1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x7b1c496ee7d5de9d8a82d78071ea29d3a57efae8a30e68d710a420fc4e84bcc5. 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/70773369-648e-4f3c-8fcf-6fe4c61fe576.json and https://artists.proofprofile.net/proofs/artist/70773369-648e-4f3c-8fcf-6fe4c61fe576.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 → block OTSBitcoinBlock must exist at that height 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 0xa85159d111cb5155a80fc5f94975e5516db0e7da6c4048a8440b70a97c40e36a. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T03:43:46Z), 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/GBLFP1791937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b5104e3a3d464e23e956dcab9607bc07bb725962c76c6cc4418c2a0effdc832. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZHN61989524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9511223c5173e7ff692c276f92df2eacc8ae22ea00b977c06da6dfbdb814a25. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZHN81925372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe15d365e4eb2f9c3ce67480883c9dc1f7b51f37c50d11f4dc6051e227c2f24fd. 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/QMBZ92090733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc48436986813368f5ec1f5765c600d3b42728bf3cc7a03fd88ecf54f2486702b. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/QMFME2009317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2525648ff2f329c8f205ee4c6b8a5b86bb14cc091866a2ec007c1c3e4b4852c0. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/QMFME2128509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c034570db4ee123b2e6086a50ac3156e4fd74b8db6535ab552c2c2214cd8a66. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T19:55:33Z), 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/QMFME2128590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f6c5cefe27c0cb166a6aa6e3e96617ba9ae299d17ae420ef271c95a468a0797. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QM6MZ2214682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1be744552280fc1571e3a25cef44ee718b9aeb86223dfb5f8036d5da29fefe0. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/QM6MZ2214688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa70cbc639e2bffaa03720a35415cf55bb0636044ed9128138649e1794e74701b. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QM6MZ2214700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0e4b6780e8a21d46e18505c4eb942656306ba377e736fb0f4d37f1121544dc8. 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/QMDA72247545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08f9576af5543a08b9f4685904f0e1d8c2dfeadc4ab86a88ba86912329006cbf. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/QM6MZ2431170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5be51a8e3bb96ab6e80287a26a4fe2755a91e53b47c93b013698f2deb3775fd. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/QM6P42429021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80aae0cd7a608e0ca0df932359a65eb14173fed539003ca2ef9efa92b7a585d6. 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/QM7282448112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe54297b45d352be1d0dbab4baa46737646ef887fd8bc04021a08c9bb46c6be1a. 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/DGA092375559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d467f8fc1fe488d0d1d7b9d4effab2f59b144fe53a0834ff0cc21bf7f447bbe. 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/DGA092375562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a4e9bff1db8d062e79cfef51cdaa666ca179fd2324f19a049f8adb1e7052db2. 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/DGA092375566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf48096f309f926c649c6c47b8549ee0271b408487bfd6ad6d5436ae3c48594cd. 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/DGA092375567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7eabe5e516aa1a0622f266665c228e49b7fda80d28fc3dbcef4c21f9839fe261. 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/DGA092375573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09b9ff9574af276bee94eb11fddba59867fc7ae19e3b102c0a5c88956ee7a77a. 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/FR2X42507228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6550462e918b3b90264570bf2065ea5732e03334ab7f3132c2e7a9c2896be240. 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/QMDA62422369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d210151a0b6af0f8848f9e8f26cc0607481cc867c04f7c262a78977d094154c. 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/QZDA61961217.