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 0x95ed48967dd8a3db71066be71f9771763522506824e1ef3056f2da20d701d8f7. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c09e8c97-fa70-42da-b390-bbc6125a8dd8.json and https://artists.proofprofile.net/proofs/artist/c09e8c97-fa70-42da-b390-bbc6125a8dd8.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 0x9930d3f00f40791d74b2885cbb56750078973f44c6b6115b9edcb1a5ae43046b. Chain 2 (Bitcoin): anchored in block 956425 (2026-07-17T08:44:25Z), 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/USA6G1352503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf048cafe37c6db4910af8b4d56f7b75a301e42f8fd3fc17efbe41eed1a6668fa. Chain 2 (Bitcoin): anchored in block 958776 (2026-07-19T20:11:59Z), 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/USA6G1352508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x799fd4bc22ff0dcd68491b361916a38a36137e4ee938d6774536c909439f552f. 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/USA6G1455003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7527db294b75d6896e748406902c0456888e4b53e8a7f30a063abbde066be028. 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/USA6G1455004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc17e7e3196020a5068469fb7e8c503d5b9b497308c4cfc1b6293a1446a47c1a4. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/USA6G1455005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb53c3d43e92ba3c471c4f74e303e76060d0a2af5c5762fec90d48f2e88d78229. 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/USA6G1455006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaccba6fa62de109ea258956ef0cdf4a64cdc5c75c82ab1ee770feedece9f4b22. 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/USA6G1455008.
Alright Boys, When We Get to the Airport, There Will Be Absolutely No Place to Land.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d800ad5b1026e02b864d16b2f534620f7e0661add14f3494ce1d79487807796. 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/QMZPB1800333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9c2571e0e9b854a64e3f0b516ac0f315d3ca3adae2b619ce2cb509d02ed684e. 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/QMZPB1800334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fd9844f311d7cd052bc574f464ade8d0ef6134becdadc781e8242b51f1ccd7b. Chain 2 (Bitcoin): anchored in block 959088 (2026-07-22T04:40:50Z), 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/QMZPB1800335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedce06a647d2223cec3f1ffd79aa8492ff379ee228eb7bb72e0c45c058369b14. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/QMZPB1800337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c9bd408dc716e9d2112d838c89a08c29f9d9777b7a97cd9fde5d86ad6168968. Chain 2 (Bitcoin): anchored in block 957728 (2026-07-12T16:20:40Z), 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/TCAHW2422880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1e597ba242225f579e0f0ff70eaafdf2baf34617e044e2059f45f1806eacc3e. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/TCAHW2422883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3aa7876c1597ce039c53ef059bf43a460e4b7cc1321ac0e04748f1e226208cb. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/TCAHW2422886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd386e216aa31fada72a59432448a54372be352f0b0be9284e4a04e10ac24aa2a. 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/TCAHW2422892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdce00e90f5694a1d4197e51365b5ba5a488818dbd96941988612273389af7f44. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:11:05Z), 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/TCAHW2422898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68a946c631b8c4df89c20305884c35051937443bf216de8da896a540f4b271eb. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/TCAHW2422924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5adccf30e10221cf7f4ae9ef69224ad483b47b389a2f109535acbec1de9e2834. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/TCAHW2422929.