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 0x6befac24ae5ac176b9cd8ba9fa29ad458ead3e89ea91f25fcb7402e65c2b3ce7. 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/b6422b4a-291e-49cd-b466-4148a3b1e6fd.json and https://artists.proofprofile.net/proofs/artist/b6422b4a-291e-49cd-b466-4148a3b1e6fd.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 0x7268b7bae95763ad581ece97425ee5c31e624c4cd91c12a5534125b916045117. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T08:02:12Z), 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/FR6V82094909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6f4fc0db73a95d12492e47003e4873084014e081fef9961730bfd9a24c53408. 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/FR22F1800070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x666dded844a01939116d7f7c7ae920bfdb0a2f05bfc1a1377a95c85f449c7bff. 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/FR22F1800320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cde0709b17f21772cb6e4b75e07beff6dae8bb6edf1d826c3553ad5c1747254. 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/TCAET2054971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0b53315637b4ca21bf2272d5ba9a0a847398b3d8f95ba239ee76871b7ca51bc. 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/FRX872002374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2d500cf6052001314a484b831cf80aa2bd1ca77990fd89b29809eae36658fb4. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/FR9W12034944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfd173934ed02fbf92bfca54890b51221f33ed636df75820d1a786377d6ba3ff. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/FR9W12104516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80e4a3f5ce3f0d5e8fd495a9e89ab47c689cf65655e8eef905f441a1c267c878. 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/FR9W12104574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49f7ef1757bebe7376b855d91114892ac3a4851aaf7c97a768f2f0e2898d2545. 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/FR9W12104521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x534ac6ba6582b132e3d61a233e8ed247e5c20a77baa2841c5d2534bdddfb98df. 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/FR9GL2200320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7550c02e3e4895902db7dc6de2061f29ffbac03a2f44289af776cbc439a033b1. 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/FR9GL2200250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52e6d721fc82dee4b0052461010743b4b61707b7afc64d3a1fad5c45f06068e4. 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/FR9GL2200200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedd03e7ad3616c274f189a33e76284cb4143cdb99604a55dc60530be41033c82. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/FR9GL2200290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c48747dd02a2829940e1ab43e20a8c3bc34ca2fa7cf08fecff05703589fe5d8. 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/FR9GL2200220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadf07cc5eea8e40a4e6c0c4fabf8748ed9d7d93186f342fc138c9a7782206aa4. 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/FR9GL2200190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52e6d721fc82dee4b0052461010743b4b61707b7afc64d3a1fad5c45f06068e4. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/FR9GL2200200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c48747dd02a2829940e1ab43e20a8c3bc34ca2fa7cf08fecff05703589fe5d8. 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/FR9GL2200220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80c97af17593770dd0220d0641fd7c16ff38067680bff8e4fea2d5dd0b592444. 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/FR9GL2200270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57399f68c6c1f878ba8b535a85019a112a1a97c7de71b2ecba3ba53895a8ceb3. 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/FR9GL2200300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x534ac6ba6582b132e3d61a233e8ed247e5c20a77baa2841c5d2534bdddfb98df. 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/FR9GL2200320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1f628ea2e5df674a18108849eda0c047d150f60e6a18f9aa5e7abce6c891566. Chain 2 (Bitcoin): anchored in block 957867 (2026-07-13T14:55:20Z), 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/FR9GL2310801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11d91a5b9ae9493b0d092f3562f6638a72713d5090af0af92bae3a85e1777586. 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/QZPYN2462107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53dbe747f02b9383f4b55ea70e1a327b7312fa5f3df1f71d1bcf3d3f65713f45. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/FR9GL2407070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd041aa23a7d57110ec44767e7f1832ca643df0c83a73a4676eb8e33aace78a86. 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/USA2P2420295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9e6232c470324ba5a94a995c00a3ad2004439c8efd53ca060294e71cd354c9a. 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/FR9GL2407786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8b5227aef9843cfa52a66fa656f6428777fa3cc8fa666566c8b312ec36c9360. 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/FRX282328590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d7ac17ce0d910b48496ffd4a281b73a472c3d4105b80e07cbf0c3227ba9c127. 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/FRR642300473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd5659ff0bb93eae09e497869228f4aba65ef19d3e2e1b47090df1393275a58f. 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/USA2P2234242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0aadc033139f7d071079d06499f7a5675f1bc40b7a27084c5ae19598b8e60c2. 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/BEE202100200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab0d91566496499c6c4b5253d5b2814245a2ba05076bc06fb90b7888c53c54ad. 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/USA2P2360847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04d447310cffc77bd687401ab1e44f824f5887efc05a2755dce1977a4e3705d3. 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/USA2P2237247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dc32c7ead3be57b9e266912822f8aa73278a7df59e8a65a00cc8e21af867b73. 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/USYBL2402346.
Kontor Mix Session #02 - powered by TOP OF THE CLUBS
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6867b6a329fcd5e430aa1144b463e0c888779f5cf399a07b06f015b6ab3e6bac. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DEN061800319.