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 0x6cf0f4bcc9b71caadb57bc4c65a8829577a186e3362d09e7aebce71e2048624a. 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/e83cbc93-0b7c-4957-93cc-724178e0205d.json and https://artists.proofprofile.net/proofs/artist/e83cbc93-0b7c-4957-93cc-724178e0205d.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 0xb480c89e447e364d443206cd99e4a5e3a1dbc9be29f038a7e982f6fc1b3cbc14. 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/QZK6K2341719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60dd550539dc7d8e7775d6118da696630b80e19431ae94a790aeda06b7d3a37c. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QZK6K2039006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9449454b4b34b551e61d28e4ebc0158aac66e1e697c5a3bbd624faac8cdeb005. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZDA82031192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e9ed7e1d35b393918d307dbeaf26ce6aed885e89acf09a5cc74c6bad5661fca. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QZHNB2061361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa10bbbfec8d1ff6b2469676f0c32c53bd6c06d9fedf915e8f571a57eafce559f. 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/QZES92267845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd28ebc134d29056ddd4da072dd812e93048b8002efa01014b492007c40b6fb1f. 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/QZK6F2262780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07c076d60feb605836868df2ff027de722e4cd85496c0437488387ee9e9c52e2. 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/QZK6H2218174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6173252485ab6547b37faf42441aa18f205a2d7ac94e203f2f1367713263f7d7. Chain 2 (Bitcoin): anchored in block 957011 (2026-07-07T08:25:35Z), 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/QZMEN2293636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e444b282dcc4a9c5f71cda7af1366b9e1e5aefaa95d8e93e323f6b96ef03f7b. 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/QZTBB2204602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e444b282dcc4a9c5f71cda7af1366b9e1e5aefaa95d8e93e323f6b96ef03f7b. 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/QZTBB2204602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60dd550539dc7d8e7775d6118da696630b80e19431ae94a790aeda06b7d3a37c. 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/QZK6K2039006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9449454b4b34b551e61d28e4ebc0158aac66e1e697c5a3bbd624faac8cdeb005. 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/QZDA82031192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e9ed7e1d35b393918d307dbeaf26ce6aed885e89acf09a5cc74c6bad5661fca. 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/QZHNB2061361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa10bbbfec8d1ff6b2469676f0c32c53bd6c06d9fedf915e8f571a57eafce559f. 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/QZES92267845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07c076d60feb605836868df2ff027de722e4cd85496c0437488387ee9e9c52e2. 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/QZK6H2218174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd28ebc134d29056ddd4da072dd812e93048b8002efa01014b492007c40b6fb1f. 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/QZK6F2262780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6173252485ab6547b37faf42441aa18f205a2d7ac94e203f2f1367713263f7d7. 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/QZMEN2293636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e9c9adf0796371bd0cee242558cd5e448f5f4fa0affc4be0c0c062a76d6f7ce. 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/QZES52438433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa10bbbfec8d1ff6b2469676f0c32c53bd6c06d9fedf915e8f571a57eafce559f. 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/QZES92267845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x067e69b4c425c2cb65618543aa88f9faa62663570e8154227075d37a80eeeab2. 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/QZMER2334672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83c3701efd127a2e4bebfd8d24de665a9a3b90b262624ccb7f50a02476235db2. 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/QZMER2334673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e9ed7e1d35b393918d307dbeaf26ce6aed885e89acf09a5cc74c6bad5661fca. 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/QZHNB2061361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa71a8ccf576a96defb037f683d33a3aab7a9fe5710359c991973df6f3a34e453. 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/QZMER2334634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08b8aa901da1802ff560b1a08cbe973ccf04599db269e8fc3e83f890cdad4d35. 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/QZMER2334635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9449454b4b34b551e61d28e4ebc0158aac66e1e697c5a3bbd624faac8cdeb005. 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/QZDA82031192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60dd550539dc7d8e7775d6118da696630b80e19431ae94a790aeda06b7d3a37c. 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/QZK6K2039006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07c076d60feb605836868df2ff027de722e4cd85496c0437488387ee9e9c52e2. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/QZK6H2218174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6173252485ab6547b37faf42441aa18f205a2d7ac94e203f2f1367713263f7d7. 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/QZMEN2293636.