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 0x023afb256fef65a6c65b211ec608d0d0a0d9c6736e64414d13a8cd3cbf3fbe7b. 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/8ef1a5c1-28f0-4bb4-a876-ab5a3d0fc8e2.json and https://artists.proofprofile.net/proofs/artist/8ef1a5c1-28f0-4bb4-a876-ab5a3d0fc8e2.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 0x175226d50a5d96e7e15d9a92e7a67557b6ba6ad07d90949ff7a064f19e433a71. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/GB72R2000084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89684d9fe8516be8e316908ae72f4b2adce0b90fcf96743a0fcdc97bc4fdb0b8. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/GB72R2100008.
Take on Me (Acoustic Guitar Instrumental)
Take on Me - Acoustic Guitar Instrumental
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x125fddde195431a5d87c164f330bf1fcf88ea16a5e497890da88dfa82a3d6a39. 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/GB72R2000059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdc0e14f134cbf9476e07b5f391d66972b73f45db4d6931d54c5e1b9d567971e. 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/GB72R2000057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x203f3ce5228186682eda33391d01790c133a9d0eaeca039a292257b3bb882190. 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/GB72R2000023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85a698178ba915de875d9b4bc1db31e7f743a215dc733c65870a13ca7cf688bd. 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/GB72R2000024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aa305c18799974db4fd804c210a56c1b243175e3b88cd860c0ee550879854d7. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GB72R2000025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3d198a82e692e2d49bf43344c0095240d6abed28ce391a87caa52450c2b1c1a. 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/GB72R1900037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd889dee202a30181876e4b3093d1a6d3aa96b8b5678e9ce2ead5e26f7343217. 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/GB72R1900027.
Time of Your Life (Acoustic Guitar Instrumental)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c0e43a929a52f8f688adfb5ace1c8869bfb6dfda9a3be5552847f6f3e0bcbe7. 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/GB72R1900022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11fbbec3d262a198d3336b366877815c89e068f3c582175e040e4c6bc4a15f4b. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GB72R1900003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e6759134ff86a1ef445d07156f5b59d704be8b89d4f289fb3dada901be85b15. 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/USA2P2035227.
Penhaligon's Presents: Eau The Audacity (Potions & Remedies)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb37a1ad450409d8962ebd83055aa9c66653f6505535f911a8163f2c2506e93dc. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USA2P2035222.
Cavendish World presents Lagos Orkestra: Living High