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 0x2fb2ca839232f0ab2046e55c2a3b193f60f199a935bd14fbbfa1c90e9cfacc62. Chain 2 (Bitcoin): anchored in block 953762 (2026-06-15T08:21:23Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b9ad7c1f-8f6d-49d7-a8d1-4ce41706b135.json and https://artists.proofprofile.net/proofs/artist/b9ad7c1f-8f6d-49d7-a8d1-4ce41706b135.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 0x481d68431b53019d9967184adf8513ff8a24774b849dabfdc819655b12fed98f. 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/GBLFP2552195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba6d2154a6770d9dfcc154917237c8c657a37d7af0553d3c7cb7386e941e40e6. 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/GBLFP2552196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1c5dde742799671fe7b9e6f0fb72f2619e1e47c5f50f30f6b44b560a8e38ac0. 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/GBLFP2552197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a7f2e9e542fb19145bb2b93cb32a778c58a9455e34bf061c6723761c3eb6fef. 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/GBLFP2552198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabc0edc153b72e8077ed22e8336265145e5ec319135c19f798a6094511c4f460. Chain 2 (Bitcoin): anchored in block 958473 (2026-07-18T00:52:36Z), 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/GBLFP2552199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04671f4683ad2e7ae4726bd739e66c580874c22d00ea94786a95b34a2a8e4c08. 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/GBLFP2552200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b7e4875ba004abeba8925102f208018457a0c20fdccf6f2b531cc2dd47878bb. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/GBLFP2552201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5665ab87c891c9a5743737eaad06f73cfc6baf3d47ced3385cfbf66f89e8d222. 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/GBLFP2552202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1137a44ef605e1b5b089ece30b835cfdfdad3092c02f261913a33be0f64173a. 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/GBLFP2552203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae9f3f67bf4a281d5768d26751e709e335dbfac7b67c05639c32e82de45b2014. Chain 2 (Bitcoin): anchored in block 958644 (2026-07-19T02:21:25Z), 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/GBLFP2552204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5d9400b98d0a77447748878ea37c95e002a6c964a32e385671dd48aac0c75ee. Chain 2 (Bitcoin): anchored in block 958590 (2026-07-18T17:28:56Z), 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/GBLFP2552205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x024de0244c9f9da6ff7e59b2f04cfc8606950e89bffbc7ddd1d50424d5062455. 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/GBLFP2552206.