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 0x912fe008d638e5ccdd44b3ccfae26521ad8508f0b969b67cfb41512022007093. Chain 2 (Bitcoin): anchored in block 953699 (2026-06-14T22:00:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/68f079da-c3a0-4f46-8b60-88845edec250.json and https://artists.proofprofile.net/proofs/artist/68f079da-c3a0-4f46-8b60-88845edec250.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 0x1a681c49675e9c183a3b9ee5dc34412733f4366d8a79ce400223142bbb1b4f2f. Chain 2 (Bitcoin): anchored in block 956482 (2026-07-03T10:33:57Z), 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/GBF089400185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a8132f9e2d4eabbdc133af67f6f26153414be997c2e157bdc4e03b80067908d. 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/GBF089400187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a79fea3be15bab4b02adff3171ed62be96125218c95227a477ce75271719e65. 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/GBF089400189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80b0defb9c4c6e1aa868a48c9e9a99c772d895235145db8dc323f98c5a42825b. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:34:22Z), 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/GBF089601111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4a29240b7daa053a3f9fbd8e739a2d5bb75e461d166cf71ac07a30baf5f9d92. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:15:23Z), 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/GBF089601205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3f58b700b01991b2591d67797eab78360cdc311abdcbe652525684068cadc24. 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/GBF089601206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x042d1fef028cda424fc28c1a8289a0c3cafa3c783f505f86d57c9bd825ecaba3. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GBF089601209.