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 0x864e69175f23433dc0265e05779cda4e41f7f48a1da5aa753fa07f3679b59ab8. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/81fcbecc-f0ba-441d-93da-e655cd419a65.json and https://artists.proofprofile.net/proofs/artist/81fcbecc-f0ba-441d-93da-e655cd419a65.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 0x18bfac365b1d526d28742cae0e072586ecc75fd13a463ff484f09e5c32685d3c. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/GX3Q92516414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbeb0aff5fc91291d5b9495fcdd4cc6dd7ec5caa369d9ae3ca313bc2b2ca1c3b4. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/GX3Q92516415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c37e0a3288eba039ea069b5d33eb95d5b3bfcd6267484066f79a6f0cc77dcd4. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T01:49:15Z), 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/GX3Q92516416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d2e680c419f0dfe6e9229a1a223e49a1ed7cf5929e132219b54f05621fbefbd. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/GX3Q92516417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67114d5266ba0849b2ab857fec80c902dd3d4af3e19a1947bc510b672f226985. 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/GX3Q92550296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e38ef0d8f3f372cbbc6e01e3c0f5fa62d2a7180b384b87f97c59535ef630e51. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/GX3Q92560290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x430ee95f3fa6e81395272c3fc35172a5efcd42e8ba49f1b62e31a41715b789b1. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:18:06Z), 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/GX3Q92597770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5e0b1eb643fbe2250dcc9d86136422dbc928db2625c50a095fa96b1c7f23f70. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/GBLFP2527042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc83c46c87f0a9300d7a5f389a86abc866ceaff63341ef7d5039f69ef5749fdce. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/GX53U2567639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d386bf9bf672642342ea433defb39d00384841309162d5e13a1d0a57caf255e. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/GX53U2567640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce71a9484b06e65b2f295613809fe559bbdc5ec24ebb351746fa3c527619081f. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/GX53U2567641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd001dbcbcaeaa0a350bfdaf111284f394129d05df34038f77815b528e0fd42af. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/GX53U2650158.