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 0x62f4b16364d92bc7e00ab6295fd03e690b9d3baa1da3373690935a7a140544eb. Chain 2 (Bitcoin): anchored in block 954573 (2026-06-20T15:45:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b5cbc7e2-5af5-4274-baf7-8fe579ca4f5b.json and https://artists.proofprofile.net/proofs/artist/b5cbc7e2-5af5-4274-baf7-8fe579ca4f5b.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 0x7dac82ad4e5530bb88b0ee40b7dedd2c141a4e466f899d4293b24842e377b637. 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/QZTAY2314991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69d72848f3061883070042147789d5d4a942e849cc50008dbcdf78b67d144ecd. 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/QZTAY2314998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe862a4377692bee61b8a7bba33cd0b9cfe0df2dd00271a9cf482d9466c5208f4. 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/QZES82408626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb85edbc207505af60ffff074e874ac8f061108de205067eed8d13036c51e10b. 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/QZES82408627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14f1eda078e3de3caf89b7e0f8a5ef3711d43d3683b1310dd3a4fb1ef1bb5dcf. 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/QZES82408631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xead5643c9dd1d050dacae878497eac0fb3fac9adb613e558abc3194ae3ab3c00. 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/QZTAX2380759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9554c549192db41ebad2156d8dafa4848163be6d73c0c8328df89e6b6e2009a3. Chain 2 (Bitcoin): anchored in block 960179 (2026-07-30T00:39:11Z), 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/QZTAY2315000.
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 0x6cde3b319a3bd9faed742287080526982c2ee2eaaa6f598f84749e28a2845338. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/QZTAY2314997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc486c6fa0c2c42c5a13d9bbf7afeb435713ac5c6dbe2079362943bbb9fdd9f90. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/QZTAY2314995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1baf4a4344ef78eb71b706d816b3dcb4409d7dde06ca565be917507b96d15081. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/QZTAY2314990.
Private Pyle (The Hard Heart That Kills)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf234e4b367aed8bf670f0c48b097df0c06ffa2fe2bb9c3c362178d6547ae844. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/QZTAY2314993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6cf83cedf136a762f755ce053e96e51ec0d9ea0c6dd1ca4eb11874bed0c0043. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/QZTAY2315002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbee7dd3cd6ba0a1c6e926227ea2734c2abf5b0b63d1b49226eb05ed7682eff58. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/QZTAY2315003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe18a541974a156f9a026ba4aa3dc5d1fc11a9b10d9e9f5879005781418f04200. 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/QZFZ71911711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d6414271032a9722961709b9a303b44bcdb83628f24b4a114fc70c14abd5d91. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/QZES82408635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ae1d897e4eaa239d01dbe81fc32e9ae8472bd8d522fff32586210ec5fa4034b. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/QZES82408640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x679213a78168c2cbb6dff03daa74548975b030f757fbe0c9e40d7af4d2ab18da. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/QZES82408646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc20ad7fe2e86aacaa884a5cc9b277baa5fb9627665689955396972aa68a17262. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/QZES82408650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed36dabaf04439e6cbf8acd3a0b2fe3e95e25e47346833b772f299ea87d2990a. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/QZTAX2380761.