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 0x04841ec84833d8b90ff1e042c46d2cbd036d30e9e5ef8e8279ee23406cb07baf. 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/2bfe8b79-c52d-4edd-b2ff-d08737757677.json and https://artists.proofprofile.net/proofs/artist/2bfe8b79-c52d-4edd-b2ff-d08737757677.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 0xffade1819447a1b19cde83df319579c46e97e87df53b3d3f3911dfd79af54bec. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/VES010900074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13930cbd67f36127a5956c08a31a594803db9fdf0aef94abe203d73be948d0ef. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/COSO11200025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa785eefefc7b12e8c28f73095039814b231560154cb325ab2435fd926449562d. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/VES010900072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28880504edc97f599e3ec9b8d3e061baf56dab7676f118ae174dce41dc88037a. 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/COSO11200027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e8185f189712cb2b02e7050f27e0d17cde64cadcc59538d16428521f06fee8d. 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/VES019700087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0a0685f9e0ebcde795fa2a38c6239bffae65148d356a39ab96ccb8b4eb839a9. 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/VES019700090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72dd598cfd58a3c8ab585767d0fdf09102463146b32b93cc926212a4aaabb925. 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/VES019700091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6991a3d65148ec8df976ea1b5a9456253c09243304836405b63c6b88889fbe35. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/VES019700084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5017edea3e36ab5c08f150bed51f39eca4f463623282e7f559ae28475c839090. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/US3SK0900061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fc87c4a78e3a1a5ff5e5e78cec32a654ce78d389eab1cabdb46943fd1cc1547. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/US3SK0900062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef016070d86b0b2da710c33e3ae4bc000ce26559327bd5a7fdab54f591d22ea8. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/US3SK0900071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ff504c67ab680053f8d9fa8a8d53c872bd72e3e092e9be8a4389fcbc34268c6. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:02:56Z), 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/US3SK0900023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd00ec3a2cf2d2e49c66f246a529365d35794607dd3ee05a6721b933ebf93a9b8. 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/US3SK0900024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ca6ab09a9d296ac5f2cc1c1032120afe3c1e19128895e6dc439703adf4ac64d. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:08:24Z), 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/US3SK0900002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bc9090004d241e1b04ba5c6605eca6e92a5a70605de95ace9ae9b6986b8cc38. 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/US3SK0900003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa9cfe0d5c22971fa4b6b861374aac0d5eedefeda31db18b14a6da1e84b5debd. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/US3SK0900004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f0db08bd842618e4ae9d3b3b03553a3ac38b6873823cb725dc16402b0c5f021. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/US3SK0900010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8415fe2f6e28a14be575451787b0258f3a3ee67f4793d4d21fcdc238a6fea43b. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T09:25:22Z), 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/US3SK0900065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x148ab6f9cab9eb5dfd26fa33dd60ff63365c9fc5d02e3f093b23ef2689250405. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/US3SK0900009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bb55b806050d8e40df2f076855084322d22f5cb8799e826bb9702ef05b5d127. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QMFMF1515802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00310ce5b2ab97587976df51afa0c927441bf2c66616459e6e3b87fa5d7fbdb0. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:24:54Z), 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/QMFMF1515803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cbb461858ec25589b20897b1f089a48281f5dbe8f2adc88a69e08b3c13bb85c. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QMFMF1515805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bcfccbc9ce129786fee67fdacb0158090dcec0ddae594f636032e1c24758977. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QMFMF1515809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdd60c554e5571c624fcc312109ee913cd377b2f60a5441f17ccbc0a72d7d30c. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QMFMF1539971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x234ae2a953e7101101ceec72600a3e78bf2c3d9a87813ffc2e0bc160d5230871. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QM6N22087180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3de50898a93b4917799ddd6e9839786bb56d534f7b3e138ac91d4f7b11da78c. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QM6P42054639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8d74c5706bac0aecdc49a967873c30b1c800b65140f87981e4893d73c5faeaa. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/US3SK0900001.