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 0x69269054ca613ea01d7bb8dfaa5802f0f1e2760ad2a1eeb2e5885d0fc0bbac66. Chain 2 (Bitcoin): anchored in block 953596 (2026-06-14T06:21:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0ab4af5d-68f9-443b-bf48-a9b36cdffe76.json and https://artists.proofprofile.net/proofs/artist/0ab4af5d-68f9-443b-bf48-a9b36cdffe76.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 0x499ddfc82b783351536609c9b9c3bcc31bbd8fe1bac6b20c45b376bc44ff4c2f. 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/NOWAT2401010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55c73217430303148aaf0fc45a80263fbacc9a81e46765db7ce3c0a51bb42a7d. 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/NOWAT2401020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe972e84a76be4c76b99910c4b377b2defc877d1879ea9175aad09d407e12fd33. 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/NOWAT2401030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x950642e6a7ae57692d097a65bfce39ad245a1154707903883925a9219a1eaefb. 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/NOWAT2401040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3a1fe1e912af2bee4bb52e83e8aace26feef924cd75504c6c92e9775e9902e8. 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/NOWAT2401050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf038d90911536311efe145c9f9811b272d72eb4011e698a8b2372ca6b6a0282. 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/NOWAT2401060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc9d36572ddc322c8c62a00b36ba7777811ae690019f8814dd9ce8f5d9f8eafc. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/NOWAT2401070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x191c48848704f04ef5e879a68cd17d3f8d6e9b34dcb4f570da85c9bf69e10218. 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/NOWAT2401090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5175a65ab8ed0d1ede98f1d6814d4514d6489e13c4ecc8d12a027816000b292. 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/QZMER2490732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0aa7e37ee65547c4261c7cf4e6dd21af464c050727638f16a216b3bdee229d7. 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/QZK6Q2389249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x499ddfc82b783351536609c9b9c3bcc31bbd8fe1bac6b20c45b376bc44ff4c2f. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/NOWAT2401010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55c73217430303148aaf0fc45a80263fbacc9a81e46765db7ce3c0a51bb42a7d. 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/NOWAT2401020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe972e84a76be4c76b99910c4b377b2defc877d1879ea9175aad09d407e12fd33. 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/NOWAT2401030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x950642e6a7ae57692d097a65bfce39ad245a1154707903883925a9219a1eaefb. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/NOWAT2401040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3a1fe1e912af2bee4bb52e83e8aace26feef924cd75504c6c92e9775e9902e8. 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/NOWAT2401050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc9d36572ddc322c8c62a00b36ba7777811ae690019f8814dd9ce8f5d9f8eafc. 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/NOWAT2401070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x191c48848704f04ef5e879a68cd17d3f8d6e9b34dcb4f570da85c9bf69e10218. 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/NOWAT2401090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3bf7d9ba569ff5a7d9637aee19656f122e95e0275180360b5fb12dcab6b55f4. 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/NOWAT2401100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60363b55c37e89836cf4809eedacaf3b93522d35df80d60c6b2bdafe676b0f38. 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/NOWAT2401110.