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 0x9819dd8328326979d1a9357d57f846ff25135c307d6c1b55ad54d2c57097fe49. 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/03049cd1-b284-41da-8e8c-3aca0a167cad.json and https://artists.proofprofile.net/proofs/artist/03049cd1-b284-41da-8e8c-3aca0a167cad.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 0xe675a133e3ceb14d7f1e6181133b80953b5fc17480d728add4a861371df16e3d. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/TCAHP2307738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x995577eb9d43be2626c1fb70c89833534282114a5eda2e706d524ff14be87f15. Chain 2 (Bitcoin): anchored in block 957763 (2026-07-12T22:01:25Z), 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/TCAHP2378064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8602baed0b7de65da74e4ad15762dbf8c636ecc8a1aed779f18914fa6de64737. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/TCAHQ2314523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6a1366c554063801abbfdfc589473c8c5f9a08627dc1896da484188e00f3729. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/TCAHQ2364063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d06761598ee15d33211d946b8b2017f785508e23ed3b09482fcd74073842da1. 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/TCAHR2333337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf99cef24cc123a0eeb1933480d93af92a57336f37fde353d98c6f4c0e9fa017e. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/TCAHS2355515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52c656bd3585f86340985050cd47e5c616b6de4a1b3633f5e8d9328adf33e6d4. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/TCAHT2332821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e98191fe6b266db301bd60af8185265a718858f71b5ce991736ec5a17d90a77. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T13:59:13Z), 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/TCAHT2458398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3579a26aec2b906e06f622ca640ae73a7a5be81f755bb205ecd1fe5ddd98879. 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/TCAHT2486536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe848b4314fe50c12d36757b353f08bc1a47560ca2e8cfe19fe160ac3d36d0908. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/TCAHU2438339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5a338705d5e3031aba2d159615736d630f637b75a06193e87502815fe3caadc. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/TCAHU2465195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0721d55dcdd6155e52155fa8d52c683759c9f8afaf5947e6016988ad6f84590b. Chain 2 (Bitcoin): anchored in block 957767 (2026-07-12T22:25:13Z), 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/TCAHU2481093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34292dd31bde04a86f351a652d93ca753547e929a56d12ed7e2719ed6e73d020. Chain 2 (Bitcoin): anchored in block 957767 (2026-07-12T22:25:13Z), 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/TCAHW2460006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0281142efd94b1ec9747d174df7a14bcf2146fac3b2d3e49c6954f14dc13ba4d. 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/TCAHX2436466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79ffaf63b2bd96796bde8eb5e14ee93dcdf827979e2c0ca28b8fc8f29e46c2fc. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/TCAHX2436480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafcb04f0a84f8c75fcc92b6412154abb0cdf3dc70f44be5676803a63b8963510. Chain 2 (Bitcoin): anchored in block 957767 (2026-07-12T22:25:13Z), 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/TCAHX2436497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b8f146c47d7eb71ba8b43b114cfc9c88133bb978d62f060357b628f2209782c. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/TCAHY2426215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x724a0b62740e9afe3359bfd12fe1de6d9a2f027b53406374902d938fee53843e. 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/TCAHY2458713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6023898e9a2e2be884634894ae951936df8ba268f1a09e3a48168e57ebd619d. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T10:09:30Z), 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/TCAHY2478289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa118734fa6f58dd781104514f07c2c0e903d5ac788ef741eb8839ae5b18c6d71. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/TCAHZ2429656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9af38c0c301c84f077805a43d57cdce105e1f47d9aa7f0471237b8c014880e6c. Chain 2 (Bitcoin): anchored in block 957761 (2026-07-12T21:55:15Z), 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/TCAHZ2481532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7719528131d4fd2272bed7dfe4b233a4c6868900c8fc9359d22d6a79ede6cffe. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:28:18Z), 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/TCAHZ2491170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6db587a8b75dc029266a3aab13f0d31fe22e1df97307a16fcccb118cd0b32b24. 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/TCAIA2426827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68543ce8512db4c6bf986374c024f570f428b699aabd300ed5c2d2fa9f70394c. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/TCAIC2480002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3366696a76ae1bd70de3cd08a25cb783fc1dfed3294ac25610a0dd118b9fa7a2. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/TCAID2407078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53ce6ec0dd97628ee3fe78d23d0e2fcf525a7aad1f8332167c0a99404057dacf. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/TCAIH2417161.