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 0xc8e41bf3f16dc7f466e9573ff29354a263509987d126b3e17309eb96f0f9da6f. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/85e5b7c6-b437-4a3f-a566-fb8e30e110a3.json and https://artists.proofprofile.net/proofs/artist/85e5b7c6-b437-4a3f-a566-fb8e30e110a3.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 0x444214b0394824d08668a0c617f4b138e6a54f1c931b4f930f4ded50878806ba. 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/CH7812417613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f7442c802da89e60879f858a675166cb8c4057ae8f6fb040eaca4b9e5592cb5. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/TCAIS2493447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4019d0184d044a14f3713b58309b9775f7c85da9c8e5c59892daec99afcd138e. 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/TCAIR2493464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57680eacb9b7a04c9aeb3f9d35abbd28bd28d0a2a37fce38bd59f1325b1e8845. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/TCAHC2388200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x577475d602782bcca77f59a2200f94151480b532f7bd4fc1a9d4ee8314caaf71. 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/TCAIS2493498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dae1eb1eeb844f9e39c0d750e606420abcf0af0560595c0d1a2726cfa42fa4e. 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/TCAIS2493508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14de394a55d18e3c34da8b491006637714a47f3082220f1c764ebb27d3caae5e. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/TCAIP2435157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10a7cca5d1bf691efde37526ed8aa270d5a76e71ce4d59690291e8d47707eafe. 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/TCAIS2493583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7de214a481317690b290fbdafb67fd8b0f91a2fc67388d928a92d012930a9ef0. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/TCAID2433286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d19f5619e0db01957e3b9edc5cc5315db3e8cb452dd4f3fe28e26979d495906. 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/TCAIS2493612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4e2c85a74a7153333c251ce6a80554dbe0ad0330e0c02c671cdf98a642054ae. 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/TCAIS2493623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04c717ac84ea161f461e316207cc9244385c5c99294adba056824e23d6344201. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/TCAIS2493724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe410c9a43ea053e1f10ef597f792d3ff88933ba36ac9886c6d9aa1c91b0aad56. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/TCAHA2382597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7602be59dc669ae4ae70783f2b85d1623733854c557c6fbb94b8c8192bfa74f. 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/TCAIS2493767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f20476999ca6c1650602dbb55344da2922c53f8fa99ebeb5572edce1c1a187b. 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/TCAIS2493775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b299e118f16e3dd6f92aeead89272f9e19f35557155f9f5f3c645b220586d3b. 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/TCAIR2493780.