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 0xf5bf32f4fbf6d4da473547ba5aabb22c5b52d6e06dc9c46b8233ec5c1d22040c. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9d233ad7-0120-4645-864f-f128d2e68825.json and https://artists.proofprofile.net/proofs/artist/9d233ad7-0120-4645-864f-f128d2e68825.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 0x9d62e700ee83a3fe47cf0d35d5671eb55577ebc340fd4bf746af2eec7fc45b93. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/UKXN22493815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x893814cfd7ab0f7943ba55ed18d2412cc40e8a1ce9241f18fd281d1ff589ad30. 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/UKXN22493816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e1933ab702b9595ea7433447d728966257c17073d37b06d93e5953deb83c713. 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/UKXN22493817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6c4f54413f3d918041f9a092358012a52bca80001005bc2661866268c11d67d. 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/UKXN22493818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf84a791fa10c218cf79c276ad05e6901ed614dcb1c976a6fbb5ebe37fa1b415c. 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/UKXN22493819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3243d1c8d7f8014ca29d782a6faf0f914885e82f15992afb4d6a4ad9c745343d. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/UKXN22493820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52ebaa2a847caa72850879556e77ea5d1c8384020a0682dad75f2d3604c348e9. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T10:41:30Z), 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/UKXN22493821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x405cff15bc72821195c650d9baa862d4a8e93d9f247540ee70375b912c7d119f. 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/UKXN22493822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51e94f2ec64bef75ac5b99ffea2746d59df5bb5da42d0dd666093fe6250710d3. 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/UKXN22493823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98334f7dee16573a8f8ab4ef99ca6ffffbf6c66e928ce66538d5a504966e6963. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/UKXN22493824.