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 0x206a340d15659cc6aed934d464607f3ac2703620d383cff883eab49242525cc3. 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/b48e0026-69c1-41b1-bef4-8c726cb0d819.json and https://artists.proofprofile.net/proofs/artist/b48e0026-69c1-41b1-bef4-8c726cb0d819.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 0x331f6e53d13935318cb56da72a72fb9814e9c40970ec2759c32a8a1de48ac236. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZFYY2171259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x406d742dd4f63f61b506f4dd8458b0e0602eb02475ba940886995c28ba2b2b7e. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZFYY2171260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6e9dec51323546e720f661969b9b454cb5fb516c3cff5a8da20718cadef0f03. 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/QZNWY2030854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14969a5e6273375347ec9ccb9f3ae7316bdbb0b5af125c0936d9e62e068ab86c. 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/QZFYX2168650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2497e25a6abc83cdb5195dbda4037327bf82a371ec47080319ffa1c8331c017. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZFYY2171262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c4b853d80efd43768599b2c74d7e6385d9c3874fb333fdd81cca66105e3586f. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZFYY2171263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1f1b2f176938550ba6fca57081c2fcf76f385b63b3674b5a8251edca0759565. 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/QZNWX2063514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbafb5263bc0a012121e16c721c456a689a46d52be26dfd7b7e8c6dfdc882ed8. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZWFR2312531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ec68c7f9d123de7749144b32bb2a9cc0d1aa0103538306b75c762d4d9b72400. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZPEW2448593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfdc9aa6ec3a728a7a4ffa676f663f0d0906354baf1a8a454c16f836babf879d. 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/TCAIA2484821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48639d27ca711572d8624807b95fa23e2c1c2bcbed286fc42b6bf0568f751a8e. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZS672234264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14969a5e6273375347ec9ccb9f3ae7316bdbb0b5af125c0936d9e62e068ab86c. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZFYX2168650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6e9dec51323546e720f661969b9b454cb5fb516c3cff5a8da20718cadef0f03. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZNWY2030854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6084e5e1b41d9ea0659e220a12483e02cf3ea4322bd019348664d858b134e39d. 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/QZNWX2065067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadf6895a851c68c96a950afee1f80929e1467270a8ae24e57e6a6af2cef73f43. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZPLR2025159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b5ef49055b7fc3fe63ea3082bf7b2a62a26fde1a7972f07fd09435f8f4f3165. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/IELOI2082480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8af12df0a361ca4a6145fb1a25c73eb1a955d6a606a0465eea7d220a2f10606. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZK6F2011694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff5537a0959d5a3c423228abb5ad85547533a04d7d39ba6140b1c90f3afde900. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZWFX2446404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x219a5b380b258ef07c043157cf299fbaa8667adffa903cd0fc30089b14cb45b0. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZWFX2446407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe75b8671435fc6a5aa967da69e2f57b23d02d76a5b89ef9f53895e3c15534b56. 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/QZHN72203751.