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 0x7ccc3f2a764c5ec39b5e45fa42db131ed26510fb0fee733f281c6838ca26309b. 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/742b9f52-81bd-4283-9427-db9ec86dc684.json and https://artists.proofprofile.net/proofs/artist/742b9f52-81bd-4283-9427-db9ec86dc684.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 0x03b617ca53d7f800735072a774c538810d16bafb1ecbcdb361847cce3b03d197. 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/BEN582101085.
8 Cubed Remixes (Vol. 3) [Truncate / Confidential Recipe Remixes]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e7fc53dd7785835d85f27d3d12b0247d2f8f82a6d2921e140bc7d4b664e537c. 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/USA2P2437870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9cad6a2d412626424d2724ab424214254f8eb31476d2b20cb71a1acf3a128d4. 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/USA2P2138292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf784cd73ccfce98083b2fb8e9ebdad9ed8eeb9ee52b6d430ae2bb7e738916e2d. 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/USA2P2506888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75c4e23a4ad838eb9a3220ec7359ed19259d236cc26a31a1cc018760ea12aad0. 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/USA2P2506889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7374d3e42eaf234ed91cee07d5e3c63d6c7552f45187388878340474f6ff3b2. 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/USA2P2506890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4f5eadda7518a621c24182b70eec299b25d6e01b00d2e146199aad971a58f91. 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/USA2P2506891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92843dc1aab3a202cf07fc7d9f10d85d4c667f8f9b4c6fd656fa7f4a97411a27. 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/USA2P2472789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4971b92830fd19f301e700bcd8c30386849e67e268eb6b4ee20797768688f13d. 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/USA2P2472790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff7f984ee53c79befe3893004a4be1ae777400e499cfc37a6891aaa45e6e7a12. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/GBJX32110063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce7b8ae2001a73af67f76fba6ed69fa282640d861273fe68a7a983e8fd4b26e9. 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/USA2P2251677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7842b1ec5a5ea4a5e949401ee46f867d219b33ee798c583c91f36f62d47f3b91. 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/US4LK2203221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb749ce60cad14504185fc9a4f70a15636ccc27834db69db6bdc28f847bc0be71. 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/DEBE72200556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb698d3b3d1123fa42179f9719b0f3747fbf999f12226bedd595060d76d329024. 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/DEBE72200557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9862cf3d1ec3642e585f09f1d90165d05472ef7c64c6c9625d87e4a7e5b20ddc. 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/DEBE72200386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00d4c51ced1a26fe3606405777aa5ed358ac6e6692cc849ff416ea1e04137e23. 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/USA2P2209107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf015108aef5bb50a16849525a8958ce571772e5e273e0bcbdafdcc009922206e. 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/GB2AF2100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x994358848707dfdfaed129d5a4c0f66871a44988ac051515ad4c0b000ce116a8. 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/GB2AF2100006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x507e9933b63fe4abd88a3213df76a50622fcc5914149aaf43804be1cee2bd529. 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/USA2P2019817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x945320f9cb7c7b499200379dd1869450c8cb575309ce4ee93c3900c367ba466e. 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/PLE071911205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59be5c3621bdf739250fe9fd707c581ee7a9fc38efe5cf8397cfdc4e5b2c55b1. 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/GBJX31973011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bbf3b499751ce4d3643efe2fd4f28e7f1d9479f391baeaee8c253d00b7b2dd8. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/GBJX31973012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38fd015b992ea71465df702d67fcf6afb871098f34fd121331a608bb14ed114f. 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/USA2P1928364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfde1a586a638e25f1a24b989f5115b9c8359c620b6c770d887a70aebf54e09cd. 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/USA2P1928365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98365b836597d050504b8c1b0aee3fb835bbb760da65d5340fc1c4f887d4a97f. 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/GBLV62006977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1c2b5689a8f24f2dc352bf63d5362701cbeb23d7fbc2fa2a6aa2505f709e7da. 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/QM4TW2211496.