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 0x6081bd60846635e1ff22d5a1734a448ce0ca11ba99eb79ab3020a479ddfdadbf. 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/fb815866-933b-478f-a04e-fb3724781269.json and https://artists.proofprofile.net/proofs/artist/fb815866-933b-478f-a04e-fb3724781269.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 0xfd6214fbaff37f6cb280793b890b01f5e7fadc040f24e328d01d21252eede540. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZES91849045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfecfbe2caeef78cf717cd48901f2743fbec668bd5dc615bfa0142d6114b05b8d. 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/QZES91849046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5f5ce206cf8363cae3ee85092f8d379ac4642548a967777f2a5851ef94c1944. 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/QZES91849047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12a5c90d39054e553df547c816b19cdacd4e71d195b540363b9f961a469fa24d. 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/QZES91849049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82f7be5b721e9f53fe1a5de8030a51fcba2117a9b1760c2f3fe192117ba33550. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZES91849054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b21f210246b905d65288bcf1e40a6f08b705d4a3f1e2652c374baf2d673d0fc. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/QZES91849048.
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 0x19fb92e4de9849a6a3ade978833a341ce0fca8e74a63f5294e1176e91387e2e4. 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/QZES91849050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa0e88882f22465bc0d1b4c5df097a57c2c4639143135e24b94506758c6a5d4f. Chain 2 (Bitcoin): anchored in block 960503 (2026-08-01T03:41:24Z), 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/QZES91849051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05d05d9197c2cc4b2632878a58779d172542eac71ab5d0ad478ff45084e656f1. Chain 2 (Bitcoin): anchored in block 960173 (2026-07-30T00:11:40Z), 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/QZES91849052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1b61e3c15543b6488208149ce404dee4c9dafa433236771bd70aea27c9166ce. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/QZES91849055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x249a0c02a1def36377bbcdbb7c716e0458a09eae516db1289efdf012fc761b62. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QZES91849056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0653a22cfacb033b1b97afd36494a2fc6550bf9a400ae72b6171370639b244b5. 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/QZES61926689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e475ecc3787233c26cd06b569ae6d42dcbce082b534aeed7fc685db85cd7ce9. 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/QZES61926691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb84a4a7eda9d16f1abdd4b244e46e9de0aa755b27914bb4c33f32454a70285f6. 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/ES88D1900015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd902af91bc94108ce67391bc36216301c11182ce5ecd2da90b600e07de6b80c2. Chain 2 (Bitcoin): anchored in block 958368 (2026-07-17T05:03:25Z), 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/USCGH2256693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5ff0be0df813caeb316d2647aa75dfc0e2e72a08cabd614f62dd7bedb40195d. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:18:17Z), 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/USCGH2256694.
Space Dub_Bungalo Dub meets Tor.ma in Dub
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03c041be0d5014ce2b79b933d69d0138e4d3fa9127a26ed886a2e1079e246c66. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZNWR2404686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fb29fdb1591ed07c57d2e8478eaee1c08d61ea91e5520eb6033b81580ffa568. 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/QZWV32466456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c07939a8ae0766b6dd94303789693212574ff27200ff057a0b1f45df1b1b767. Chain 2 (Bitcoin): anchored in block 958106 (2026-07-15T05:35:13Z), 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/QZWDD2594278.
Dub Pistols present Welcome To The Jungle (DJ Mix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef32d29e0ed2bcbf0541473ea0c702bbbf27b66c41c6e22643db2eb6c4588462. 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/GBFG92100082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5552b96e33dd45c4ff5598c66783c7e59f0b0e987e18da241f43ce3da8c32f1. 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/FR2R02000570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d42385d621c0c6f5fd83fd85fe9994041fd961c7b2593e6d9cc1d5ddc4bb3b1. 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/PLE352100019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ccdaa37cb9589d64b35187009849b0714bd76d8f6c4256dc93a4a137a2d053d. 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/PLE352100020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba50b1e75040cacb3b8921a2c88e1fa2c364c752ca80ac6eefe0766cc025cc9f. Chain 2 (Bitcoin): anchored in block 960463 (2026-07-31T20:42:35Z), 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/USA2P2112664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14432305c0e558c9ffaa6d3cb8fb082707941f9c3e3d29bf47ba72dbbcd4f9d1. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/QZWDD2408970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89df67f8d54233524abf31331b6664dfce0b2c152a6ba8637b7a2f431a53250d. Chain 2 (Bitcoin): anchored in block 960298 (2026-07-30T19:26:00Z), 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/QM4TX2211115.