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 0x3a5712a5b5e2e9152c75ee283684d9618e4e9aafdbcb69d84491a7c0c157dc3f. 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/8873be1e-1a02-4e61-a82d-74d72af392b0.json and https://artists.proofprofile.net/proofs/artist/8873be1e-1a02-4e61-a82d-74d72af392b0.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 0x8f143f19ec7dc5a5d217ebab017d8a162cbdac68d4f0d4d9e652544671846307. 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/INM432000043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd8b37b7f4bcb63b6b427bba3cf6c9f4c8111cddd3fefbafecb1083fca38059f. 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/INM432000874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef1a0e007ceb6a44d28748a7f4765f4c35b17d489e9f68327b5598240136494e. 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/USCGJ2191483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb376cd956befb45684d8427cf16c59025e37f4eb77d993849c6919fac50e5dad. 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/TCAFR2166633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12512c6b3bffe32b41eb02e5097a3d668b5d28cb4d2d639d95e7b623f2954a3c. 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/TCAFQ2121867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8c9b5b0caf4c29a8b6957500174882680a28a5726ccfd4951ec3255c4a56aa8. 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/USHM22133120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bea6a68180743e27311402e8fbe2db518c227886ff72b4aa6d676b39d8efaab. 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/TCAFQ2154918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc819585541ae6ab39ecbd4fb7a57057b4aa936f3af4bcd216bd2f787b11d3310. 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/USDY42135117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a4f572b596a5a8172262e21761d58288ba2f249a2cf7fbb214a78fc60b3787b. 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/TCAFP2136626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51879b5c41ae3b0b22cff53fa150ee9447dbbfb04db780ebc3e01ac780e25126. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/TCAFP2136686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf29e0d8b91634107b0369dfd348dacc84f00ff1b33f040fe0e71aeec1b4f5f35. 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/TCAFR2166657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfe52b190bed684f114cbf8997916834a9b29960c8389166e0e5e91e48b8c82a. 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/INM432100197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7583b0f68b992bb87079024a14b65e7832a043462df62a08f87c6b991e4d695. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/FRS182160412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfd1f8bd502d7c0246e342e882961447fda61e8822c624a58a485de0299fbbe4. 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/INM432200045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd29b4e4d0090d0fb2edd744de0c4c71eafdf9af9d867a1d2b8e090890af5f7fa. Chain 2 (Bitcoin): anchored in block 958817 (2026-07-20T06:41:51Z), 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/INM432200157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x523e544ceb37e61ed80effe15c83b83e0eba7e15344650a403bcbbc8b75e5af3. 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/AUMEV2308964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb731e3ad0e6b4f7aa6b3162a38fcbf47ca6c69de9b91fc466a7e8a2ba18df38. Chain 2 (Bitcoin): anchored in block 958126 (2026-07-15T11:09:59Z), 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/QZTBD2376758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55ce029f5b012edac621ec0462673a78e07063243686040816d18dd1fa15fd77. 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/FRX872400739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c45234a227be30f315daaa3a883f296c0c61db0b5b99431d69949180ea0dd01. 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/US38Y2434157.