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 0xfd68084db376d65ad3406864e399bd837de91280bab770752c4c7fd546f661aa. 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/a65f06fe-b8f5-4f71-b0f7-c6aa162e4f6f.json and https://artists.proofprofile.net/proofs/artist/a65f06fe-b8f5-4f71-b0f7-c6aa162e4f6f.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 0xcd23c81f699892c52e37dc380047dc5d0b42be22f69a098f8e23b0360eb4720a. Chain 2 (Bitcoin): anchored in block 958368 (2026-07-17T05:03:25Z), 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/DGA0P2433728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x656ff6e42b1f18375ed71986ff7fed96b25c855caac7d7c3cae0e7352967aec5. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/DGA0P2469859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57f898af977b1280a26e8a8e5ca3e929ad56d22931ec0c325f8c6781e2b76bb4. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-21T08:49:16Z), 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/DGA0R2454851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42b4554723c4e808ed827279c063b0b8fd2b2e36fb1b2cf0f95bb9f107c20bc3. Chain 2 (Bitcoin): anchored in block 958678 (2026-07-19T05:59:57Z), 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/DGA0H2417864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66bc5842ac73eb2790921a22a9ff20858e9cd080cab84982fd945d9caea11eab. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/DGA0H2417871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ebbc76cc1eeef45e56459b371efe14fa6f34cfa6defede9a5c77f8aa1aca5f9. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/DGA0H2413872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82462196ff923cd21c3a4a968928846355838bfe14349fd6bac3c4a9334b3b71. 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/DGA0H2413868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x259b5f3b4fdc9392ebcfca1c7e53930610be82e3166e8aa72b8d2efb4c942ba0. 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/DGA0H2417872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6564389391750d9f263f1a8d90acc29b76bb21f0c6c4c103d096b24c47bb9f60. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/DGA0H2417865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16a2ad3aa69569c46be4bcbdc844808fb2011cd4447d617caca692cb29122fdd. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:34:00Z), 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/FRX762434886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8b7b23c2df677327ff863dc687950ae970d603812f40dea1043b50909bd6370. 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/FR2X42505015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfefa43fd28b0791fc64e7648a9cdd5e0861713e1eb84c0cb53223cc313d27f12. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/FRX452566191.