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 0xde8ae7b1dc6cfbc7d690144e256c9ea02e47f0ea075c13d029d1ebdb987392cc. 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/dc11b47d-df16-48b4-a288-27ed091f03ec.json and https://artists.proofprofile.net/proofs/artist/dc11b47d-df16-48b4-a288-27ed091f03ec.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 0xf78134c5f24b828a9fbdd8e42ec4f135a67fcfd1d5be7565c80768e162c93ce1. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/USCGH2096907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf95fa9ebb2f634c1b52674621250dfe32bcda9a92c0886ddb2b7f68279fa3b6f. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:34:20Z), 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/USCGH2096896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94c7ff5526977acad5eb2debc8a90755a61fc396991bcf94820d54e50de3ca0d. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/USCGH2096897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6517dfb2d3a87516fddc0500b5e9be0f7819b8638c7648bcc8ef8b047df7a068. 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/USCGH2096908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72373740eea38caeebdc39f9ad00bcdca382b037bb6a9e559a942845cdaa12d1. Chain 2 (Bitcoin): anchored in block 958625 (2026-07-18T23:11:57Z), 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/USCGH2096909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b9398958593ce352b6ad8748f9cf88dc2c537c02513c7a91fe38badb201883d. Chain 2 (Bitcoin): anchored in block 957726 (2026-07-12T16:04:28Z), 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/USCGH2096898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x200a6cb75f92f80a332a307f4f4c0f1955286a332bf4cef17fae48769af79524. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/USCGH2096899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09ada4df251410ebb8fab287b1e848976e2a0706e89c1298997f519f79a350cb. 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/USCGH2096911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x190010e80c3f42df3e489af7f21f451e8f065f90a2ad955672e4f7f7b2337c4a. 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/USCGH2096912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5353ae4126f28f5f41d0278072eed7f958762c473da546582aee596d16c65113. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/USCGH2096913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65bd73d3da406221d0343e743d2d74826b031d39068f6000ac668d6f54f5aa3a. 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/USCGH2096902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8ce364d5bd2a872a73b72d7bf0e86622b78d216a2ffdda35f62e62efc8cfb58. 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/USCGH2096903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x280154ff09bf6085343a1553fa5854581a535c0a48657c2824618480d1a0ac39. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/USCGH2096904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5015b627c026cbb6b289c7558221dbf9efa8e5facb40eb6c55551510b2dd9615. 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/USCGH2096915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d3bd18fc5782205e28e871dbd42817be8c712f77875e3daafd6f1e616d9b5de. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T12:38:59Z), 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/USCGH2096905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7cab5cd5aa8ba2af0907e02beaafde87d8d9fa21cbb9cf5cd689c7284fba9b2. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/USCGH2096916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96e5c2e41e67640adf947c1656004992462622ee2f6b907ca0473e8b3435bd67. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/USCGH2096918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6df7550c4479847d17ee4129820708746cb6a45600f29fb61ac39080ffc9014f. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-21T23:41:40Z), 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/USL4Q2013556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1686fb0bc4c2ded58b7f1bd312551f88d09e9ebe72529e85342b21bd68b4d183. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/USHM82159477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91a14ad05f347db5d36c8a0c8ac8d2433f76aa2db88382cb92f382e0c583025f. 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/USHM82159480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5eec9db5d6fe5c9f9819f28d9fa0d141e466335bf13359412d788d8359a7aa2. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T22:18:49Z), 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/USHM82159481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d5f93df0d7f523be92b2d6c89956f7c049dbccfc8289ddc0e0906f68bfb1a0f. 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/USHM82159482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09658e24983dd3225c683c0248b77f9616807111ef6ebca7a939d30e8c82edb1. 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/USHM82159483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e9f2883aff81ce9c50c3e8d9733d5cc845f5ffc1c9c7bec3d043668138b027e. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T03:32:05Z), 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/USHM82159484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8168259ea3eec886c8c16f76e738d1e4e18f11443dc861c0d43a5d42d2957fe. Chain 2 (Bitcoin): anchored in block 958911 (2026-07-20T19:19:14Z), 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/USHM82159486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec98f78a48d2836ced988590daf15ef9779aad6eacfd634c82447807cb80ad35. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T19:56:06Z), 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/USHM82159487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b5dcb28a5bf93d83be0eef440970ef229db5fd14476a1f6511563c8647bcfb3. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:41:12Z), 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/USHM82159489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f8f933586b866fa2db8dee3643c1e2a17e89bdcf0231361a7ad9a8912ac3724. 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/USHM82159490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x302c52012616c6b02c6e999e7a410dc36a3af13cd993f7a411eb795d9baa8857. 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/USL4Q2283099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3438173bfd58c98622ee77177353cc20e89dec63b8ff952ab131f26762d9a850. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T02:22:33Z), 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/USL4Q2283103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9c83bcc6e87515f9bd0a3eed1128d4a2c3cb8ad28c49e6f03b9af5bc6a7327e. Chain 2 (Bitcoin): anchored in block 959096 (2026-07-22T03:48:36Z), 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/USL4Q2283104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ef875a3cb3c8b2f5214539f6ca63a0eaed7c90236868b1052e87ca087ede473. 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/USL4Q2283107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0613a30a86c2aef3a84306d72fc9961aaef6a0eea7386cefbc44c0bc33dda422. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T10:56:10Z), 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/USCGH2351450.