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 0xad0b6e1bc284f51f7373e9a8d89933e7341c560056a115fc287ab01e3f7bee14. Chain 2 (Bitcoin): anchored in block 953915 (2026-06-16T08:36:32Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/19377654-fb7c-4dd7-a9c5-c1f5f827723b.json and https://artists.proofprofile.net/proofs/artist/19377654-fb7c-4dd7-a9c5-c1f5f827723b.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 → 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 0xc7f2e9b9057de5cc258714b89fb33fcf0145a9f219239ff862063f476bbb6e34. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/FR4E62100200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x861c6ca3305594a9ebbe21699dad803c61288fa935f3c4d9c3898e81d54d5a7c. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FR4E62100210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12d31ec5247d0b432c83b2c382449dc1ae395f758bca6313300700d817a17d20. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FR4E62100220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13be8b93fa0e75c3ecba62aa398bb2e04f9814fa098024ef51f355ed4b33c524. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/FR4E62100230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79c528ed3ac4904c970d2efbd9919f7604ffe8d63f1cd8d8807b3d2a2c731c65. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FR4E62100240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5750ed546c8cfd835db7b5678aee561ebe38bd9229ed111670880655a9cac5c7. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FR4E62100250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x305c9632192f2db4784c784b8a479956f2e907da1e2b526cc1a115d1723b5180. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/FR4E62100260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3c19da8c60713d09f06cd46f21b1b0d09d73967b3a3122ebae3063bf78537f3. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FR4E62100280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1922d86bd0b50873b8b041351615475d2e80187acc83c67d8a17c315e27b58c8. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FR4E62100350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10c268181cfb810e68a2dd94806509832ba7d59fce40b7008b7a728d8173a838. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/FR4E60201300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbadb267f66156e9e3ad7086aff14fc4e8489d20bacd790f487843150e2a92c59. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FR4E60201330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf36b0f5703c03587264cbe7ef746327030671dd75739afd7f7240b97f264a78a. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FR4E60201350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb8d4f4cf8f6ec9061af0d19461a0db76dc3327909e85cf0eb3128745255ab92. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/FR4E60201370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0abdc7352927b92adea57190b21650deee84207155fc59f9e7a9bc76e59743bd. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FR4E60201400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9efcd87832a7ae6c0936f39201108df964c3fbe1962ee7fd21d3fc40cf5ccb5. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/FR4E60201430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36728dd950054a6ce44213829b013ec14339b056c349ef11db72f075630e1b6b. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/CALVP1930260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca7c80bbcf72db013681c2fccbf314942d3b345923ccb3edf9e279a8f864605d. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/CALVP1930263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf50dddc0ce7b846333dac7209075ab5a6e40aded281249303846696bafafacc9. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/CALVP1930264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0fa8150abade5f2d30053252dc0e6fa82a2db19dbfd959b07b2d4a7159b4dd1. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/CALVP1930265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20418376fa2af6fe470d94bece085f21e0c2daf81ca0f565d4319b4421b12c40. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/CALVP1930266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a0e97b605d96429a3528bdfadc710e97bfd03fa5ced5ed869cbc1e4831dbadf. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/CALVP1930269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc9f2045c62b3faa5472b6bb6877efee4b6f9de7ce06d7a8cf542ac8e88f77df. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/CALVP1930272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeafda483644cb699be65a160ced04938fa9187d10ab9ae99308d0e0c6993ef02. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/CALVP1930275.