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 0x502eabe2ff68fbbb9abd4949d1029d543542a965b3e297d9d65b34a80177d04f. 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/dd6e80af-6083-4cd3-94b9-71c13dba1396.json and https://artists.proofprofile.net/proofs/artist/dd6e80af-6083-4cd3-94b9-71c13dba1396.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 0xf0c913c250019a74c0db6eaaf0e5c97a7793c9b34ab040269b206321ec11cc66. Chain 2 (Bitcoin): anchored in block 958816 (2026-07-20T03:51:05Z), 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/FR2X42513468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd877f77bbb4fe6d7f914bb243ce571c9d0e8b5b35f1c1184abaa21cdda2991a7. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T02:01:41Z), 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/FR2X42513470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2df4a17e25134baa07cd688671bb4d4545247a4d8c27f44ca1ead210c011bc57. Chain 2 (Bitcoin): anchored in block 958558 (2026-07-18T13:44:16Z), 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/FR2X42513471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4dbd9dbe67e7731283e5a0b985014ebd2c9b1f9410b76feecd74e45bc41f6f0. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-19T22:59:45Z), 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/FR2X42513472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7794d26a9d887cda960b2e239c844bebdd9cb1e952af61c97c80368d489504a7. Chain 2 (Bitcoin): anchored in block 959002 (2026-07-21T11:47:29Z), 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/FR2X42513473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6253b22af7edcda116796f74595662fce3f6f9b7d19aa091892b3122e96c31c. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/FR2X42513476.
в 2 раза больше боли, в 2 раза больше любви
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed687cb696e9a01ada4ce4d9401498697fc15aed4c34ef47ca2f54563cb0d1e8. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/FR2X42513416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9da4d1dc4c8c2d1e9f090d659ffcbbc76ea6f95dc43d6a3f669b086100c0691. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/FR2X42513417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd33a552e87491de33f98b08f464320aed69738422b48b845e3e06c66e241ec9b. 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/FR2X42513418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbedc662ff7f4dcc3f84025e8df11ec00f9fbdc757221a6a5d5eb82d0bc5b1817. 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/FR2X42513420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42fe64c18e01467c5171fe68b150395cc884438fe754b3b2a13e534050d973fe. 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/FR2X42513421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79564f72f8dec78c6cc6c3a6989032a835c7b0c462c9021f0850319b6628bed5. 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/FR2X42513425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5f419f5b0f191c605b75bf9a79ea8c8eda9fe63116afbf6ff096cf8be98922e. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/FR2X42513427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79b5107b35aaea05a39b32ad9ccd9f8b3800b4970929ddc9b7197ce28a807d0c. 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/TCADN1809764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x073c86f56a1ee2d5b2cd2b751458d66d254a24ca15f24cf2d4d5ed915c16c075. 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/TCADN1809766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bf8880a597e190108acb9fc5a46e31b61de3a50c59e85fef5b12d9521956911. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/TCADN1809770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d3e1e3b9781bdc3db024b3060724edcbcd248500618ac58e4c0704fc9b37f60. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T08:56:51Z), 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/TCADN1809780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b2307afb2058bfccbacfd0df12433bc09cb3e70d3f2edd6493788255441f71b. 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/FR2X42513436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f95413de3e480fa9ad352dc6bc68a75d373568bf9ce30f9d50e721dfd78523c. 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/FR2X42513437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa127132b8ad62b2c4ea7f9b53892e76bd3fa49f9db67652914a49476e91f24e5. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-02T22:12:38Z), 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/FR2X42513438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99ce4e8feb6002bf8a6371140e6b1f4f3623c09a811bb6075d0066caee129ad7. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/FR2X42513440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb51c451793fea4442569526c34d44024be58b846a71c9300a6a138504f99251e. 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/FR2X42513441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x338db5d6e63cc8dd576ffbd3bfcfc07c44badbfcce9ca75f8d561d13b85110d5. 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/FR2X42513442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b384805679c335d4921f274d471c8b01da72c133e34c0192b4c4b54072b3e37. 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/FR2X42513443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd65a93bf6b9bd35e0015d39db609d5ff7b7ff62838f2ddda62c9fbef479778a9. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/FR2X42513444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x168e83825bcc5e9b7eacac88b3778d388643af2c64812590b89cf767b8e1fa90. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/FR2X42513445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54bfd23396dacde48b1bb2a50ed623f5ba84f455ccf3e57187fc5ee3e8292198. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/FR2X42513446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31012798ecf10b460951920343be69a6bee79072342ecec3863b2c0a6594f6ff. 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/TCADN1809808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x737c5860531f7fe0fb6c9affc9f676261fa65382406c1927eaed0766147eec1b. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/TCADN1809812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79867097cdaf4d921fdbdf1578fc0ac1aa6ec9bc975446fd8afe38b56ebd3946. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/TCADN1809815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0882d9cb3891f39547a838ff525cda5433a77626dfebf935b035d02323cc08b2. 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/TCADN1809830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37de3adb4282aad70cb266a17416a6f3f21a5a5425eb2bf2bcac8ff2d5ec6f60. Chain 2 (Bitcoin): anchored in block 958590 (2026-07-18T17:28:56Z), 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/TCADN1809834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31012798ecf10b460951920343be69a6bee79072342ecec3863b2c0a6594f6ff. 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/TCADN1809808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x737c5860531f7fe0fb6c9affc9f676261fa65382406c1927eaed0766147eec1b. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T15:31:18Z), 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/TCADN1809812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79867097cdaf4d921fdbdf1578fc0ac1aa6ec9bc975446fd8afe38b56ebd3946. 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/TCADN1809815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5362626a2146d26b0100c9c36d41a389649cb754fac7be227b9d6e7dd77ea49b. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/TCADN1809818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2700669819828785a5c8b84f9bb466d695aeb556e8384a17679747781fae8e19. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T00:07:05Z), 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/TCADN1809822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24e3b885429eb460d6a2283cb07cc1b626388d0b56f54b823d59d6cff313cac1. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/TCADN1809824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x602edbd029319e6d65dcbac212e4f046b5f2398484dfa8788a2dc051f9df4603. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T10:57:35Z), 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/TCADN1809826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x362ddff927dd5139d5055b74eacfeebc70862f05228b83ddcf1081975f60436d. 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/TCADN1809832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd1ed4cd88a352e1287d2de17790a7411d02380efa9047423879e51e370195f1. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T00:35:28Z), 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/TCADN1809837.