1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x32804d093ac2183779b25bef2f72625d9a9af6e71a5c9d3d97da37572bdd5fb6. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/66f16756-1aa3-4210-894d-05eaaf0badc1.json and https://artists.proofprofile.net/proofs/artist/66f16756-1aa3-4210-894d-05eaaf0badc1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Open Up the Doors Again (Big Bright Day)
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 → block OTSBitcoinBlock must exist at that height 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 0x74640bda828224782229611a961fe0d293ce8ef183fcde23d940c35a097e4f3d. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZNWR2076429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d691f4c51f2ecf0ba8ce6b613ba3bcf2f230bdfa7b13164e3eae5ab2910925e. 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/QZNWY2178648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fb1dd933227f011ea4feb4c0a8e94811501b09e37addbdb98d33d5ca7624dbc. 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/QZNWZ2165264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf25c4f3543f26ef62ffdda97b6039eab3fb38883a89707ef42a435ba4cc58771. 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/QZTB92387426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39d8d5c479cb2b89d8ca12a69688b5b1a53bf26686cca644f2d85cd50fbf7457. 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/QZWFP2307893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e01e1cbc2fe9ee3366b867f5b466bedd2e2e54064aee8514381dce76d1f0c3a. 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/QZHN42462867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70cb7f060eb8602b7356712fdf7ae17d5e362baf1f1793d1eee471c3291f12a2. 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/QZK6P2439824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4aa5106d0a8e62cbf46d7e593a30efb0d16d2e774b7cc1f59723369a40b48fa. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/QZWFL2433696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9635f606452ca53e11063adc4de22f357c40c79b45fb494de55e19ef6b20b564. 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/QZNWW2332819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf104a36fd1cd11034d72dd9ad79dc8fe4846a011088adc30370a073ac39f0445. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:08:10Z), 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/QZTAT2392634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4631a89f056451a83e5c220d7ab51d043ad75640ca8912d6b5adecbe32c0483a. Chain 2 (Bitcoin): anchored in block 957653 (2026-07-12T04:35:02Z), 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/QZRP42447369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf25c4f3543f26ef62ffdda97b6039eab3fb38883a89707ef42a435ba4cc58771. 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/QZTB92387426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa90ca49a60d0bac5c4a1177bb6372e4b55bf161749802101cf7bffb8bdca69e. 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/QZWFU2425278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x079491a2c7f2a37fe7aca48a15843cfb1c6dcff80a6dfabaf2b7064da6c16e12. 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/QZWFK2323833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa16d356de5103010f7cc4ae944c6427e8bb7e87004a9ea608717178c88c28c06. 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/QZDA82516911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5506b0fff39d3529be2f43d23835d35ef24f24e5065a638c828d51b557d0aa34. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USDW10110184.