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 0x4ed329c5092ed7ed2ed003effec993a509ad032d8335ac95f603bd5b8359ad91. 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/5dd3e14f-1846-49d2-8257-92d42828a26f.json and https://artists.proofprofile.net/proofs/artist/5dd3e14f-1846-49d2-8257-92d42828a26f.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 0x71db679945ea26b708f0856ddb67b02402d5b70e10d58a1788bbc1c0ab12852b. 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/FRX872395408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ad902d168c4d303bd5b932991e952400f7cb71c078e9998156aff4280e7dbce. 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/TCAJB2442648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb79619ab58c4f22ea3db4482167a1bae6b7563b6e6ee61b4c7ef849af4e3dbd0. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/TCAJA2442555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b8b0becbee45e5abd70e10e03e79f3ad61de44af159d337a408baf53dcfa9de. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/TCAJA2442778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9f46afe54dd1b7843051dbc78929ac779071900f1d6ca73b08e6fca52851e0c. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:04:15Z), 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/TCAJA2442833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50c528c6ef9f4f043e047e688c480db2478c710c8dcce8b3bd41bfa6345cff66. Chain 2 (Bitcoin): anchored in block 958473 (2026-07-18T00:52:36Z), 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/TCAJA2442580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0315e6ee251103c369a2cf65671b066604b04a6d762dd4ca212785e0c1054c16. 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/TCAJA2461226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc67fbb46471d8e76cb13be7f339e1faa76bd25dd4e4fab43385f9e4ac4a9256d. 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/TCAJA2461263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0058ede9e6cef8d27a28eb5b7fa7faefab6333f96f61a874e00b21ecc368d6a2. Chain 2 (Bitcoin): anchored in block 958861 (2026-07-20T10:02:52Z), 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/TCAJB2461139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5789d1f3680b8d201caec4e89f4cb52aedfa3fe7d0846565a46304a2be0ffb18. 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/TCAJA2461121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1bc8c49954196fa951e0da9dcac24b079a900a2d343f382e0ec9d25f807f096. 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/TCAJA2483386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3b91b813c6a181a30fbbdad376eb9e041445205a630a74e90fc51dc7a6992f5. 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/TCAJH2531825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1f19bdddcfca1a25f3405a73fc33c22f5338002d1136deab5c7d22492ee928d. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/TCAJG2531893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37b004cc54957722b79431e4531631a6c93ba785f289576b1d94e628c4f2b8fa. 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/TCAJG2532059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3c18ce9ddb8421f9ec4fcbe914b94dacbd0a7e8ee6c5e21aee8dd64f5370bac. Chain 2 (Bitcoin): anchored in block 958116 (2026-07-15T10:01:04Z), 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/TCAJG2532074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde2ca4209b12070732fef18d84710cca3f2b88bd6136aab89c6bf2ecbafcbc8d. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/TCAJG2531873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1487db09461d92d6031673487588021fc4db89d2b700ea6dd231418fa3ebcc4a. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:05:24Z), 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/TCAJG2531798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd5723dbc3e5fc94678ad40bfa73f5a2066b878674085146684c6b7ad4fed4c4. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/TCAJG2531937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87ef047a192d51497be316d3eba3ef288163d7f0d1f1960d58f32cd897046f93. 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/TCAJG2532006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa64946a4341d777403e2f0362a20e45c6baf95cc467914707962c5ec10c7a513. 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/TCAJG2531903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc94f5ed231e2dc925a984b29657787f3d5ded56574ea4f4f198f3f9ee79eac50. 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/TCAJG2531926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4659b97313f4ef091d41629e26d08a579e9ec337c85f4539a9ce933b97441cbd. 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/TCAJG2532105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bad0764b039d33d86e1f63d99f1358aed82fb3b3a2be9da67077d76f6766479. 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/TCAJG2531981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d1e2b0a67c53a52a7e0fe9a44b20724168af20fb6f84348bb0921470857d7b2. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/TCAJI2577465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c20f759aee7434f7f8e49b88005cb0892d9ca599378710001a7d4c6da8c98b4. 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/TCAJP2587595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12cb2d42da45756cce939401fce7d17f99b9bc89c7151aeaee0f8a34eb84abb1. 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/TCAJP2589597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x573b70b7cd0170ec490a095150d0e1dc0944444586a2761b69077d54a0ad7910. 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/TCAJU2585653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca0845755a41b7c53943b2a6421e0c60bf81cdd00d7f4599b9ff71b0cb3a68be. 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/TCAJU2585629.