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 0x84656841986b2f2007fc4609715ab6e5375b2d7cab6c45c2f55b2af5de557b74. 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/6cb869dc-79b2-4786-9a41-71dffb1473ef.json and https://artists.proofprofile.net/proofs/artist/6cb869dc-79b2-4786-9a41-71dffb1473ef.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 0xd1fedcea51e30d2ced1906c80d5686b2015ef0e5350656a43ae2de058706b4f6. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/PLI367902710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24e523f2e76c8a25160892fe5b7d3497083db0d4f1e8f3aa0bfc4568a2a39607. 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/PLR331600001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20562b12a14ccf564d8a236583f0bcde75c254c5af780a8336837052a840251a. 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/PLR331600002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbcabe01032edd317fc3b1fd714ed5616102374e8120c0fc6c96c2088db2057d. 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/PLR331600003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5870feed8867bd9902b4315b1d12f33ca469b2433ddfa2fafb2dc51898f5fdf. 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/PLR331600004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c997271e5b20fe615d91202a33880d4376ae12c5eff54bc6f9b3c66246726fb. 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/PLR331600005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c6204506cc112478e94c37a225a56e002b047abfad9207f4dad6e03b0749b10. 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/PLR331600006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa46f67cf84a9f2290b610831924f9368b2d3e55fd1ade70a2bf18eee59cb093. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/PLR331600007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89a9a970071390bdaf96d67ad162ec251da52ad5d29a7b42fe85d9b2077d7d4c. 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/PLR331600008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x966399d46b0790670eb4a633b56a0a4790bed052d9c4eaa5763be5743abc7315. 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/PLR331600009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa90548664f4db87c6d65c69a7f0d2cd6b5442f3cfccf7dd36e05f3542a48c4d7. 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/PLR331600010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bb69c39f5e876c579aeb1f0e11f36ade2dfb29635ccfba1f0c3a8ea5032f722. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/PLR331600011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7663790d9c00753deabf1a077758e84d4988b1c02088be5ff806dfb655e8fc01. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/PLR331600012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x278c9517bfb470ed4570713e9486357ae6c5219fa370a384c8847b165c83d320. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/PLA391712301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb08b013657bbb5592151dcf3e7d13bdbd6a84c79b2e189aec1c6f8760624d81a. 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/PLI365777470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06bc5cb14df2a077e4ba4c005850485a371592f8d6057305f293e51cf606cf2e. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/PLI367817310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ef2ff484c010b46ce8047e1756166ffb80386ff61ae21608f51019dddee218a. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:34:27Z), 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/PLI362682680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe98a9ac08a4377e91495a58857ca925fa02508d3f5622c55f3c8f4fff572e92. 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/PLC271200025.