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 0x6bafa60b8ea7cc01fcc2eb18425a74a8155cc286ece0b167b72b1a4da8388550. 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/eaf22cc8-e39d-4848-9e28-6f885c8d3af2.json and https://artists.proofprofile.net/proofs/artist/eaf22cc8-e39d-4848-9e28-6f885c8d3af2.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 0xf2916d3fd74f8e2d41ed62cf087aeee0feac7fa8b857e46ec6e3fa1f2d7055cb. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/ES71G1629192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc8e2b6c764d59eae19490c9e16cae18de46bf6e170ab62273199d0fa3972979. 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/ES71G1629155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f4a1819d15402a40b54bcfc8051bf2a0df26833fedece81278ea29324b34c10. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:30:43Z), 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/PT7ED1700753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea96e5f639cd22239ba38295be4cfa3066756ac3a2b15e77c7f2171fb8477758. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/PT7ED1900002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7894639c1dd812b265a8e10f1a9308f476fa82f52e981d8abe52cab8241c95a2. 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/PT7ED1900032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38e75a8a45adbbf5f8ce5ec153c7329e7693b73e8b60cf74390e17b870b22806. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:29:44Z), 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/PT7ED2000023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ef87dfee9be1aa1cc4702e9eb3e5fbd4038381f113c829831023a8b44352f65. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/PT7ED2000126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82e0236abf61771d7f8d2cb0afe6eebe95b077e7327fbcc1b712989e625e0fef. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-20T00:03:10Z), 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/PT7ED2000159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ceaf991472bcf26daea384275eaaad57218269d3b9d57bb079b848c4ce4942d. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/PT7ED2000312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3793c8410b338f4c388dc33a9c0ac743d0c909ff94bdc9d6a90cf136cdf13c5. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/PT7ED2000337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f6f7de85a5895e2e22db031587c7f1e7265b0012dd11c4f631e77c0a81006e0. 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/PT2DY2100161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40096a010f246f163dbf589312d6440939857376f3226112fc4c7684828e58f0. 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/PT2DY2100188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c54d552dcf913d42ddc35925f5f2e45d575fc548fae22240585d512a9260025. 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/PT2DY2100212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6a4bb5a79adf0c481275766458bd1a986c04284cb095b5bff3b0a21db41496d. 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/PT2DY2200071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7436b5b650fb47ed912cc3213cb759e54b0755342c39dd203523537478ad1a1b. Chain 2 (Bitcoin): anchored in block 956485 (2026-07-03T10:53:04Z), 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/PT2DY2200238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd5f6d8f69a636ce9536e930ccd8102a0247f08b8f81b60a33a2a95ff9de6564. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:02:30Z), 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/PTUM72200266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x326965fc99685052080031a8fb8a80bfc13c498036e2687b19a5f7b990d294b1. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/PT2DY2300099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad7f15e7f70f8abcc1da457ca98e1bba09452a80c21465275d81ff63d9b474b5. 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/PT2DY2300360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfff8d2dee9d843a86842135edae6fb7451936fe029819406cae7ff4ab6674993. 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/PT2DY2400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfff8d2dee9d843a86842135edae6fb7451936fe029819406cae7ff4ab6674993. 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/PT2DY2400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4070aa15b7c13488054b1cdfe3e009a11ea40a2c7ff60efdfa23831bb982dd7. 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/PT2DY2400164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x052c59f3059537f179481f2229af5812d7a441d4c7318afb03ddcc4f4263b91b. 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/PT2DY2400165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03bae028eaa767a3f051918be9ad2f30c56b60d795e38932aea23bb28831aab4. 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/PT2DY2400166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeef888d1a32863f42d02130270d9bb90e9b5f18f5e4ac76ea716d1d5f0fa5c18. 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/PT2DY2400167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77160a17a2e6e36f97c5f81d6eb338ef24862c4dfc230578688e6555c01d0821. 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/PT2DY2400162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17e97e4b3d4c0c25e634039038c1c663094ebb6617241614bc4c1a9e8e44846e. 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/PT2DY2400168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf41e8af73059ffb7198f30fa58a73c17cc9b1ca96cb90ad6c3575b313e3dfbc3. 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/PT2DY2400169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6a4bb5a79adf0c481275766458bd1a986c04284cb095b5bff3b0a21db41496d. 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/PT2DY2200071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e0208299f093e1813db1cd13d8f02e028efb6942f913be5ba7f31ee5adb8b48. 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/PT2DY2400170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb586521ec7c56a5fbcef9cdf2264cc6ae3b3a16cfc48c1933855606b4383a0b9. 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/PT2DY2400171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68c40e9e7ebfd3c173527028840de0ccf699e7aed4d9b80ca22764fa516d08d9. 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/PT2DY2400172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x527d52cf6c384e047f661e4f1dc7b42232c733c44c44ea536e94186e04a51d2d. 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/PT2DY2300723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4dc66c787ce5044746706cd59bfd9a79b88ce4b6e4442a674ee7dcdff0cc772. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/PT2DY2100268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad7f15e7f70f8abcc1da457ca98e1bba09452a80c21465275d81ff63d9b474b5. 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/PT2DY2300360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1863ad44eeba3065ff8fab080a27986620f0085950f33c834561a99563ccfe2f. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/PT2DY2400465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b9c368e62d524c48bd6da43aaabbf850636eece8266c52cdd6d9076758b8878. 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/HKG732292485.