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 0x4e596e08937b95ed9eb0e2f314624ea0824986e5b6f68e89d9152d2cadb58a67. Chain 2 (Bitcoin): anchored in block 953899 (2026-06-16T06:37:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/12ec73aa-dbec-42cc-a03d-57d89ff34aa7.json and https://artists.proofprofile.net/proofs/artist/12ec73aa-dbec-42cc-a03d-57d89ff34aa7.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 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.
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 0x6a712d512f6116626a3263bde87f9bef615986b657aec8fa006dfade5edc859f. 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/QZTAY2314996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbe59c2ec3e0ef1f7baf5d6587cca86547e8853ebb348cb990a81aa33ef574cd. 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/QZTAY2314999.
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.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dac82ad4e5530bb88b0ee40b7dedd2c141a4e466f899d4293b24842e377b637. 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/QZTAY2314991.
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 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 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 0x208509c2fa52c8266a5ca7d1234e2e8527116a82107550319758841769061049. 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/QZES82408630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbdb276e45260a78e7a8c819eecb1a0c9a13b8096997e0df7fcac549f29d071a. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/QZES82408632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a5f798af2db68234737276f04fe724c467293e1aa475b44e3677827ef72ad51. 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/QZES82408634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x605fde98a27a1ff278ad4bee3757d23b0da421bfa2ce263d429c814b9d91597b. 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/QZES82408639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf5516dfef3482e495005bf48438c63423e0dcf7dc38f2c03771038d1a16f29b. 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/QZES82408642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bdbb7e1c1016c29276c9b928902d25e5510e216c43f084f403b55aa94c24f75. 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/QZES82408645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1284d6ab7695ade61407c86e0e6131cd15cdead985fcd34dd01785b21a9531f4. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/QZES82408648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a1cf37dd1e46e4ca4e261880c5ed2083b2cb179e2074e8359baccf24366772e. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/QZES82408651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfebe39bb7fa4345793a48a47e65f4d9705d4341b8c2e6fe44d4bd4c9571b9c88. 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/QZES82408652.