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 0xa81c249409cce255ab4ba0ff2b792bd39facf6a803018a787b7c06e21c8d8ff3. 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/26ef7b44-c8ca-47e3-b231-29d52af67e1b.json and https://artists.proofprofile.net/proofs/artist/26ef7b44-c8ca-47e3-b231-29d52af67e1b.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 0x5c5b388d732558e9bf6bb02763dc803bd60479f608c1074abddd65ceac4cf57d. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/UKXN22526783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0cd42755ea32804379144bdd05a75273726e6e4888c97b78a86a12c2406a986. Chain 2 (Bitcoin): anchored in block 958218 (2026-07-16T00:33:33Z), 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/UKXN22526784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x006cd97b72dbd7fc98fd46b6648263d3e6a61fef4f6ff53cc29e6562898f29a9. 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/UKXN22526785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc445f2845f3a9af700073a81d63dedd78a0d524d6857af276dd50873c4f0b23. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/UKXN22526789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06b11c6069977abdf4013f4d98b3075e4c46a198e04429d2f222a0e91bfbffee. 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/UKXN22526790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x475ebb93681b6ea3e5a0009c2decf32a7a0b81984f4d4ed0e6ed734fc4970809. 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/UKXN22526791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ce3b1027a803dec61062087b048c4e7e3fbf6d869f97990bd8ed4927731f500. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/UKXN22526792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6f4a3e9e668f70a3a39753c663365cee2ca5e6dd0f20586a17fb9a848d8718e. Chain 2 (Bitcoin): anchored in block 958498 (2026-07-18T04:54:58Z), 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/UKXN22526795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4c7760310e9e0b8fb795bea4c9518424f438fc527119c58023efc266fcf4ef5. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/UKXN22526796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fbfd7a115e413664b0dfee07c646bdcd212594c70c167e5f6f0a8e150a1daca. 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/UKXN22526797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0fa68444097c756c1e7a8408089eeac313a578a0aa72eb7d7f353c33d0f4145. Chain 2 (Bitcoin): anchored in block 956430 (2026-07-03T02:22:42Z), 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/UKXN22526798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14b2f4f4f2e83f1989765ff00ccf3c0561a3a33653fd9218477646420aff0c8b. 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/GXHAF2520639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa735857e69c3d8131a490048b436d323a7f5f3373ddbebe768765a0da8dbca53. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T00:52:19Z), 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/GXHAF2520641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0aff6e58c397dc4d85a3c61682f8375f3203114fc4cfae1eb34b915edaa6c385. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T15:49:00Z), 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/GXHAF2520645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x429c678d3c4f19a8880a5e9d366bd8a3ee220ec98c1d874b72dfc7cdadc6ed47. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/GXHAF2520646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7315efd925fa8338de2140c787647c51376d570d8c54120eeff59ee82d394f1a. Chain 2 (Bitcoin): anchored in block 958817 (2026-07-20T06:42:41Z), 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/GXHAF2520647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85a5bd151baa140898f1aea5c6e7229ea8e9c197cd2044a56fa5373aa882e2bf. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/GXHAF2520648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc518081fb41e73c3cea5602c5ef2bfb4e7d6b0c1e399245c435737680f83b66. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:05:34Z), 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/GXHAF2520649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58f0073cd9101293dbbc41a4c87d8d1c45a0d44b9b44378f861ce3124da612cf. 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/GXHAF2520650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ef7f55ad0e69e5fa249b00e4a3657da42deb242f2a36b3efb98e628cc0e7307. Chain 2 (Bitcoin): anchored in block 958865 (2026-07-20T12:59:33Z), 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/GXHAF2520652.