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 0x5c1836277146113bbba87a29f2a202bf3c60573c9d6a1846c34e0e0d7c6a9fc3. 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/9895e97f-a74a-4398-a2b4-f68600da289a.json and https://artists.proofprofile.net/proofs/artist/9895e97f-a74a-4398-a2b4-f68600da289a.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 0xd8b9a8a123bb50e2b47b4b2d53000c049376317420f5162a73f744cf75278fb3. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T12:02:29Z), 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/SGW502306387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde966a3c5390f7a227562221fd5b212ac263281898af78a77ba1a1b3ad6860ea. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/SGW502306384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36f40f45c801ba3162c02c6274f351ab2ceaa0f61a1d08eb7b76286ae4c8b749. 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/SGW502306385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75c05d26652e359cfb212d3e8de4b37b3a518f7cdbe1bc0cce2cd5cec16446b2. 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/SGW502312214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0e4e6ae2b6e41dd0c5139aa9b416d3de43b4af2ba69aa6830ca46b3352fb784. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/SGW502312215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44403ad5f8158e2df3d8eb01dafaaeee8dd20edac03b3f6b2b279273e91760a4. 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/SGW502313605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc0afe980e5d2765028467d8a7e6f8877241fbd6275a82504ab9a1f876f69a9a. 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/SGW502313607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6619ad1aed2ab1be2f5f4c675f2b7c6ad76c12490443493eb8fda1184a3c446c. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T13:54:20Z), 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/SGW502313606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd50f64a2ba91d3b58d3ed9958dfeb8ddfb129fdec1a8b3a80809dc7deee6cb0. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T18:45:22Z), 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/SGW502315753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7956c185319f93776c648ae08eabd1717a25d3bf8ca7f2983f1283072dce1ad. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/SGW502315754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a4565849433f82184214dd01f79a67a875dbe4e58dc7f6521bac85cf8f3bc41. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/SGW502315756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x988c137bf7ededb2d3de52c628281dd4e33dd0930f3ec165b020a9f8ee0b7038. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:05:10Z), 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/SGW502315757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26d2655e4f490aa4ffdcfd04083496f67d303eb588c01e1620d86d9ba397177b. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/SGW502315061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27e654adbc9ceaa08dd4a670d72e557da752a064f2d2184a84fccef2df6773ee. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:47:59Z), 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/SGW502315062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9954328c872fb931f5fe158e3b61864d0b73916760a18a3592e4303f3a71e06e. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/SGW502315399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2526c38a954318fc78f04ee424b0f734cabb8c1b7822656721f9f935a1fc049. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/SGW502315400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbca384ad27fc468a377d2d750a710f86e94b58ab4b3bca4c2c75c154731ce118. Chain 2 (Bitcoin): anchored in block 958644 (2026-07-19T02:21:25Z), 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/SGW502315403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4124b4ab1ae808a5d3bfcf6ec05dc1749f37fe024d4623c0a12a839cfe130a26. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:10:43Z), 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/SGW502315401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17da05287829c3bee66e9c197e02b6c0c916bd380495ebff3198175f38108453. 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/SGW502315402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf4486aa4b766ca67ecacfa040d74e10231455f9a97aab507fb853bfc0ff70bd. 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/SGW502315083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56273e6fb878405f4083ecf930c12e1be94edbf9fb18b2332b1fb17d94a90afd. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/SGW502315087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83a9ae2f3a8cc618bafbf2684f3bcc03a1d5a85785095645acdb7ba6f40a5daa. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T18:01:47Z), 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/SGW502315086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cfedde95408b06c7983b5f2d2e8f37287dad04b094593c9b5f12731a949a923. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/SGW502315084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fa3cd66e7ee8c50955063f9bf00f768a0f6529bda03cb6e960251820e12022f. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T08:35:18Z), 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/SGW502336458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97fd6e662a14fa963674e2ded6b4ab252c5fe2017d75bd0edf5925e885ad73ee. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GXD7G2413283.