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 0x51dc531e8b2806a12c5094482837b1561963c8034a634621e2942c01b5ec5b4f. 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/272f9386-4859-481b-8c12-1f88d5bc0974.json and https://artists.proofprofile.net/proofs/artist/272f9386-4859-481b-8c12-1f88d5bc0974.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 0xa9eb518864ea5cc74c0a794e88fc28f46c9e82c16052bc4ce844286d53851a39. 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/ESA012193885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8596aa0ce15045343114641890eebd5675e8cbc2c4048017d1d59a525a7baa4e. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/QZFYY2322922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f2c3bd41561410c9cca31013b451d40497f39af9396e16552260dc3419d7419. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/UKZGC2503329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49bc4654f44c0c407d11259fe71d2e8437f6b41a02179834401584e73959dc89. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/UKZGC2503330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c888ec534a3fe14ce4be80b097fe9c03909763b42ee73862f05f3b709324959. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/QZZ8A2481095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82f03b404fc39f1e8caa2e04c0727495fd18ec1c94c7efadc76c3700a90506bd. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/QZZ8A2410059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cbcad0b90f3e5647c26380dc2a134da884a64fddced0ca4ae8934397bda6007. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/QZZ8B2466489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07a1aa66935083092d5846a9213e959033f3aed7e0f1b5e9305278e4d968ff4f. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZZ8A2480772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7569b22f90348236e6f178f132291f08c9fa7c0a170d7b1faa60642ff2b12d2b. 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/QZ5FN2511782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4715d2b1cd3262d06f4185e6f95f48150fe38cd5c83533cefd95f659a79d580. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/QZZEB2304342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75918466b003242db443ca2bce313eaf47800b5bbece6d28653a38a49129619e. 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/QZWV32401763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07d78ad80f62e6cd8ad6a3a4c117655f4c791b4a1d089b7bcb9d216740a4eaf1. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T09:11:53Z), 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/QZZ8A2428408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeef3ffc642ea68d68e56150829dbf1c2ce87d00271fcced2abf3b7dc7a5c3277. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/UKZGC2507444.
I Love You Like (Luke Rain & Schuz Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9af75d749937aac5a063d9fb8111d40645f43e83ae47d2c17db7c5ee63b7de0. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZ8MT2100067.