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 0x1556a79baa289f3ee8dfa7ebc5240037436cdd17e1a132f9910491092d149628. 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/2615729a-bbd7-4ac5-8427-081ddfec44fe.json and https://artists.proofprofile.net/proofs/artist/2615729a-bbd7-4ac5-8427-081ddfec44fe.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 0xb5968154ed933398487e2857e566e0a65a9b5bb8a2640fe2f4ee95e92f1de484. 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/TCAIZ2470657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c9f2187194aef501370a2e7e6fe71bcb2e9456ad03f82493a6de18870f91740. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/TCAJA2414664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa587d991b9769e76c4e3e9d07a150783d56dc17d66ba3ebc508cdfbbbe39da58. Chain 2 (Bitcoin): anchored in block 958571 (2026-07-18T15:39:25Z), 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/TCAJA2420780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb465cf97caa71e73f7ecfeff3f8a33a74ad4756254caf35438904ae4204b2755. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T15:47:14Z), 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/TCAJB2441618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae51016ce149747fa4957ce0f9b434c222980f8fee2be7b7afd2e9527abc9c0b. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T15:41:57Z), 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/TCAJA2448455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fc5f6672609701e64b9aadc6ed41062cc8c5d2b276a61be1a31661e32f3c3c5. 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/TCAJA2457014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d6e4d1f02db2be27405088fe6cfedc3fe4aa01845c385b9e9e0065c5e65a324. 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/TCAJA2488910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5d471fffe8fdc165ac8b1bfc289d9cac53bfb7f5740c120f861919e6245f5f3. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T15:52:01Z), 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/TCAJC2494135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3af571ef67d739a2ae1aef98dd921a695e879a4652849c0015974780d51f0c3f. 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/TCAJB2414796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68418f6b5bb85326dc6eae198a9b11377c63e4e0c47efdb5e98d685d8f5ee7dc. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/TCAJB2421308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17a0ff50549be3f0e43c0d88368716d8f2bf4c1e9a655096fed659d895a6ae98. 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/TCAJB2451162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe44dae23c49c0c1f3737b2d8692291dd7c224c825637cbaed14fddb9ad3737a. 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/TCAJB2472755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbce6c0f2aeb2d6a19c853dabb8e5b9bc6b77c8d3775813f09086730acd2d152c. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:40:26Z), 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/TCAJB2498356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x057bffed699c0be48f77df26ac89288f6f3948a5d3b467f9fc0731dd9e30a4f1. 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/TCAJB2498325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb81b9d6c38ff408262d8a65ed65ab6129c2714bf740cf03902dc4c76e22f3bcb. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T15:47:19Z), 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/TCAJB2498345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd41948ac6cc83113a161d1bd9531b09cc945ab6992107c27aa811f75f6e7d658. 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/TCAJD2472821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x173968f5f4d85bf6faac3a6cf453f1506545801fb8640c5170e89c97b51b84c3. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/TCAJC2472813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x009ad585be4d5705d8aabfb1f82eed659a211ac5d98d449af34f8352add61435. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/TCAJE2440582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90e696393239aa678aefdfbc5c3d3cde6ca97fbed12afe6581c04ba80511a8ef. 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/TCAJD2593434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86c800c4465a9dcc6aa9cb7059a48a6a86cb379ab5c535af1f0ba493f02c1111. 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/TCAJD2593359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bfe4f9b77c26e2e12c2edb73f68c9dc2964fa7731b483bbdc56d3527e640c89. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T11:01:44Z), 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/TCAJD2593423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ac3c5ac2a26a7eed313509cc4a9a049168216fd0bc8eae6090e3721234d0a71. 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/TCAJD2593346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf747862f620e854519aee7addada7b134f5ce10c98cf080b884b2db31d8d8ea. 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/TCAJD2593329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f2ccb103e1847cf99721b88b04e21fc529a2ad9f028228bb61f25e991a0400f. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/TCAJE2555458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b743bbfece32fa739b4a9f95e16e991af6c406057b2e68cf19be642523dae20. 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/TCAJE2555452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c20b3a61b42fce5011ef9cd3e6a744844c372b1a38ec83f36b7ec53d1e5fca5. 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/TCAJE2555462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x714f0035fb2216407f87efddb5b9028b8c686da90e135d3f29a4334bc0b4385c. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/TCAJE2555363.