf03a6b13d7f4bcb0dd04ec19152bd9a3932ae0762c3da73701a1e779d1ce5. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/INN242423466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa53afe5aedaf00562fbbd66c17ea929bea34943e45ea826ad689368e9e2d29c2. 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/DGA0H2432709.