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 0x46ef6388e99fb98886b4ed5e96626e3e0d09fba09f800dc303c062e43fccac97. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f40ef873-c869-45fb-9bbe-2b320687bc00.json and https://artists.proofprofile.net/proofs/artist/f40ef873-c869-45fb-9bbe-2b320687bc00.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 0x355fac89a0cd3f1e049db5454d3e506175025e77bf2710db6455ef44988ad4c1. 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/TCAEW2093773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa99d4cd40023bf270dd561157f09fb92d7e49cc389b16839b6367203bba84132. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:36:25Z), 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/TCAEW2093797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04a4b9d9ca178d9abf8dfa1b37677eae77a3f89767e2bf90de31caeef6aa0c2a. 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/TCAEW2093951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x788a2a59b0d2fcb10be111bb07488b9813b1f3aaa7adcaad3cb320cd176f2e2a. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:31:53Z), 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/TCAHG2300526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x187e114c349af617a755decc05262e26ca9d7887854ddb3e59ac8f88075e085b. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/TCAHM2318307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5de5621e6306af3a25619f326d6db3c92bdda36349921568b5cc1c4c04bafe52. 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/TCAHM2320302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11a51b4416f503a8dd15f375549f27f6dd9b3b2a340e6758a2a9b426a6eb2d8a. 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/TCAIF2490784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c095e6719ae2d4a7e1cdba9e67ab1102a9195ef246d4a83204b5f2c9994dc4d. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/TCAIO2454990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84034e224ff8042e4629a54d9fb0ea374c50bf3501c2f0e09593bf2810062310. 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/TCAIO2455017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x262e0e0ca0d3717331a6e83adeaca4e832513d61ea92d93f7831fff3f64e40f6. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/TCAIP2455030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x597a7010a8be20d58769cbbca720bd8ca0a72a9898913f934802ea4a3252e09b. 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/TCAIS2446319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9be628db48d21334bd647dce5f510500e43962ac39f465c2a6f480819faeeb55. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:38:02Z), 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/TCAIU2439633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7121135fd59373c152d3a9511e7cfe4bae2ae5d861ef4b44b7a40dca87c1d966. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:30:29Z), 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/TCAIU2439615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07de55dd356c41ce91df9cda1590af961baa9daf90b8a5390780dcc18bf4c516. Chain 2 (Bitcoin): anchored in block 958325 (2026-07-16T23:55:00Z), 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/TCAIT2439626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x497e8d74fa04739a61fca80feddb77d6a172b53b727f66e8859c1bc73e27f9ce. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/TCAJH2563925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd45df036b325b96581229df231ed068ca810099e3b3e531fd6fe75d3a48aee9d. 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/TCAJH2563945.