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 0x01793c2965413ff58243912fa8c2552f30d1953d218f2cfbc6b0d9437bbc7bb2. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/45f5caf4-d91d-4018-be1c-cf692926bc63.json and https://artists.proofprofile.net/proofs/artist/45f5caf4-d91d-4018-be1c-cf692926bc63.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 0x061a24ee2d687dd5031692df0c5faae7df559f642decd14691a40705f446b3fa. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/PLP181600006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c4d55d5f50b6c02bb767dcdd81526c61e5849186f7b546437a32e72410ee5e4. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T04:17:46Z), 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/PLP181600008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x872e25dd5e233674fb97c531168273e78b92900aaea6f21d1d530c986113c855. 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/PLUM72200814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x524c1a3ddac80f2841b4d7770974b2eee6860bbf5a071da80ee5fc65e165bdfd. 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/PLI360857920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96759be2c3fd882e88c3867884a23ac5d0b925c7e50f5d2adede0a4b0a704835. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/PLUM72000015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38e4cdf7eb3973bb5f29408440a80b702218e46a7da4a3b81f191dfed5c6970c. 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/PLUM72000050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a39fa12af0f6bd18ba9a7ab818cca19d3c26f265ce746e0232c411b3ce508d7. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/PLUM71900629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cdbde091713316a83753b6800731bf200e88dab044cd6862e30e4480094f6d0. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/PLUM72000052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa20b25db1f96a8ca27479a89a37e932c31321341ff50cb303e4af52f6da8fca3. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T15:07:00Z), 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/PLUM72000053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6259f035817ff6b2212307469744b76057be63212eeb29738be06807dfdb16a4. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/PLUM72000054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d5c247c09e06f95e27a4751ca46185170ae325510fdf31598a833631a789929. 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/PLUM72100440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbca593d634b7491dddfd08537d6767f86e2dbe826a9e82dab51ce59aad17cc8e. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/PLUM72300011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9c50f6b754c931896b27161769fcd4dc07858162ea77af150c3b247dcab0668. 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/PLUM72300058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x140e72ae732d13b5a0c867359fc870b367ea7ebbdfc74c74c79e0587b3dc6727. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/PLUM72300247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd05b00945ebfbdff5a5ad540f495d4da3bcc1c4c664d171e85c1b38395ccf771. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/PLUM72300248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x928670325fdf6211ad666b5210cad53f5eb2559a6816a7898fcd3b2b8f8c6138. Chain 2 (Bitcoin): anchored in block 956713 (2026-07-04T23:03:25Z), 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/PLUM72300203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ecd292f78e1801fd6a19369421d86229d981a25bf76a3d7e41bbb8fc3e52a13. 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/PLUM72300150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d75c6c0d12bf626ad85e141c2562a5667ab2907d277d1ed8185680fc858af52. 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/PLUM72300254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f4773d3969aa8f56d14b7d159ba48cbdc69d497b5d7b1b8f72eb36e69f99aee. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/PLUM72400142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd52195eaad767706b55d5fa4bb2f02743868c0e85b1372790080c17da41b3ad6. 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/PLUM72400094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fdf17575742144fdfb478dc128dc198eef61f0ef75644fee7240063ff343bfa. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/PLUM72200474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d62d7f2b361b3744f9dbd28c0d6055fbd52cb58496647a0d4eef583c238f01f. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/TRUM72100105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d62d7f2b361b3744f9dbd28c0d6055fbd52cb58496647a0d4eef583c238f01f. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/TRUM72100105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25f93579a78ce5a844586690f2ea241b51981d348e5bd136af21c240aa70d28d. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/PLI292200670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70a8da69230b7ab8759e50e35b92046732f7c1c74ba357e43bced9285ae97497. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/PLUM72200128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x430f44add6d90f37221c8a862a3490c589414f454fe9d1ab7de435fc34a06592. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/PLUM72300206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90b2c4aca7d2088306b4170061116da0593e4579b57b41c790b2cf92d63e45b0. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/PLUM72100643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec632ec69b45b7de96dcfe4c286a0dbe0100fba505c7c30df0692a657ca72a91. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/PLD111700026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdced0b2e2add49277d9440249b78738cd091afd6f12a6b4ebbdc4fd0c8067197. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/PLD111800036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc55b1aedba216587f89b4ed297cb4b32773bc1ee4db5cba3f9cddb18fae9dbd3. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/PLUM72400375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdd8040649d0524dcf4fc9eca668b2e8f8951c5ea0533273d2294979f2320617. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/PLUM72400332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72f5d42e00906afac9cb93e5e67ac7a9776067d9dd1c60a92e185be07ee40e50. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/PLA812300018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1734b8f279f844a142877ba1e3e784733ec37a68d9d08c752abaa8bf493b5e4b. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/PLD112100007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd0a442dc7d653f081560137a64cab1b6e7385be3faa6b1b0ed909a9f6c820fe. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/PLD111900001.