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 0x24e3df01220890b9f28bed48f26d176a28a7d62ab1a29dbd71556a89b7f7d1f2. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7749ebff-c2de-422c-9b8f-1eca28b9f726.json and https://artists.proofprofile.net/proofs/artist/7749ebff-c2de-422c-9b8f-1eca28b9f726.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 0xda8a3a7c586559e1e5bdda1ae52b351274f2625e41f6530dc94ca431ab5f1ba0. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/GBLV61819279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f527bf0abced83eafd4dd2c2921e576b1184ebeb472d5e18adedf86a88e7307. Chain 2 (Bitcoin): anchored in block 957067 (2026-07-07T16:54:37Z), 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/GBLV61819283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f1a9ca7653c82c63afe97b21012cfa6c6e2c117244eb9295edd6628c4a65ace. 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/USZ9A1850201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10cfbee6bc6cc3a984dced465887e7cc6673856100c58edd9a34d77b9b7ef4ff. Chain 2 (Bitcoin): anchored in block 960198 (2026-07-30T02:21:55Z), 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/USZ9A1850101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x417f4146b7415074654e982ee0cadba4076ae479b540a89446001ca2d6b9d20c. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/UKJWJ1900311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1660844cf899cdd5f1d7f3db2da1c64a2540803bbbbfc90e955d66571fd04c09. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBKQU1937142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b0a74f19e8b63a25f134a04ed3c4c3d06cb1bb049807c5becb3a012e7e59824. 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/GBKQU1905093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74a8a73f8c7cd92cdbb9877f40759508e8deabc19081d12b11ca90e7de3319d5. 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/QMXJK1100434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71f20407388f7c8c5aa655c38cef74e22f622ee1c6234cee2285b9da05c3041b. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T14:03:35Z), 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/QZ5FN1765803.
Nothing But... House Selections, Vol. 03
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb98f7fea054739e62396ba6c78a0edbac67bf750f8e955768975df62b7346739. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/USMKV1831101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x679e233f1e6d7df7626b2017709f1a30a4129e43a2d7a28821f49d555dc56bae. 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/QM6P41701034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3db1836c9bac25c997e313a7c02d597d1a6e7d0a9016920b742fcb9bb53b920. 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/GB3EL2000510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd71acc4ff0d62207911d0b093c1a68684f4b5645ba72d2b4c1fa18f1115bfd99. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/GBLV61614807.
Disco Revengerz, Vol. 16 - Discoid House Selection
Weapons of Choice - Underground Sounds #6