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 0xf346926545cf2319f899188ce63daac8b323d56c5b88affe4595edf5353e4083. 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/6871e282-4e40-47d8-96a5-1658f917ab19.json and https://artists.proofprofile.net/proofs/artist/6871e282-4e40-47d8-96a5-1658f917ab19.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 0x9e2861b3bdac0bbc0c1f9ed379dfc6cb2479a71f96b84dd133284d1b72163286. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/USVE30600290.
The Gamblers Try Their Hand At International Diplomacy
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc72fbbfcb8e43b16c7be388d6e53e12760f8215c180af63af82b73b473110ec6. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T21:34:21Z), 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/USVE30600293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8adba1280c592d673f953883de59c4b07e349d12ed322c2fe2491625c6190e2. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/USVE30600294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2df062ea10544be587a843c28e4dfe988363c1462dab3a97f961d7f250e1c3c. Chain 2 (Bitcoin): anchored in block 957613 (2026-07-11T21:37:58Z), 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/USVE30600296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a4ad1d3238b99fd7bc58b19036603c80c2292b01bb57264dd70ba62fed78d76. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/USVE30600298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12aaa56afe642522d9b140bfd86a9895e06d166a2dfb9dce393dc1ab193385ec. Chain 2 (Bitcoin): anchored in block 958682 (2026-07-19T06:17:12Z), 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/USVE30600299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9a63249b0e0f5c56c2158965e9a13c8b68e63b065a9d541014d398e136a8fb7. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/USVE30600301.
Dissdissdisskisskisskiss (Featuring Todd Congelliere)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x908a7147ece1a3f4f5e0e035f20540e916701c977c41b31fbbf3c87ccd9b8287. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/USVE30800560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5146545b6f8de6b5b11f5896ced4a1396c93607e156c6beab58c5daa3edcc43c. 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/USVE30800562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x325f09e3d7207171cd5c6e96fd623b0d0c3683cee9a7e88b432e7413861ab034. Chain 2 (Bitcoin): anchored in block 959096 (2026-07-22T03:48:36Z), 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/USVE30800573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98005208eb05e2aedfa9747d3437bf043720760b330bbe69b19ada199830ee42. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-21T23:41:40Z), 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/USVE30800567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14c9c9b357ac55cc00628e00a801f151364ec9da6a62f14f97f9e1507caf1697. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USVE30800570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb62b043bbed17fb5a2dc7ba9e622f12396267abe696250bf0bda5a052b2fa981. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/GBHAH1200064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6ab1bcb0cbd5f808db8b5ddd328fa2d5b5ef0f613550b240c4cb3ace5c846ed. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-21T23:41:40Z), 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/USVE31200953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42a4b36260689be1910974ba57149145b2fb54a06149d0e1ef32b5d0cbdc25a4. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/USVE31200959.
Bonzo Goes to Bitburg / No Voices in the Sky
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd021c4275389516c43120228ae95e900581f3cef97c94039d14833635864e288. Chain 2 (Bitcoin): anchored in block 958733 (2026-07-19T12:51:21Z), 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/TCAGN2270209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4039af5e05eff729ed6afa135da75f96325840c56183d5fccf3f1ec15df77216. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/USDBY2300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c9fb3b6a7d57d04232398e587e48a547ffc7a8fbbabd36f1df39111eb3f7faf. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/USDBY2300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52565b148e1320b241b4e5d9742560f2a405f94a597ce991ede121cbaff366d6. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USDBY2300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31bd46463c5608555187a1cd154b186e3ae03b3c2fe9dab36015e56f22cefe21. 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/USDBY2300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c6fcef0b05369f1354a36ba2f3424c31abd8f74670ce444ba75720ac05ccd98. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T18:54:07Z), 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/USDBY2300012.
Father Christmas b/w Shel Talmy Mono Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46759b33e17a16105289bbfcb8befe2f36927613ecdfc297d66a551619774436. 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/USHM91359919.
Punk Rock Halloween - Loud, Fast & Scary!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a84069a07484650fc6c8b247575eada0e74f6f3b890f5b49b3da1a24ed9b0c4. 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/QM6XS1704665.