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 0x22e59286f38e37b2694aed893fd1e82d0d03bb39bad7cb18556834d4072a7e53. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a9942d0d-5456-4ea2-a299-59157bb9feff.json and https://artists.proofprofile.net/proofs/artist/a9942d0d-5456-4ea2-a299-59157bb9feff.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 0x9b09072a5ee3a8d89b07671c07d545a3de429fca92c1cbfad16b232ee13628c6. 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/FR2X41940231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69120c9d0f9092e849751e198a769d1770f20196c29f4ec4737db19a50f8dc96. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/FR2X41940232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb72c810161aa16efde363140a77afa3722e4091162335772d3ac69b3d1e42109. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZHZ62263727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f91251328821aacb6fc1775567f7b287bef7d3871392c2b2cef94e46420dfb5. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T10:57:18Z), 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/FR2X41940229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb38ae8c8a5d6f1ab8353eb647232f0991fa193e5e74b6bf554c6f23261a2dec3. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:03:35Z), 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/QZHZ62272963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x946659878d1d97db80d54f23c088c920c30e53407f9fb085912e9991efe98163. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/US7VG2320166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13a751bd62a1a870878fcfc335768d42cf3a6fa1d51a3ca2a60898f97734c681. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZTPX2214816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xead052d56cf46abf9b409f14c5ad66b2bae5314b866779ba03f1d2ccb5004bbd. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/US7VG2320169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbff266da357623c9b3962678d54797bf8bb5aa1ccf44ced70e224368c27ff9ce. 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/US7VG2320170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe95c6a09bd4d2f794af6cbfa65d7c12debf1869e67eac8e530071e950001ee74. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/US7VG2320171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee7feb01336d86cfac5849bff0c74a5318823c1a5589d93413a87044d5d2df6e. 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/DEH742427258.