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 0x4278574d756f973690215703e2680f807b10eac512b936e6678bf2571f16d414. 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/5b2bd595-d9f9-4edc-b1a6-7c97a8a8b1ce.json and https://artists.proofprofile.net/proofs/artist/5b2bd595-d9f9-4edc-b1a6-7c97a8a8b1ce.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 0x388fe20894376c34b9301770262825a0b7e3bc30cfa5630bcbb11bdccbcd9f27. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T07:03:24Z), 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/FR59R1722235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a538b87fa3627fccf077907a83a597bb0cc251e0bfe4b0de1c47cf6ec6351c4. 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/FR59R1722236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8f7c20eecfa2f40433015dad0dd70bcacb0f4948d2dba08e56c51e8fadfdd74. 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/FR59R1722239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe47d52e336a413c5df38c7ed9922a898f6adfefdb8952af28f2e03f2949c95a4. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:38:04Z), 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/FR59R1722240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b8744627367d8c2779c0fa04621b1d739868ffe31e71fb02cb14a195879aa4e. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/FR2X41781736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ff556e5ad0c06faa9e421d88cc3d38728fe3535bf729de85d4939529ae29c7e. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), 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/FR2X41781675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf95fc8e3a9f03c322456b40dcd5953c76781dcd6cecfe135037af4e939dca4fe. 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/FR96X1766330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd67786c50ce1ed7d56c4a9a1493cab00ecdf6421ef0ecfcac0ec17cb85daeaf2. 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/FR96X1766332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8169a1fca06b4c827ca7d4e0b02af15c7c5eb8382f8de3843beb267cdb00a6a. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T02:02:16Z), 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/FR2X41785454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca2ae72ac3fdd19e92e1a3dd5f12b92f71f80faa48e171a7f1865bf729e51dc1. 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/FR2X41785458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa53efcc40b00b6d8341fece183fa49314c10414ec83baf7c4c1d0a3a4bff8c14. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/FR2X41781668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57a5da9419703c661aeb0988d093744af4abf88d65279c733705c9e2e52bb164. Chain 2 (Bitcoin): anchored in block 957541 (2026-07-11T08:23:18Z), 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/FR2X41781669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa92f896cbbe17472c8739b815381fbd0c98cc1d43e6c49fd2eb5959d4bb256ed. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/FRX201623639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda7f42fb6632b7cbd0289ab3beb4f41ebc6c8278a75735ea3e679f2b5ff7980b. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:45:51Z), 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/FR96X1693417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f78708bb0db7d45034141c2ae5614bfa55648c418ef4177ececd55c5da01205. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T00:41:32Z), 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/FR96X1693418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7be49496a5ea5d362ab1769f3cd7d5571535bf28fe198ea0367307c6137dbb17. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:07:33Z), 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/FR96X1693419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf84f5ae61e7aad33efbb1ef58d193a4835eb461a8284b8f0f3365be20e45cf74. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/FR96X1683766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bf0e1cbad60c0031b9f70d0466ef102a66b7a947318d33a1fb44bf0d0a9d610. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T18:40:20Z), 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/FRX201601430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7c667acee96925c3537a6f464678bc6790e227009dc8e45096e658d5b047d5f. 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/FRX201601431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fc2b05fbb4ec8b76fc0e97c2fbc8ba63c54bbc96741f8af80e5a32131e5dc0c. Chain 2 (Bitcoin): anchored in block 958920 (2026-07-20T21:01:22Z), 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/FRX761590810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4364681dde0b83354961559564c2f3652ea8e25ea5f5c8ceaa4af211221aef2. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T11:25:19Z), 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/FR10S1655558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfebc89d4552abfebad10f3db35851beab23b37eab1941c82a58c61fc543c32c4. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:26:13Z), 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/DGA072375278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9fa965b4fb0bcc9c61deb2d8729d511e3394e0da17cb09ada53aa489b6f44c0. 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/ESA092506866.