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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2fb78a6d4b03be5202742057fb0b65e64525d2ef0a211e85c3289c9ee1889ce. 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/eedd2ef6-ed62-4424-a67a-83d358755722.json and https://artists.proofprofile.net/proofs/artist/eedd2ef6-ed62-4424-a67a-83d358755722.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x464dc677b7fee49f878d68a09b8d9595b2b6ff41972366e62ebdc21f6d70f953. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/QZHN42238510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f512e33a8b5b3483ab23efc868d88f9c049238e84338582b2aed70fb62f43ba. 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/QZHN92284018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73dcf61548f8bebefca96b97db7cddc94f4c2fc4ac7429fcc0b32a5ba4697835. Chain 2 (Bitcoin): anchored in block 958873 (2026-07-20T11:48:10Z), 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/QZK6L2267583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4048c57b8e032047cef0280167f919295b61d1cf3802ed5e030467414f33f344. 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/QZK6L2267585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4353172a6241fe1183bbb602d02ebad879d969d1ee311368fa6baf5e76aebf5d. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZTBA2278800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2167ff61a98ed07851a286cb750b0bdd6293a45d57b23436abe992ac3fa129de. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/QZTBA2278801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77329d45cd7ed705be78541cf0a9e3bb03cc8a9edb56d90e4d7ac6355a70f2cd. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/QZTBA2278802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x749639702b6aad32cc6a2ddf91a535cf06b35c20603a98ccdf3bfb67e6bcafcf. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QZES72316248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd49dcd658ef8b004d53c092434795fd72a09bf543d2a9e2b2cf69f8e7cc17622. 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/QZNWQ2365348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a2074f2947b3ebd1b5650c4d2dca18851247060d47431c88c8c363e925476fa. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/QZTB82381467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1acc59646978bc592f337f0342666b6ad8577654ac0f2d4e499220aaad1f2da. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T16:17:58Z), 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/QZWFE2338239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3fb328856d5cede46fb9ba36c758152d9191c5ce8a451e726fdfab4483e1633. Chain 2 (Bitcoin): anchored in block 959089 (2026-07-22T02:17:57Z), 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/QZFYY2432812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x186fad3e9f5b165ea6e7981514c13ce7d0ef06df58c94949c6434014660c19c5. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/QZES82451939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c093dd88dd68fe71c67bfd9cd85a277680a1e8e44bb0414ebdd280ad97e8475. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/QZTAT2417148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0722529b3cc7046a88536e1be479810b3c2cf4b6c714b65f9808635c71a18e8. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T16:17:58Z), 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/QZWFE2477835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6015e7ee3dc8bcf9d43dd0b8bd1699fd65780f338f621cce86efe227f3150958. Chain 2 (Bitcoin): anchored in block 957556 (2026-07-11T11:14:07Z), 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/QZZ7V2494209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d0489ae89f07185ae7ef5de74a36462c014c9e489965208e48f0a51ff3ffb07. Chain 2 (Bitcoin): anchored in block 958376 (2026-07-17T06:41:00Z), 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/QZFYX2501903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadc6ea947263edc175a938d546b5c193db3394caf0c8577a6cbed197f2fe57fe. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/QZK6L2579685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89bde13ecc6219c98f590fc79fe526074da06db2bb340ee66e2e6a904e7a7be7. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/QZK6L2579686.
CAN'T RELATE (feat. rachyl & aurainairy)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8686b01213bbe5181bf9512b1989e25eb257f673975095294f3548a96322136a. 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/USLD91752185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfecf1649ec3b8956c85d8b49694ac17c1aafc09fa4abf82be873fb5558e4d9f. 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/QZK6K2300400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae00c816351f164dad3ef036339e806edf8412a6ba574e866d3a50c4b707e070. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/QZNWV2361952.