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 0x669eb32575fb6960d8afb564eac158d8a3055d10e46b476775f0a672d61eb30e. 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/3e23c897-a362-4e76-b883-621312a1934f.json and https://artists.proofprofile.net/proofs/artist/3e23c897-a362-4e76-b883-621312a1934f.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 0x0bc35a169f3f31f5605746b49c934ce3472aa3e0fd26e8fe60d38d781d57eae2. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/NL2QC2100617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49d55951c2ab0f80c704e8a97e8a58f5881c5ad8e0817aebda85776edcf83e07. 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/QZMEQ2222255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8223bcd826033b0a567f888b5465b50979e11013b208fcadcc024b4b6ad5e8ef. 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/QZWDD2268504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5812e297e0605304ba6de66a7584cf85a265a067cda662ba4881c0fef423e1ff. Chain 2 (Bitcoin): anchored in block 957884 (2026-07-13T16:55:06Z), 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/QZFZ62327271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f1586931340cef6761a7589a4c1343bfd583afd7f5bc5cf2951cd50d7d798aa. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZFZ72304343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8a7616fe508725279183634fd1571209169b4335556747ad7bf11899093777c. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/QZHN52391557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd72ae544944c3876ee8a05ec2fe52babd6ddcc96d127996bc4db690e50be09d5. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/NL2QC2101039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f5150b89346f1e5a198267b84dec209242f95c76a49b056c22a769c2145661d. Chain 2 (Bitcoin): anchored in block 958720 (2026-07-19T10:53:46Z), 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/DEPI82307609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f2c232c1d9b319def27fce8f279ff504ff7e8d9ecf7717cc9a1588ded4f4c76. 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/GB8KE2202397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c6006418207f214cad8fbdb060c0cb917e78804c3a813108d3d7ff41c5569c8. 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/QM7282300965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81c1fe7eb012ed3f7ed02c3ce351640599fb1c13c4ffa2a421291c3b10e73d2a. Chain 2 (Bitcoin): anchored in block 958666 (2026-07-19T05:00:30Z), 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/QZTAY2301444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9892a45cd1ef1ab326edfea8329c3e1e3ebd034139e69c9c6d5ab5ffc4c0083e. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/QZFZ42459254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddde7e962348569565ea2ead4cc3c43766006e14e045a8b10ae65cd894267b47. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/ATEK02356177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddde7e962348569565ea2ead4cc3c43766006e14e045a8b10ae65cd894267b47. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/ATEK02356177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44ecb67a5f678d9346d29cc1c18d5eb8c02813a5bca50d1a83e63fc965960490. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZHN42462968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89aba5df773eb48feab1edf307d74029b0fb5783fc8969a605c06ea55e36bc04. 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/DEXW62400087.
Playing With Fire (Max Verstappen TECHNO)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72521a6291623d96a395283ce45e49b68ed542ae612c1dd8106be1327998555e. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/DEPI82325515.