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 0xbb26432cc150d45d041372f966813db87a0f1f364133d71ef5eed49d08582c40. 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/47f4a1e7-71c7-4226-8c74-ad41e2a6e149.json and https://artists.proofprofile.net/proofs/artist/47f4a1e7-71c7-4226-8c74-ad41e2a6e149.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 0xd99648cb2de265c3aaf209484fa6691d1fd9f4d12286f6c3d300436a4a852c9a. 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/QZK6K2316982.
double tap (feat. 1nonly, Letoa & Ciscaux)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1c489a5b5dae8d348c424ceabd75d12c41b9f5c55e90ce0c395a76f2883253d. 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/QZDA42146116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb876075a96afeab413f5643cd841a6f3a39e6d4abca1fb33936c8d11cc4d3fbc. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZPLR2178399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f3da18f73defa8011539d5fe97ab0c0e11ef8355a9f579e190ca1f8b70e058a. 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/QZMEP2198627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63ad147b92d4bb021ac89a8c1c0da935f1d4f9cef8376fc96ada11a60b5ef060. 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/QZES82149309.
double tap (feat. 1nonly, Letoa, and Ciscaux)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1c489a5b5dae8d348c424ceabd75d12c41b9f5c55e90ce0c395a76f2883253d. 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/QZDA42146116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40bf4f32d2ea8fbf701da4b3e290c71df5ce6677c3fff82a8096dcb232003844. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/QZS662274766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf47b8f619d526ea82030d0c409dd247310d1094a8e0f2feb1e10bb0100421c2. 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/QZFZ42221106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdaeb459430dfbf83d292a59e335a4e70a990ad6ce30ccc4c1e1d853b8d01cdc. 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/USWB12105818.
MY BODY IS A BURNING HOUSE AND EVERYTHING INSIDE IS TRYING TO GET OUT
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc5f017de9eb8f853d50709850dc93213c7c78e589e7d4600dac12247856c537. 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/QZES92187651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x280115da021791db7e37017db91380d6fb591f5093d791632a6ed4920c11ff4c. 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/QZS642209652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d8a6feff3cc994d513f1eec6502aa8fc5b6dd06b85dbafff3698e7d48f46eaf. 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/QZMHM2386799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x280115da021791db7e37017db91380d6fb591f5093d791632a6ed4920c11ff4c. 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/QZS642209652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4682e61d74dc7dc4fa1e3aa76d6c1db0a405634174a70a4dca072741cd38d745. 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/QZFZ62107957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3e8253cfae05faf806846c3d7a0ee90d1eab1ad00524193dded782c487582b3. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/QZTBE2383250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e609ca1d9eb9beadde2d4f31ccb86f495117014ac548c9860882f26eed1e39b. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/QZK6K2184097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f348662e4ca8327668e91dd2c25dc3096340b96a59408940594c6741cd588dd. 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/QZWFU2494393.