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 0xbedcf20f592434baf047402396a857035b90c1fe5a26a172ecacd975eb111458. 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/4fa7a1e0-999d-4edd-a2f8-964af1aa4646.json and https://artists.proofprofile.net/proofs/artist/4fa7a1e0-999d-4edd-a2f8-964af1aa4646.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 0xafbbf788627437ec8af4e4eb043e368413805cfd33fc72c91f733125d1994a90. 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/DESD82000355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6dca40734163c8271baae02a1d28e7888caee850603959d085b47ec8371db25. 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/DESD82000362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee882ecf8a47ef7232ea472c3884aeabb1782c57c8d7db4be67c753ec46402b9. 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/DESD82100375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ac77ce24bd0fe8fcea2685a7ee3deccfdc2ae4ed44a154b0bda017c50579850. 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/DESD82100381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x509d1ca4053a0ed3152166346ad90a92e7e7d77bf54fe3e6c040b2b1e4a4d775. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/DE1AO2210068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe83745446c5504d941a4a03acb146df654e6b3731d2a85caf7738d669c751322. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T02:02:14Z), 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/DE1AO2210082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92e4653663f4d76185ac39129414114337035fb75e9fc2182a6695bc4da6f302. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/DE1AO2210108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff96a778a8ff7f38359f728d8af5147f543a310a4711eb87e3f33830517c790e. Chain 2 (Bitcoin): anchored in block 958495 (2026-07-18T04:39:02Z), 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/DE1AO2210112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x879ef9684c0288b2de57c4cb34d3b58fc879bb3a976ea50bab647e55e8bc7dee. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T02:31:22Z), 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/DE1AO2210113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x120e6cef599648a0bb80f237ddd8010a1b84b93a47b666a8b0830c87e089b543. 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/DE1AO2210117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xece1bd506899be8d5e14f1edee80d974fdb8527bca54fcd3b825d108a3a7be2c. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/DE1AO2210110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5c166e1a8250dd18cf6af149232f97f95a8dc949f60fae73614e279a361849a. 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/DE1AO2210107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf7ebf5953c6efe88eaa9622efaf11b3aa373dbd4d1299f2dbef6c73fc8a98ff. Chain 2 (Bitcoin): anchored in block 958051 (2026-07-14T19:14:42Z), 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/DE1AO2210115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x120e6cef599648a0bb80f237ddd8010a1b84b93a47b666a8b0830c87e089b543. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/DE1AO2210117.
Driving Home For Christmas (Mar Malade Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d914b829e3c0bc84e587da7093568cbf09fd141dd030629d85b737fa052e109. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/DE1AO2310242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ae31f8ea5255c3e9a58801af76f23b9576bb67d91d4b173194abfabf97fbbb2. 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/DE1AO2410282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5c3cd24e03303666f5bfb5306b4be362d4bcba71f059cb5a3bd6bb143d8de19. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T11:27:52Z), 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/DE1AO2410365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ae31f8ea5255c3e9a58801af76f23b9576bb67d91d4b173194abfabf97fbbb2. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/DE1AO2410282.