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 0xe2be055ea9ef201e09a1fd040b2334dfc807ef7ddaa5f0b3e4287c6d67f95b8c. 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/51dddc44-c879-47d9-ad2e-de46c226dd66.json and https://artists.proofprofile.net/proofs/artist/51dddc44-c879-47d9-ad2e-de46c226dd66.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
I Would Rather Have A Dark Fruits Than A Wife
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 0xcc89ca9c79ef4c1cd9e76c802921317923363f521323cc23a88ab4eefea6ccca. 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/UKXN21967947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c7c254cb374bb530d6021c1e9bbc1be0afd864b168f0a33102fdddd8255fe52. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/GBLFP2177701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf524799a56f7bed6b0f93e62b0dbf07d2eee483c5d5dfb5f2269bad9aa0038b2. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/GX53U2013557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c88e3f5d788bb2172d5d4ca1310dc0cbfb74352f35edf47a5f73541ee62383d. Chain 2 (Bitcoin): anchored in block 958529 (2026-07-18T09:21:41Z), 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/GBLFP2291758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d1ebce5bd248d45ebd51f3153b85dbc691ef6109bfa0a98a61c70dacb72ae1b. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/GBLFP2343984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1474ff42edab6adc06b25eeba4dd818df201b77d934e92e240ab8705e21fb4e. 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/UKXN22366361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1474ff42edab6adc06b25eeba4dd818df201b77d934e92e240ab8705e21fb4e. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/UKXN22366361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f3619aba2dac5e0af0afb4fb3f89f9fd7ab1854cf90762628d0efd3b3a8faa8. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/UKXN22398986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55fa4dc6cbe5599086de80475b0465434a274050328eac4283f49ce3b8eea815. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/UKXN22317797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb067b80ba6dc8510ca61905efdf6f92bc3c5e0ee709e0a757e6456822f257387. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SE5BU2476968.