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 0x32e985cce9ee3ca28573979abafaebf04dbf5b14c0fa2159491a57ef31302304. 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/3a0a0eb0-0820-43e9-a06f-dc6864f14513.json and https://artists.proofprofile.net/proofs/artist/3a0a0eb0-0820-43e9-a06f-dc6864f14513.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 0xf4bbaa4401f8928160973df55be8f7fdfbfe9d9344453d94435f8c60b7a7c91f. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/ZA56E1403247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5a173ce301a328d68ce77154a42b23784629965b811fcf70a6a81bd3dee2317. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/ZA56E1403252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d2f538fb4e0144ca5f35dc0b4cf8d34be862d2795894049ccde375c634ecbfc. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/ZA56E1403136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fd98a863efcdb7a8797cf6528e1c314c6fcbb7c28aba397bbc2f32643a18ceb. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/ZA56E1403137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aa7f677c1041f2ac11a5383d5eb432a1ca85f5815f8685f9f04fbb12fa5a2a8. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/ZA56E1403139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe32bcd94e30e42dc36ae0118377257c18ccea7ae0183653160eb2bcd0682758. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/ZA56E1403140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a59700c41b393756602d0f24686cca572dfebe762123f04de8e7d88afa16aa5. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/ZA56E1403148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75ec5c6d8fa1b47da8b192cb658dd574098c97806749abd3778db409275302f2. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/ZA56E1402077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5e6b761bc6bb6ffa88433052bae5bfbfeed8d5bb2f1931183318c7e725fb1b3. 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/ZA56E1402078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5859c404a6e6906089bdd765e3ea98922c5664e146166daf91d5c97cb502254. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/ZA56E1402080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf63dc06af5ee6726e5c6b3f62d66e177d189ed850d491f9a1362f4cc2258c2a. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/ZA56E1402081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bd928fbafeefbea2b5e79cf3e88593f3cac63fc80b229ee4988632ebc938537. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/ZA56E1402083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9c4b99ac74a6531715a7b1e0c023b04f3e770d21d8c51794abf8d13e24c141d. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USA371602929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27b80c78bbe9c3a72b0e838b3dfbf5b48abc14327549989bbc5d7aa5867db3fc. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USA371602930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ff00b9f485c93ea87b04d012197b1fed22a1aeb22f224d6356dd931a48848f8. 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/USA371602936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bc0e9824186e2adbb47a5ca2ea354d6d585a7cd9cd785f67ff628c7a626e26e. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:28:02Z), 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/USA371602937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x279588575671b58e159d52d3b41c6c715283d98d8971d531127a90f5aec44101. 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/USA371602938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc574858c812a5ad4433e1f5834a3e978b18d8ed87fffb101b023a3f49039513b. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:09:24Z), 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/USA371602939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x828b3678f4a29afd6e399a84ea0b5c2a1d08c05eee6b01bf9dee9cb0ea5cc6a4. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T01:25:03Z), 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/USA371602233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9df5547f14a125d795db49272af91577f5596bc6cb712607db3726d1cd80f85. Chain 2 (Bitcoin): anchored in block 957644 (2026-07-12T03:18:52Z), 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/USA371602234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1e29a3017dd033c8d1411beb070dec13915a6cf71e0256e627e20a5c6bdf98e. 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/USA371602235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x595a5857013c786795010d3a1fa2a0fd5c76bfb7c67791777d28bf78f70d935d. Chain 2 (Bitcoin): anchored in block 956861 (2026-07-06T01:57:57Z), 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/USA371602241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f721b2568cf232ba16c07330ff23e0ffb771ca2aaf0a6e0c53c8e6029f5d14c. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/USA371602243.
Uloyiso ngoKrestu (Victory Through Christ)