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 0x8cafdce2088cda46987876fa6abc91069d1323fe382b472cf8f5e42be7597cd6. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3d1f74c8-b5c0-4637-bf8f-7a2da2b71a4d.json and https://artists.proofprofile.net/proofs/artist/3d1f74c8-b5c0-4637-bf8f-7a2da2b71a4d.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 0x65d73d69de11cc7ba11676c6880658db3454fa90686e03fa1c26ae5518279568. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:48:20Z), 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/USDHM2001764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e0b2bb6e6c2ae8f462e87c7541aa4842926ac0e77fcbed1dbb46a166535938f. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/USDHM2001765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61411c443a7e4592b1da2e4671750ffe9f4d2a70152fbb09eb585880d6bc0292. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/USDHM2001766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d0a0da892695cb5e1acc9b8a032e0fa84a1e5a7bfb6ba7f344d765aaccea5e4. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/USDHM2001768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe124c2fdef26084972c6208bd2f511e1a7e4c7b57f39f2ca6895b8048ebf84ae. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/USDHM2001769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65e580a49af28b7b0dcac6cef080a823deb56a00f204103d361f56139390cc79. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/USDHM2200999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fd46de4ee1b9a7e744c4737e359fae3155aea64d54dc8a537a94fdc45529212. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T11:07:44Z), 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/USDHM2201001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a2c5e230accf2c04b4e863e238f4e4a4875585a705d076013f49e73bc93507d. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/USDHM2201002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6f414f94cee0d2532a375e4667685728954a5648adec8aceef991a74276eea9. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:18:08Z), 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/USDHM2201003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e3cb15ee4f883d8e53a0a5a84c8909ece47f3d59c3fa7ffbe17aada37540822. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-17T02:05:00Z), 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/USDHM2201005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3002e07c2239470ebc6b84bbef876a788935b6d728d0d6481cee29f259b4d224. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/USDHM2201006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x986fce47ec87a40d2b0669c92eda97d52f55dc4f155d61bb8245f11afbd76637. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T00:10:11Z), 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/USDHM2306703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d7578f3dd952839bbf00202bfd92fb43428bb27b5b76343836a80e9ca1e2832. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/USDHM2306704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f3134c758b4679f735401f39cf4b53c4dd51b5f4a24a41fccde411bbf0e45bf. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/USDHM2306705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91e5aa0ed33ccf49bb27866251ab4711a6b678f71534bf9fb9e35cad2bd7d1fa. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/USDHM2306706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24fb2e1ac0312fef3b30589a512cf7bd58f54c632c0328fde67f51bad34b118e. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/USDHM2306707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1afb6f3ecadab7623fb7b8bc05b990ebf0a257ec175f1e4792474a136af62d9d. 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/USDHM2306708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97eb0a129cda972da73bb417aafc8519bb939b0e83f031bd0bc2ccf46f058778. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/USDHM2306709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde5740843b7bcfe3cad56bad7f383281312571b06367556efbedb13e12bcfd4b. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:53:27Z), 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/USDHM2306710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bcc93e3ac3ecc9a8440a5ddca37a30dbde8d5292d6e4403dd266f67d0e3cc74. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/USDHM2306711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x349ebb780fd9e6c67199e27a993259aef7077cd7416d362d1c23120f3d3383da. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/USDHM2306712.