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 0x806ca8dced4c9af47fab151755bf2933cc63f706e37b70e8724394505d4ce2a3. 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/6b1ca744-b94f-4fb6-8f99-d6c4493d0497.json and https://artists.proofprofile.net/proofs/artist/6b1ca744-b94f-4fb6-8f99-d6c4493d0497.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 0x4fcb399088f8381944846781fee556f6b7d6532333adef3af67cb0536e463e52. 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/SE5Q51821651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf77b4ed1e9e4a3f48650a651a7b53be0867d9fe62f0797e31297e5b51d9c0597. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/SE5Q52002954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7adc8b2b0c26eb6b134a3e4b13f6f87d3908299b1f1b130c024116285094a857. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/SE5Q52004106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbedb936ec3ab370a6c9f5a117a2322445d56399437eee30450917433e22f9189. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T11:06:28Z), 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/SE5Q52102878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbffe15220fbf763bcaf7326b51aea44089442e1b3a4ac1ea0c698172703b6d19. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/SE5Q52200225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x259241ede8d95105b73b5b5bb2a3126ecbc061136079501ffa935d579d810f5f. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/SE5Q52201073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaee68fa910ebe0965977d3772bb7eab934b0018621d33615848cb1e7f8d0f0a. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/SE5Q52201047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ab42efcce3836cb8077be66fcca2efdbf088d8b6514950c7b987a0b5209f940. 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/SE5Q52301191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd26d7da813e48468ce7c9061b98199724a402a97602ae8aaaa27e0a9b83361b2. Chain 2 (Bitcoin): anchored in block 957751 (2026-07-12T20:41:42Z), 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/SE5Q52301829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0c0d165838049b51d06d42ce588c2e4cea52147d7f0204369673022eb02a050. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/SE5Q52303397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5691bdd17c16ffdec2d3626a42db135ccdb566345742e9eb6cc38257c15c513f. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/SE5Q52401909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf95cd8301d8dd4e7ccd6eea2901e4181b87924a631545f06b7945f6c400ac8b7. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/SE5Q52401908.