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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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc534ac00199be1e08869e4506eb4badca4d3710c7ff414176902258368b77897. 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/ba6881c0-ac8a-4672-8309-1d2c2c07b9c3.json and https://artists.proofprofile.net/proofs/artist/ba6881c0-ac8a-4672-8309-1d2c2c07b9c3.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1377a4b7c4d49871268fcf3adaf42413bf093ca7ac3dbed27306fa5d16f26963. Chain 2 (Bitcoin): anchored in block 958656 (2026-07-19T04:04:08Z), 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/GBBKS9200067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06deb60a8fd4514c54ce854fb6e8f72464175edf343698bac4759e650c8eb710. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/GBBKS9200068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2bd39d681d7a4c7d2d0786c54be1ef7b6525cd8b0022ccb11ddd51e6b0550ff. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T04:55:29Z), 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/GBBKS9200121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1529b2ac5675f83328fb443c2315dcf033212a90f948f11780ffa5d6f7a97010. 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/GBBKS9200122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x496f32fddab62e752bc9ffcf85e0ddf35f65427b16426aa8fe38aef63a51b58b. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T11:08:30Z), 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/GBBKS9500012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2126524737db53e8225c213c21fc94a5125e8ad7927b9c171a156f2b8f61e80c. Chain 2 (Bitcoin): anchored in block 957830 (2026-07-13T09:15:55Z), 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/GBBKS9500016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x235959b1ec89c9ece4de0f42d04856abc5310b422bac7f6348a68691ff842e03. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T11:08:30Z), 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/GBBKS9500018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2064d9b1c4b03d8568b9b5cc8573e7fbcba170fb74b9df318f3461eb69a50b8. Chain 2 (Bitcoin): anchored in block 958627 (2026-07-18T23:33:54Z), 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/GBACW1701742.
Everywhere Means Nowhere (Dope Ammo Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf92d0582059a84a397c511b5508e755cd76b73a3eb239bd7f8476a68fad27299. 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/GBBKS9500063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9bddbcc721f0d0023782fe162047c613fb8acc91897d27fd69424c97f4368db. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/GBKQU2520234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x356545a6cda5f21a554faa370bef1090ff56d628105c4315d7ea92b3df6101ce. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBBKS9200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf553d9cbb890a07d71c4579f4eb37656afb7ae176f5585c9170b6459002c89e9. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/GB8KE2157875.
Third Generation Dub - Billy Daniel Bunter & Sanxion Remix
Festival Breaks - Mixed By Vinyl Junkie & Sanxion
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc014495f6b2f5233ddafbf615d36c236193e7cfa43261f0de779fc679b3f0ba7. 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/GBVEC1100178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf553d9cbb890a07d71c4579f4eb37656afb7ae176f5585c9170b6459002c89e9. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/GB8KE2157875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb10b9a15dfc4468b9486ee158c58bf6b7781b82f11f9ce0c76df3ca44b6f802f. 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/GB8KE2205292.
Everywhere Means Nowhere - Dope Ammo Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda46f0f5b9b30f6aed0ce5fcaca1ae4b43b082363a5c72538e1a423403b3c85f. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/GB8KE2205307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bc8e1ae1fa31b4bbc614a08a893864894f5fc71c38d268191219e17f366157c. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/GBCJY1015910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8690f9d8fe66f5288b1ff01aafecfdafcc0e1adcb406c1b214f0373f48705a1c. Chain 2 (Bitcoin): anchored in block 960218 (2026-07-30T06:57:05Z), 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/GBDLM2100037.
Movin' To The Beat (Billy Daniel Bunter & Sparky vs. Liquid) - Rocket Pimp Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ae8bf5000b1eda76b37184cb419b6cc9cd58f9ad07b6dcba0e07a996cfaab5d. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/GBDLM2100041.
The Perfect Dreams Box Set Sampler Vol.1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa354b615a24aa2de182483f6054e6115b1aaed39b2e22dc1c5f8cb1d07dfa5cc. 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/GBKQU2229250.