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 0xa49801a9b5edf0507ffce453007f7c6c1b92edaec2b61d9768b3b9493a6423e4. 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/5db89893-bcb9-4944-a96e-ec196d7d1ed8.json and https://artists.proofprofile.net/proofs/artist/5db89893-bcb9-4944-a96e-ec196d7d1ed8.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 0x69896b3710c761e2730581625785652764e7d9d90cf85746502a5e6b0e0315b2. 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/GX53U2300846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6af66bd4018018313bd0844ecc2bcb74bef526994f8fbf5756a12e1302f83578. 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/GBMA22354365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c6ad8c2217425077d5ad96caa143b670905335000ce706e3a65cbb5746759de. 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/QZNWZ2439917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x677498afb342454a41845c15080d389b6c253964e81a31c5f538e79f86dab570. 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/GX3Q92487795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b4f008de78e56e768a8a50bbc1772351571f7cf5c11b5e03985ada2ebc94907. 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/QZFZ32446752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67371266c4d56134d5316f3a793d3b11f33069529cebc681c812abea5feaf92f. 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/QZTB22311785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7558588d6664441f70de6475c24626b9144f01141269b5808d9a09de5210087. 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/QZTAT2306008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe54512c62b8425b617ebdc2d569d9a83baa74a7118c58a0ee7ae77e9842bba92. 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/QZNWS2345984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7a8a7394771f5f1f4a19033123d1d9f2be802c5b2d1e8d165db1af868b3d6b9. 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/QZES72344026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc19d9acd4db5435c5f38b71159cbea9876a40c50f7d7fbc461eff7e479dbc999. 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/QZDA72322273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86802720ee52ca00a61ab9b060b5ba132d0b85353a34aa89a7695e0338869f08. 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/QZTB72294280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1adb50cd6925c349df5f0b5fcecdbcd81cec20bdb863d9949f36e73c836660c5. 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/QZTAU2257653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b59c6b8fe49f245eeaf1f1aef4e9ce3985257e53c2b65e782b45883e321b2bc. 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/DGA052207395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8209d6247f9f4e03c5a62e0a3199bd83d305c47acb89ef8ee9fdf26b2446f275. 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/QZMEQ2279132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bfd2a5f8bb67e011d9ba6baeb1c252680a7fc21361457b27193c7f84e073816. 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/QM4TX2237577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43412a25612f6bf5831a4e65b97a4e471a575866cb118f598ca3640bd4a89ea9. 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/USA2P2212596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe07d9fe7f9bfdda9460d1d4c34e2ac90539718dda7674dada9b9cc9f581cb3f6. 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/QZFZ42262688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bdf276989be35550f1e369d2dd9d7f200d01e120498c96b93ba6da1b0cd5d5e. 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/QZRP52103471.