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 0xa3837ae29369e3705c1e62f2de0220611f57f906226555af1e81ec9f1f74f900. 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/3a87cfd5-ba08-4637-904f-e4836dca014f.json and https://artists.proofprofile.net/proofs/artist/3a87cfd5-ba08-4637-904f-e4836dca014f.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 0xe7c93b47c653d9a517d91093d4855bdae2f46f7f92bdf4a2f2b1d4747e3e7160. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QMFD41300047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e0b3315ad56aae705f398c74a48b9735f47c0b704feedc09e27ad9b7ba52dd6. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QMFD41300048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73357e2c5d7acc894ee55227f574d8ebe786908744cf00669ca53161b36db330. 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/QMFD41300049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x709f53268680dee426692385eee47d737abfb13f99e9f7fa2c5183971110acdd. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QMFD41300126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26bf8dd6351e3dafe1aa986b0c6dd6d7651c3a5f83694b020cca6798fd023f97. 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/QMFD41300128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa70625e99c843b11ab8c34a30a0560f61bd7ea8e56ed03cdf68cae1b94989ba9. 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/QMFD41300130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x818775d12b67fb13340ff6ee1be95faa001f7bf0fbecad21ad069c5fbf5039ef. 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/USEZ61500059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6ee582395dc27480a9d8a55e778c2c010f1f6604875c22f130ad72ed8339a30. 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/USEZ61615604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28be3703ba0d23d4b13c15d2bf799a7e3bb5e4abff30b8dc61f8a6af4bf3e193. Chain 2 (Bitcoin): anchored in block 957744 (2026-07-12T19:15:44Z), 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/USEZ61615607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c6af5a30724312e6ff539fea1780a6d17916ed5afe9e9ba6f474ab18d9dc6cc. 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/USEZ61615609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0f8c9a0eac896e00850103d9a52266460244b22709f66b314391d46ebed9238. 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/USEZ61615610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc36b36696a90d5b905cd1eac62749d1c8d5d358039171d44b23b5895516538df. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/USEZ61615611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00ca8f3a2ab97dcd4c7df62ab6210376c2c1ab9e0d9fb1968edc60cd3a616345. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T23:09:57Z), 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/USEZ61615612.