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 0xdbb6f252f755132df2f0fb43e8bf07871b84add484d2199c62a9b862d3c7a8ee. 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/b9bb11b3-bf2b-4466-a268-5d7c4c7789b3.json and https://artists.proofprofile.net/proofs/artist/b9bb11b3-bf2b-4466-a268-5d7c4c7789b3.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 0x30056f16d2bc71c75833a2208eb72a4cd73a56b436f5a94189ef69e820b012fc. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/TRZ351901238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34f3d949b8f3a7cb90e514b4e277e8c325e01b87146610b587fd3be81dd3b02a. 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/TRA162200302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17c69f6cfda99082ee07348975373c77e7eb7354dc23b536a92fcaac37763360. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/TRA162200591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95edded1bc132ccedaed027abe474026fc77912af57fc1641471b9a3d2b726dd. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/FR59R2491072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdec4472a765e27f4799d8dc78733a08c00c66d5fca011ba184045dbc0332e3c7. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/FRX202485362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccb2679f686927cbf3eb7891d1b216037d24214ba265cc99e17f4b0ca0efb1cd. 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/FRX202485363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04deb98cd1a7c1586afd6a516fa838040ef981600d5fdc083bcd432690265a47. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T21:48:36Z), 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/FRX202485365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc932c07334ad6ad8e446f211d581883f93f38673fe73be70c0b628cad83566ac. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/FR10S2436182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95edded1bc132ccedaed027abe474026fc77912af57fc1641471b9a3d2b726dd. Chain 2 (Bitcoin): anchored in block 957884 (2026-07-13T16:55:06Z), 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/FR59R2491072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd77400c0b31ce500cf8512150c1ea1a474edeb58e6b5f94864a4df5c900e6893. 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/DGA052482883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd77400c0b31ce500cf8512150c1ea1a474edeb58e6b5f94864a4df5c900e6893. 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/DGA052482883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1986e83fb8468a7736da43cc992c78fe1550a01fb0688f82ecd98f944355bd9c. 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/FRX762408109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb288de9b04283745da7be93406b19d6d702360590d36e1184ac55fe0fe1a933b. 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/DGA072397916.