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 0xd7edf11ba5ddbb2cc3ec043d84caa5591c2b95989c3361ecd39d3d07abfa6717. 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/e07d34e3-2ec6-479f-a79e-3ed77e3b1622.json and https://artists.proofprofile.net/proofs/artist/e07d34e3-2ec6-479f-a79e-3ed77e3b1622.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 0x0647d173953ab37d7a179d439ffe3d1bea6846901a99c406d52179091acea602. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/SE6QE2492734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95fae8c00549d1f0206019aec086158ad692241c6c591e8b5bce4d5bf979cd2a. 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/SE6QE2492735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e76086c5f171f9917724da3c8654d1491041bfd77aed7c2109979f0a894f1a4. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:37:40Z), 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/SE6QE2492940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d9b7e5e3d194eca12ed04412064bfdcb80b45bf259d5591d4971ba3bdec07d8. 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/SE6QE2492943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8196e01c31169cbfbd2bb1d1126a63886b57cb651a5f938e57585926e9b71a0c. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/SE6QE2492942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6412f05391e77871c9dbdfb5fd70ccc0beb92d00b611ee0fdde3ec2a84a1494. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/SE6QE2492766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1f7786ae6a255a7a1c71e2ad3d51f83c6d3e7808bbb3aae42639e328cd7e899. 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/SE6QE2492951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fff7bcce4f83e9a85042240a6cb52867d1fc53f3c4a5f01b6b93bc9b84fcbd0. 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/SE6QE2498894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ea5f01c477d5a821ba0638e9309510758a6e736afa1130bfacad813302a8f26. 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/SE6QE2498573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7895fc328d42dcd2aa9cb3db919c8c47848b23f49599c7a29962dede6d8030af. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/GBMJG2428807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4fbe5331cad7444b7a8818350263c1165ebce89e0e73b8b4bce093600f45a86. Chain 2 (Bitcoin): anchored in block 958585 (2026-07-18T17:05:16Z), 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/GBMJG2428817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a0368446cfb81c5d45db56d98b1710b42da331adad4bd9f3d6ccfd639c2b4f5. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/GBMJG2428811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6a793ce2aeea6672c181a69752829acccac593788663e1667e528b114b555d3. 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/GBMJG2428814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde25f0e4ab2eb51eee06993952ef5d3dec5870f93ac46404c724b7627761d26f. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:09:33Z), 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/GBMJG2428808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf72cb6f02cf17f830efbc8bc165b6dfebb8e06dc630a0a6e752d0bcf8aff71b4. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/GBMJG2428816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x502d7b63188d7a1a496778adbbac4c9d09db2618f3f72f758b5853832be3615c. 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/GBMJG2428809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c3bf96c1bcbc32a26b595d060b8e6ce904ba4d5460991188552bad446228956. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/GBMJG2428818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98a4aac70f2477e0ed3ddcd338eefa991b48c7f08729c3b2083b13709ea81beb. Chain 2 (Bitcoin): anchored in block 958726 (2026-07-19T11:47:20Z), 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/GBMJG2428813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dad5b8ddfe924834c90681f4747b1d2ebe94fda2735a1cd45f494f25479e9f1. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T04:38:28Z), 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/GBMJG2428812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ffeb410e4071dfc5681a8fecb7dcc1519bee0bf7f4fbe3835aaa434c8c0e692. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/GBMJG2428815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15b2980ad5796ebf448ad968954556f1d177ec54358328f651e593f4a164e21e. 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/GBMJG2428810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6a5d2e09d76fc23d4b65bd53f201cddaba3883f9ba8bc7bc904e6c18fcca9ca. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/SE6SA2404413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bc9efeb1196af044247901b018f52e9077b0eb621f99c9625226b86f8b7fe09. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/SE6SA2404406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68eafcb1303060aa656e427d6d00c7e7b6d15086a0357a15a7a3b67ab02a79de. 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/SE6SA2404409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7c337e0317494ce41e380a10786f4866f1f482962974c8367928f2109de30ac. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/SE6SA2404438.