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 0xa79e8acdd370eb168a3da5e8f1e2d508059892ed5893e6aac7aeb9488d655722. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/87cec071-13a3-4be5-acb8-98f19800bb3c.json and https://artists.proofprofile.net/proofs/artist/87cec071-13a3-4be5-acb8-98f19800bb3c.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 0x3738578e7d8f0fba6f1e497affc86c0afa12a92e94cc13f31fed288f05c44add. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/DEZN82530385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c1a41a0ac53275e9e2468a1f1675c192284f7d27bbbb6fdc3dae8a284c77604. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/DEZN82530528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x435b9772a6782c3fb47c0ec0a4b5f4e1d5f314086de96c95beb444b5d30c4b12. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:39:54Z), 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/DEZN82530270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf574277dd70287db8bb675f5ed4f7510354621e48b09ec10a75b73767c26f2d1. 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/DEZN82530361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf251b9a94ed183fb67792957d4a3bb573aa74c01f1e7f032fe6f83f78509f9df. Chain 2 (Bitcoin): anchored in block 958656 (2026-07-19T04:04:08Z), 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/DEZN82530149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7f76978acbd9098c75ef42935e08007f5b2493871e0ac155c5cc8adfed4ed31. 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/DEZN82530109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92b168939467e5c7627b5b395125e1f541922310f9cf136ac0c6d1aea4b88128. 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/DEZN82530402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bd8e5568aa5b4852667c3e625a9b185247c764c57a41f7c7cf8a99ae0fa6a1e. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/DEZN82530377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb10c238c031e6cdf30ca7af7370103936ee4775ba26cf489caebf54dba472176. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:52:49Z), 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/DEZN82530206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf06da0a2640d29ac7f595954abde89bdddd5f1e1f9ff2285bf3c4126b6134733. 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/DEZN82530294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x484b5e96d64f9da8e1b566b9dd1083a353e31cef10bb7a1e4dad4bf1573cb416. 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/DEZN82530466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9978076e7adda79972579a00167b2c93100a3e10d96ab9bb1bdb4d66d2ae187. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/DEZN82530509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22d472f693eac821489b72385ba6cd7e90feea1cc38fd144b3f28aaf96e42463. 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/DEZN82530118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5836459c62d72d76578ba45d24de2c58cad8c0451d808abf283c28cc47e074ec. 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/DEZN82530422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa91a90f7c13e03bac5ef251bf00278265c5915c1b0604c94ff6de2696ed5ea69. 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/DEZN82530182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22823f4195cfc057f3dd07fef0d40af1450649fc7eac8443c46acc6bc8c3d851. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/DEZN82530307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd677e65d67ea6f78ff3545474df44fa2e07dac0d516e18786cd1736edae87ad2. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/DEZN82530119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dd5d01648e305f02adcbbf0580f01fd941b5edc74b1690ac4103fa98db5ba5b. 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/DEZN82530505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ab1767fd694ee41fb04678afce0bab56d1cd2bbd5c4aa59c836d2689873d1dc. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T15:17:20Z), 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/DEZN82530447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd29f971a865c4d044f809a1543ed6f7acd095655b4e6008afac1352ef102a93. 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/DEZN82530155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x304694f7202f2a060a466a5799a365cac081d391ea9f245ab2a9fdd54416fe7e. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/DEZN82530302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x218bde59688e199de1017f0b8e2052ac87df451101239f2426a33e221bfe036a. Chain 2 (Bitcoin): anchored in block 958834 (2026-07-20T05:55:47Z), 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/DEZN82530123.