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 0x41f830f18a29ca204a0576631db0c67ef73ce6a78c0f8ba788c2483adcfc5de5. Chain 2 (Bitcoin): anchored in block 953713 (2026-06-15T00:33:41Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/81119655-de7c-4140-8aa2-10d291f31ddf.json and https://artists.proofprofile.net/proofs/artist/81119655-de7c-4140-8aa2-10d291f31ddf.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 0x8e3c364e27270b29441aaaf2650e8d6e714d3f2da4f8ae24d58e731a212848e9. 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/BEQ570800005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8738dada8db58f180d2dfaf86e5b3d7b7b84d285411c1faf38a22c5428b99a9. 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/BEQ571300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5679a1980ef7a4212c32471f93926b44ca0fe8fc886f6ca6d6c85b9dbf37e44b. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/BEQ572300011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1421625de271a38369ff84c467c32e6c4bcbf549bd6a7e5eb4ba86006901ee2. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/BEQ572300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61ce97db3fc0ce554ab856b7285ba63391ae65c142ba374ed31c585ceacb4624. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/BEQ572300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02deccd49dd074251ca4148984515f1fda6ce31bd9daf55f24714cbffd3cc02c. 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/BEQ572300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x183c2d05ea54497f423a1030b0ca245c72cf306aee9f1644eb20b87f0a8176d5. 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/BEQ572300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x229d9b76b5b7dc10436b3ad33f7239310c54de94b69bd7bce58c1fc4105b5dd8. Chain 2 (Bitcoin): anchored in block 958724 (2026-07-19T11:19:01Z), 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/BEQ572300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8949e01e8116c782e171e944c5de42f6445fe6dddd8ed83cfda7961cc05192c3. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/BEQ572300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x995cf8f623b311c06a1f7c63f2d9bd8b50622343983751427a2ad589fd525f1c. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/BEQ572300008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e9f3b154784d1048efdf815d984e18d8408b5e8345cbf283fbc5fc2161f1803. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/BEQ572300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x950b7fa430a77257041a68ad3dd6009c2cb676afa664076ddd4ab203e5235e5e. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/BEQ572300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad2f2f7aa4737436721f1bd7902b484390a73526bb55477fea9dbb86d079776f. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:39:23Z), 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/BEQ572300010.