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 0xd6e0c040920803b1a934ef3b41d502442945073d7256de85907a793a02f38177. 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/0abde424-1808-489d-b436-2a1fbc24526d.json and https://artists.proofprofile.net/proofs/artist/0abde424-1808-489d-b436-2a1fbc24526d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Cartonner (feat. ZIN L'ANIMAL, ARZOO & AMINE K)
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 0x22f5991182f7b8596cbef10b8b4d68a00d725145538d762dba23ad650fe23155. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/CH6541875508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafcbd26f47b132976df182c0375cf0b963e7eba35fba2cdafb5dbd7fa51d08ec. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/FR5R00909354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f2ae6cb57b159fe4c3764f0cbd5e7874d9eb1baf07ed69283a7ffe2b101248b. Chain 2 (Bitcoin): anchored in block 958705 (2026-07-19T08:43:25Z), 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/FR5R00909786.
69 La trik (feat. Ziken, Didou, S-One, Arzoo, Driss, La Haine, Chivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66b54d1d111fef8b747304dd1f272f8cadf753e47d01bbb288a6634b320751a6. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FR5R02213522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5a23a8e419db133ab971c26c56b13ed76baca16b58a8f2283c9eb15842f8625. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/FR5R02213524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd896187bffd94aca009aea7fcec9a0c0ad4be7368486554645f35548b83f7293. 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/FR43D2204171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2081add010579aeca4da449c7d9f7592600bcb66abf05408177e20c75dc0fe7f. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/FR43D2207200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x394a89d15658a7200cbc8b6e84b218cb2dfe2e078b3234d90315b11b0364f8e1. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/FR43D2301282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefbc506469798013dc93712b1eae28b41db8718b573754ce5a286dce3f7d19e8. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FR43D2302255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37224c87135f0208930fe0ae16ee9f6454cf10ee3af6055e8a2761104bab50cd. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/FR43D2302256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe922d59c383f2841735bb774b80a2f9cf7989a42d77f8b7ccb224900dae541c8. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/FR43D2302257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3849d64caa2d6df692a8420e46e0471e5ce60674a581130dfadd0f1325ec45f2. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/FR43D2302258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00c2dec0c91f7661a695a859cc9ad4e8ab9120944431703aa3023da7ff86593b. 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/FR43D2302260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61db77f524b5df463408a4f0809199b872b9a3207f6e60b497f32694a229a98e. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/FR43D2302262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a3e8cc6a2b48131dadfe27f0467f78fe1186c12f3531fc5bf45b8a712996acf. 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/FR43D2302263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae87642d0f74c214d4bf56e7d9f7e9e1aab82808a2ac955d6ece1becd6853c36. 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/FR59R1974323.