thumb|Pandora by John William Waterhouse, 1896 In Greek mythology, Pandora was the first human woman created by Hephaestus on the instructions of Zeus."Scatter-brained [of Zeus the woman, the maiden
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 0xa35014bc8391194fc7142715d9597c3380611bb36d97da93fc6c20bbeda6f644. 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/e3f6ef4f-0c54-4f45-bd42-3827771e86b9.json and https://artists.proofprofile.net/proofs/artist/e3f6ef4f-0c54-4f45-bd42-3827771e86b9.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 0xa39e8a7f35afcd16564307d26fee85a4c94a41dfbfa528a094c7225f301259d6. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/DETO41548055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa71888d18e29032cb1cb222fc3f98f0017f83d06bc2139fa222361bd87ceb439. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T16:58:47Z), 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/DETO41517734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09849cd6f0bc6812cdfb33938c9db12cd78c2e4259d1afd6ba4ee65873656170. 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/DETO41534181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e3bc02940c4d0495c823288fc36739e87374de23b956aef818816b100bea2a5. 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/DETO41684449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa87d1ea2bd7e0ba698040fbf6861acec13c704f1321706e6fce1e6d4bd12dcce. 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/DETO41496553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d9cd6d162673df53a80cb9a652adaa4464a050baec610bd4db0a60d15a5f404. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/FR2X41575171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd706e321a1aeb2693018aded0ea124e7f48312e540a35ef63abcb055d2cf1c7. Chain 2 (Bitcoin): anchored in block 958476 (2026-07-18T01:26:56Z), 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/QZAKB2438270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8bcc91600a12f67da72e5eb847a247ebec4dd0da97701deeca8f41991ff038a. 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/DETO41725096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10381726bc428937437cfb1852b72733240aa8cdc37494db3f2242873199d539. Chain 2 (Bitcoin): anchored in block 958756 (2026-07-19T16:12:29Z), 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/DETO41888983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e900c4588fbb284a660d0e99b29e155212f05a6802e02b9523a568314f3a64f. 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/GX7852200172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x423244d9183342939671498e7b2a53a4498dea33e2155eb4c0ba93664d5221fe. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/GX7852200314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x423244d9183342939671498e7b2a53a4498dea33e2155eb4c0ba93664d5221fe. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/GX7852200314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01d40a4c5bc9db9553d254d6db101c41d8e033397dd59cb36865eb33fd163d8e. 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/GX7852200324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01d40a4c5bc9db9553d254d6db101c41d8e033397dd59cb36865eb33fd163d8e. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/GX7852200324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d57479911d2cb34517edea32c6f6d248877dbf8b88e9b02bacbb42168ae76e6. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/DETO42316022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc020a07ddafac031cd0191df348894fdf07530322fbb3e707db1eb0d7af1f079. 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/QZAKB2515200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf404ec5d71dee2f4f995f7a530565d0dd72fe78692008a6eda8f7bbae8e222b8. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/QZAKB2527370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9df09949c0c2c7b58319cb26628a09c469df9870f582fe861cb529e0a8d56aa5. 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/GX7852200476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10164a36543fe71a57ad3498cee5d40fb5f522f10f0846c26ee89cb1320ce46f. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GX7852200179.