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 0x7fa45be362b0f4a660644f330017d653f8ce4dc98559f4d573b25fe1f7a1ea7e. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2177306b-ee2c-4345-85f2-907353141b1d.json and https://artists.proofprofile.net/proofs/artist/2177306b-ee2c-4345-85f2-907353141b1d.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 0x7b211f7cfa9c898282ccde97f9afc3f0884fc3c48261948ca8c0cc4fb3c66dae. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/TCADM1877285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a1ef66ef3598ac1aaed46c3934ecd74d381705df03258b0cea78e986dc067d9. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T14:16:06Z), 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/NLG661900787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fc4ca757b784d788fa5d1c69a04025709900655bd502917fba1c108f2a12437. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/NLG661900929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7018adc1dbd779c084914a23c6b89dfc9215396cdbccc752199bce3a6305ab68. Chain 2 (Bitcoin): anchored in block 957961 (2026-07-14T05:58:47Z), 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/NLG661900931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c3c29bc44969f390f308bf374a4d01a635d1a847f6217f0bb9c6df96b154496. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/NLG661900935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x212b1e764950fc348c600159ab5c0696ce11d6095584db70a5a751e0b11fdbf5. 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/NLG661900932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98220ad552b1925fd19f484574c8206cfa3b7f64d59b6de25a64893de25332df. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/NLG662000271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x831b4f4568baf1392aab2a5bc8ce7fad9092e8adee98d5f68180784c96af71a8. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T10:16:29Z), 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/NLG662000365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4631f95b735295823d0879725c72629061292465cf3dcd68272baa6ce9f63bc. 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/NL3GQ2100275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17f92b3dbc9da7c18335e9ec6128dc4eecb673df7e637a9d4fb5f2ac9190c8d2. 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/QZK6Q2498866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c7df3216cde23462ae50911526d66a84ecc11b00f519a68b1793b959897610e. 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/QZNWQ2462419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1aaf318791a20f3d34b87797f5afbe027fe8ca3c5faa133b612b6ed32b8f450c. 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/QZNWY2496632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bf787dbf8a239c81106ca6855f3eae540fb4cf204dc3ef728dfcf3d6a7c718a. 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/QZTAX2435589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x190e98e693350804268c99c9eb2e8e61d02b42e74609d3e125e8757d8f24e954. 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/QZTB92497930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x190e98e693350804268c99c9eb2e8e61d02b42e74609d3e125e8757d8f24e954. 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/QZTB92497930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ee64257383c6d0345bad93ddf26d62dd74b290c3199d661a19ad42f4233c55d. 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/QZWFJ2447049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33727a8dd63a3a5b2c7fd51109c5012eb4dcd0fa4aaa1e6dd2253eb97086cea2. 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/QZWFR2402757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2662fae3d57067c530c0151bc5bb5eaf1d8abe6d6ced0fd12f6b26e9707347f4. 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/QZZ7M2438015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2db97ca7971ce273a05f825403c5b9781e8034740747882bd9b46077d3290817. 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/QZFZ42540983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86775b03f0ea7b7db0216879ee47a7442f02a0a0bbbb1e9eb18b89f1379bd5fb. 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/NLG662000593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9176e35bda17f9377e98bec6d32cf281605e2b10826638c310db6efd9e901f6c. 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/NLG662000653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9004f2a661b6d6799c3361539d6f66055813dfac85a3a56c388575d3bbf600a. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/NL3GQ2100271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86775b03f0ea7b7db0216879ee47a7442f02a0a0bbbb1e9eb18b89f1379bd5fb. 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/NLG662000593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57289afffd897caafac34812d9a89d0cd5d02cacf7ab8445442ad3465a551d36. 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/NL5HJ2500025.
Hoe Dan? - Mixed by Deejay Abstract / Hosted by 4Shobangers
Top Notch Extravaganza: Summer '19 (Mixed by Deejay Abstract / Hosted by 4Shobangers)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e2709e44b24ab7651bc705a4228aab541e007293b49ae6bc18b0ded2372d558. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/NLG661900668.
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