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 0xf6ac2f531cc6d835495c65ebcfbf65707901c1eb6a72e6b1c6e25c340a5a62dc. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9abad3a9-1a59-4516-be55-ce807d7d91ed.json and https://artists.proofprofile.net/proofs/artist/9abad3a9-1a59-4516-be55-ce807d7d91ed.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 0x6f949f57e4cd479bf671423751bf209b2257ea299c37610aa1a0501e91731f5f. 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/TCAHH2313759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9593b1d23b5e3937682e4040a265ccc4a8e2c98e9d068a462270649a86377cde. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/TCAHJ2343609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d57d8c92fb06cd73f87f511e189a9e1afd2e7186676e7fc39044e7e8308c5c5. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T18:34:21Z), 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/TCAHL2347132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f8e4645eb71e3e56b8dd176e685d95ecb7debcc8c1ebaef6495e29edfeabbe1. 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/TCAHL2347165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b59c9bf7e0a6cbce3beecde17c965c425e588efd4609476f25e7954ab747ff9. 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/TCAHM2396053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2400a92941fdac6e6b3cdfb485a029ef0cbb554d305f61f65c4c18d3e7ee691b. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T04:59:09Z), 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/TCAHO2369928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd462764bb91dd512fc209b8d59dec69580756055cc0e13cbca956b5499208d4. 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/TCAHP2337747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef675b1cf8bccfb8cda36d2b8c722c7167f59f8e60d3fb8fd37865b8e812130c. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/TCAHR2336688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61905db40c0e2ecb247e49a76d8cf9f4f4be1bdd94e5c4899f3c01765557970a. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/TCAHR2389645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x772922aa6bb54b1f0e81b0ab7381f52cad63d23400a33ef074b37b7b8298df3d. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/TCAHS2359386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa09feeb727909410854de2b47bbb30078daf5ba48f750ec4bdb6d71e126a4fb6. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/TCAHW2418356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52df94b8c2c490be0cacf605a9bf06edf55d63d3b0cd7987fc8fee5b603f05da. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/TCAHX2421857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d0244e74308b5830579d44b9ca8eae3d70ae2ba32621ea3bef1f3f438037cfa. 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/TCAIC2425918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa606621bad787da9c809b293d6ec523e57b2dd4292c440362f550a728f9fa34c. 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/TCAIC2426441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28dadfe9935a219a4196246e0edfa12b8db1f70bc965ad9eff68ff569958d046. 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/TCAID2492413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e193fd8293c80d853b6969a34b867556a90c57c2c367f19560c64c6c4445736. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/TCAID2496483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f81013ccca2082013bc8f38e4e6f2fce65ccba79ba26457cce940e9cae49fe9. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/TCAIE2406886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfce601baec85a355d14ededa2f54a146efc3da7c22553f4c356dcf5fdbc1aedc. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/TCAIE2424002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f5f90d16566c74c6e5c8bc6caf406588f5ed562f501bec9631014acc4fb4065. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/TCAIF2416188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65245279563c29196929fcb5dc68f78c0a4df14d7a434b5f32071267febe682e. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/TCAIF2415828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c545411414c86239659cf13bd749d8e8709056c68e3cbe9ede3fb8aa09b4c48. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:39:05Z), 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/TCAIF2415951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7468cc5b80b530d2ae9112ecd5cb0885d68b00ab61d7461722b033eb89d3214. 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/TCAIF2416091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f8ba164bb3bbfad966c0680455a58d4d15f4d29c7ab28212508ad22b09a77e6. 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/TCAIN2413393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53181761af1ad30610ad83f891e347ec369018f210dd54e4af7d12d7e485dc11. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T13:00:37Z), 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/TCAIN2465410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa11c1e8168ed1df0ede21b07bf046d4fdfdff4dad8d511708469d75a4608e58e. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T04:59:09Z), 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/TCAIP2405326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d13b77ff387d6eb0794d296676b3155f30ebff8c13b28425296dfa9367e9f10. 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/TCAIQ2466968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x293f2ef3a6cffc8a5e9747b12c20e2a9584f14da04b063af051e0b754386ca80. 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/TCAIT2469926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa463134248491ee1508ed55c9a42ee6be2e95728d1a6e0d0eb265cdde17b377c. 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/TCAIU2457800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0defc0e240b0ff4efec0fbafc8b8ea4cc8e0ceacb28e82c4ceb67d2d3a06b23c. 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/TCAJE2559403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6272e2b2d35633103b562ce1a3f63d66eda51e522f9c90acc143e422e7086bf9. 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/TCAJH2535388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc466eb0d2207b1cbf72bcfae256510c0f252a718872ed4dd3f2c7b349f3324c3. 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/TCAJI2538703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4bab608ed0c707e08ea611f1cbbbf8484443aa88711d824f6c6d234035f68e3. 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/TCAJH2576530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cd80b873d44481804a2520ffeb130fd12f768c360b277d9a15be58d0f44558f. 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/TCAJH2576806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b041bf2694ececf50d9092bf6708b306da48dcde13fa9403858b5724d6e95d8. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:27:19Z), 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/TCAJO2512169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae2873a1c40b23c7e6c1be11335226ee792cc296ded557d4249026d0059cd2b4. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:42:52Z), 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/TCAJQ2558608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4649400bd5b14572c58dcfa56de7c472ddb9fb25e67d7ba621ca2cbac1d5dbf5. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/TCAJS2590535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73efc3cfc56c172ab165cb75c7f1f167386352943f7047a966745ba2e5aacbf1. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:27:01Z), 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/TCAJR2569953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8193498b5b00c9e17f49861af591e197cbc2a357ecf47b92574235754682a197. 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/TCAJU2514481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c5549bb9157e6cf4f027c1f50600b0c920381a71ab41f1652d43d88f2934e98. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QT6622549588.