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 0x0a8c7afb5249d32a4740e5d531ef266b6503cb8d194501126acea592fa018bce. 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/7024c082-7086-4e93-8487-e02d30ae5456.json and https://artists.proofprofile.net/proofs/artist/7024c082-7086-4e93-8487-e02d30ae5456.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 0x1fed33dbdb9b7a649f34d16462918fd265ac114d49c7142b3acd95bdf9f27424. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/FR96X2121076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ae86b98597b47e5cfaad54a533cc4b1e8fbb1b3e25d3fa860e421b811134530. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/FRX762135685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c77d908be6a352eda39e41cb5b17608320c64bc3ca990d9bca525e2ae8a75c3. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/FRX872270187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaefb2e805a6992f2e1f710672d6825c7986d4b58cf5ba39cef8d4cb402642ac0. Chain 2 (Bitcoin): anchored in block 958432 (2026-07-17T15:43:17Z), 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/FRX872270189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42855047a1302d18a65fdb246f162dcc068ae0ebf266f106e9d5693c824e1154. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T15:21:29Z), 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/FRX872270191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c3a033aa1f6a75e0911aec4f437ca04f5df41015e65b2c8455c0c3391233b60. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/FRX872270192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3aefea66f18af07da23337f2f160613c5a265739b972fa7c704889217a8c7c4d. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/FRX872270193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac8847593a776541458fc342e9bdbb738d7e5e79e0e7133b5d74c512cfafda21. 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/FRX872270194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8239e2b560a5c104db6205722b2f7d8b77a9a0a979f17acca9c189c1c6323df4. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/FR9Z62300288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdfc0d0270e609108cfcca105db5a0643a0b69b641fba4ba32c385d7a7987315. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/FR9Z62400934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ba8c18482423fb6b1137ca38a02497fd5306a4ece18423ed65713b26c85f643. 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/FR9Z62500243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70ead5d3360dbb041c31e93247588d6d532a5146f57f75955bfd86863f932128. 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/FR9Z62500637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5578d72fd7024a87bf89f8d52f784262c1ea1fd1d6750d131a0c8a97537513d6. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FR59R2265786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e70e5482ae2ba55fd82b59d4c9fb5e652789f2168e4bdaa957927fe23397f31. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZAKB1910646.