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 0xc47ff25bf61005b5b142450926b14316978954316f91668721942d58a662e39a. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4a72e3a8-ba02-4206-934f-09b7a864b1b8.json and https://artists.proofprofile.net/proofs/artist/4a72e3a8-ba02-4206-934f-09b7a864b1b8.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 0x52ce8daf03d281706720e24fd91cca1c3184a1d53553a492b83a9e15a172c0f8. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/USDW10110084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa727f14fdd2fa1f55c15fe988590835603fa6b232463d6d7aa6333d63c9872b3. 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/USDW10022009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f5f27b9f2386674012a1a026507ffd95008061f23b7de5e9c6ec619345ca2ee. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/USDW10022008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70fc838f4fc9dd282e6fb137f17a09bd355970643767b906356ef97d76224436. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/USDW10110088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c2c02cb719460657bdf9ef9dd49c0843840ff05c1900635f51c538fe910b971. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T09:46:09Z), 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/USDW10110085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76db281db92f240db47015c3773466648e8e4bcc4afdb275ceb59d70e16a3b83. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:23:02Z), 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/USDW10110086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac4218623ee15b22f80a7a497d0af1465e109dc88e52eed4ad0ea517bd262543. Chain 2 (Bitcoin): anchored in block 958510 (2026-07-18T06:38:22Z), 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/USDW10110083.
Mercy... Dancing For The Death Of An Imaginary Enemy
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ad427fe6de3dea83531fa8bc49509085aafa93c92229e7a7a22b4f8e2dda94d. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:33:34Z), 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/USSM10704254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x393b7bcc521c4dfc5e5a94bdc97d2f1acc74b97b5f70e93ae0e9c323a310023c. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/USSM10800041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5267560882d6385385e735e44534d3e0a046b3e421378bf20197933fb977fde5. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/USSM10704255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41b118fbff8ef5a87bb75e0bb2332b4df17fc86175fe3d8e70e026f9ad43757d. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T17:50:20Z), 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/QMFS62400068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x697d773ea536a5f1111a02d903d60abf41d4aa6ffe09f681a32fa1f4c42ab534. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/QMFS62400070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfe6873e640ff60c46fc616db42b93ce95a7715a8194a7c972810f38ba04177f. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/QMFS62400101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xced30cba1d8ea00a4411989582adcb5dc158a5ade27dcaa8e933a6ca8926fa65. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:47:20Z), 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/QMFS62400102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2cf48ee8eec28a6128698b8d425bbe53c8e9223e4482bbbbefae4fbe5371c4d. 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/QMFS62400103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee83618c36250985b00ff3fc5a6440d0176df9259c33b01c139a3a86f4cdae92. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:36:43Z), 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/QMFS62400105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c81ddb6c7ca17f348bf1134748c9ea094170cd9810b109c6ec3b476a9ff2b05. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/QMFS62400106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6966d9b129567121d90052f346e339b74ea9053a899c4d731bb5a4a16fa589dd. 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/QMFS62500119.