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 0x3f1290cb4eeada322e909d56a7097ed274f3d6fe858d09f15ed0b5b8dbc3f19a. Chain 2 (Bitcoin): anchored in block 953724 (2026-06-15T01:43:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8b71631b-7c8a-4f69-82b6-c8e94d6c85c8.json and https://artists.proofprofile.net/proofs/artist/8b71631b-7c8a-4f69-82b6-c8e94d6c85c8.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 0x6cf82f90f471026e62dd4d7e0c87c3eb3da6524b923a5ea5e3b86842f512d171. 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/USBAE2202265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdf2e76d726610cfddea9931de6897125b3c83f413f2641c40c7ae00c3db4006. 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/USBAE2202266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6496802c6df9c3063b9219ef929ea490def41b5f398ac0f85fe5bfa92c6a86e9. 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/USBAE2202267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5615c05694da99fcc915e6b76a5ff9e2cb63d85c786bc3ed4c059645be4ee4b6. 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/USBAE2202269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73a69f4420ccc25b9d8705be6a5ce4f76ec0d68c3bfe6b1b3a7338b9f95f43a4. 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/USBAE2202273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc8aa014140f412d18f98509c79765f048ede5a76666352b2de0e6d99fee69db. 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/USBAE2201647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc48a6fd2b3e102cdf0420166030cc6fc4ff9823151973b7ed90052a62beea954. 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/USBAE2201654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb202bba48f6004f9f83911d800d60cd4bf4d661bc976eef797e41dd4bb5e92e9. 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/QZK6N2252583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7def002a75796f12e35ae2366b292f9bea24bec90a5d6a99db73708050e0793. 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/TCAFO2184063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98e520db21b97b16388f84fa4736b0710c03cca42bd94594a2732137731d1e04. 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/TCAFO2184071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4345819818fe245b1ec6b07f2cb57a35ef529be42dd761baf7d679ce14f5cb06. 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/TCAFO2184083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7782458b36be35291209efceba411678b2734233a112597751feaf62881fbb93. 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/TCAFO2184090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x931ef2e8f24e78d2b2f5716b7fbb9d180b08512099a766526e178293ca085dea. 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/TCAFO2184118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe405f0d0bbc2ecc9a2b312e8fdecbca13a264e88f5f25eb5ccc02733cad53880. 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/TCAFO2184125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb285eb6287e951cad9b8f1e2205410250785a4169a1f9e8e20f21e1ea4ff46b4. 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/TCAFO2184132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0eb43c5c7ce3ee777f8c4884f66ee4f6f1df93b04a177b5269400b198145cbd. 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/US7VG2109869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ba8645971db333af2870796359cb1fb6eb29d2655bcdcc4f5f2f32c7989516a. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZK6G2256960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a0925efe5c91c0fc096cc1a12819dbb0759c3a7bce26ed9095c7dec4e224796. 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/USBAE2206701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x420a7db219d5c05926d8bd9a786dec158455c1507e3aaee187205701c618b28f. 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/USBAE2206702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x073b4dea971f45c6cbda282ba856e17ad06a94fb7935decf6fa36427f3bff289. 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/USBAE2206705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39ed703f622fb3322b2a2e7d7df9fc20c71ef8b64940dfa3bed5fd5076bdbe23. 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/USBAE2206307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d3918eeca91506858d6e37889e88784dad44f683e260286bed8b15ecf27fe38. 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/USBAE2206308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa76e138fdcc06b35b3f4f6d51adc99a03948c91c67d7a0f7b0ab096f3c2281b. 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/USBAE2206318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x401a152e3456430c7030b3e63cd9ea7e6aa2e05849ec628eda5b9f449f5d0ec3. 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/USBAE2201156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87ffd4be6b23b58a02770723a7c888f12306e56e507246e380acdea737060220. 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/USBAE2201157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aa9252a24e5b3ee5310743c588344032d165e7d06e61b7b47758775d49faef6. 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/TCAFX2109612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a0197ec3988761428f853c60fae48626849d6f7fce227612ae979b1bb3c14f6. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/TCAFX2109619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f0a3854bd85b0c14b98240a9c37e4df3a0a581a59cd4c35a7b87d78279b1f30. 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/TCAFX2109668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81d194ad763a1bc7ceeabaaa1a65879e96d966b7711e5dc0fe940c7faa8bd0fc. 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/USBAE2206009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0169cfb5404869944f2ce73ea360afb2206aae9dfa7fbe6370a5c8a840dc7466. 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/USBAE2201475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf61bab10b6f1eb604c48bb36ac9b23343d005184e18ee27afd97290a14fe7665. 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/USBAE2201477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb533ead6514ac9b8c3b4ddef0914cfc11e65c37ee1dce55c8116b6318a75305e. 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/USBAE2201480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0c4d4db423339340d6fedd852305b1af2fe5f6d1ac9346f871a3b4f04439571. 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/USBAE2201482.