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 0xe348aa87e893a65d06c5ca032f46601ea4fcb5f9f708aa7b15f8302075497e89. 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/f9bc9141-e806-4e6a-b4a3-b437d25a1e9a.json and https://artists.proofprofile.net/proofs/artist/f9bc9141-e806-4e6a-b4a3-b437d25a1e9a.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 0xfbef604c8efca5d3a75fbc1c589ba1f0036cc4017fe8061e7af2853c809d087e. 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/DKADG2300437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47340897acea37bf6f3500f9029d18d42e94dc5f75a3a43dbad502f187af09dd. 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/DKADG2400374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x875468cb6c4d689e287a9515446df62f58e8ef33b4de70bb5362b3e1f2ae172f. 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/DKADG2400270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d7942e6586450d174dc8e3f55ae62e3bcfd988cfc6a531196f1f5c59af220e5. 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/DKADG2400351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80999e2b5234f69e97ae79c1d743af3b652343a29283b13cb464e7f10eb1a315. 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/DKADG2400376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bb43b809bb17b8871936b143082e80b5708cf6ffcdb63d20483af1076fbd339. 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/DKADG2400377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd025212d0610b5dfe5963a05f93b628db14014850897ab4198b51da008f74276. 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/DKADG2400378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65ab94ef9202b8e324a79449194823b6cfb5ed3a127c627d6d96d6787f0475fc. 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/DKADG2400379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1c68db49328976ac9d867e490ca1f62aace5ec567fa8f953d63b0a4bd32de3e. 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/DKADG2400380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41bbc40ab54a7ec9d5575403939c71886ffd2cadd6fba4eaa4f47a4e92545d66. 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/DKADG2400381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x035529dd316fdb1592c6f92710b1509f8adf7a26e2caa41f2ddee52c37182e6b. 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/DKADG2400382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8405e0b78992c3892830544835466b07b7cbf06b0f6c9199b4bef3e8fadc5a0. 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/DKADG2400383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf48eb532b87b3e50d8b518741ab63b79a95fb5464d5ba8a34905a8e899778e88. 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/DKADG2500123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d31ed4a6fda6ecf6e4af53356f8ab78b8af533ca30f1e5d652bcdc2c97dd1fa. 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/DKADG2400588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11ead3d713b005a19f867f84e63e15eb0c2e527a36d1d2dfde410963375b6a81. 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/DKADG2400478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca02e969b729f30162a8891fb65615a0babc9f237f96ca579a504aa34f094ae7. 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/DKADG2400059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28561849e2d7fb64662d6a036a6e583ea871efb4183fc10e6c1acd1d3ca06963. 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/DKADG2300599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2922277f207f82f8dfc70eb313a17333df71be22c0feaa3985655016e9438223. 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/DKADG2300370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03ddebb30fb682cca26f6098b4fede717a33bdc7fd08b1c7be1709bdea32dd5b. 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/DKADG2300300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bfc0f065f5ce2001354d44ab7e8d378fb926bb4178e909baf8896eefca02d19. 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/DKADG2300049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a5c6ec95376a8c69256482cb7ecb21d2c8b5926fd876b17bc18284011c3122b. 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/DKADG2201099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77953623bf34b99df45ecdcb9a8704504140ab5de4a0bc9791c6180fda28ffff. 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/QMFME1994049.