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 0x0fd12156ca8c973e05230378a0a81bf80a67c1cec995468ee936b1d28eb00566. 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/1f4594cc-716b-4a48-baed-a688c19ccf56.json and https://artists.proofprofile.net/proofs/artist/1f4594cc-716b-4a48-baed-a688c19ccf56.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 0xd405a477606538c4d1e53e513e5fa08f579a1cb10591a332b4473611be0bc472. Chain 2 (Bitcoin): anchored in block 957751 (2026-07-12T20:41:42Z), 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/QZNJY2448252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7727f7351e4526b9224636fd9f5c6a842f38cd8572f554cd0483892dbeae453. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/QZNJY2448254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf313fab87f017b19fddb9f00cc0676c141b1a2f41d57c545802a5ae8ca215e54. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QZNJY2448255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17a2c1e6aad686735fbf1c9212ad6604d3dc5dabb97c6950073705dffd57edf5. 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/ESA112563741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ef32c612a1b8643fa0337101e279a1313a33d35eb3e0c32d5e64ea0078b687f. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/ESA112563745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa28679df900fd4907fbe41438769fb7ab48282f8a0535121cea3e6a0beb6ddf1. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:48:20Z), 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/ESA112563746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40c301db7f5316a2b8fb1ce67205a455597d3d9496bcd522784cfbc75664e7a5. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T19:55:48Z), 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/ESA112567456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d396dd8332f9dfa486201d30f94942d8d996a3996cb7fb919e7a05136e2604d. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/ESA112567457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4caa7ff7f0dd79d5ccb735e0a0c712a81d33dab5e28d8b802fdb290fe530c027. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/ESA112567458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0e4166b800c4674d7ea7983448f4532a29b2abe5ef3b4f19be9225a0c95fee2. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/ESA112567459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd06bbdd131bbff32ecbee5a43d9a553e708247186b6975b5ccbb80d521a1211f. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/ESA112567460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb481699e867e0fb408e400ec11d4a050f133dc09fc17ef353ebe7bb282447ba4. 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/ESA112567461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30773c1f0aeb93a605e127f2dd930e978b5d7e77516857941b94f4992ed24872. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/ESA112570418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89694dc31e5cf51444ebc6edfc2d20439170d4ebec243d6eec9d3b8b17fd238c. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T05:07:49Z), 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/ESA112570419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa748a88c60cbe00f960bd8686a295458ab4d091f11caffb8d1531c51f22f4a72. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/ESA112570420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcffe07e4a9bd30721ca2b7acadac4fbdb83b6f32e16bfb9d7e89465ecf786e90. 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/ESA112570421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c7146f660662a1cf3c6fd83c06395ac8b324f26fb982ff76abfa5f06a891754. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/ESA112570422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3b3dc7f4acef1f1902f588aafe2e6a7c1722f9d5bdc66d4d367b5c8a0a57b1d. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/ESA112570423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79c56ac6efe287e17610489bb75a3a02529d0d35c16d6d55b7c1cddbf375c208. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/ESA112575601.