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 0xe1084af9e3cd498f3bc05bc2527e958f0ca78d3834f3a4c2cdc5cf8a91801b3e. 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/6097b3b8-5d6e-413f-b35d-faaea2bd36b9.json and https://artists.proofprofile.net/proofs/artist/6097b3b8-5d6e-413f-b35d-faaea2bd36b9.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 0x6ea06fba79c0de35781b55befe47eabde48f072e9a0aeae973a353955c5fb281. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:16:18Z), 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/DETO41639650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe52a788a20ea7929110ddf905ed064d6ec79fb388642f80fff8de747f64c0ee6. 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/DETO41676905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ff27905b5d5993f3b1df0e2cc485b184422f7ffce676ad56d4c8457cde4fe50. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/DETO41647293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd6dbb56cb61573b0bb6fceade2ad3264efa9606f0823821dfc1b767b3966f59. Chain 2 (Bitcoin): anchored in block 957642 (2026-07-12T02:46:48Z), 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/DETO41502936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61c2cdd3bff8c66687aad354dc5a7c3a0e9c862b0afe76f11e73a44ceb93048a. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/DETO41591783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe8afed6cff39fa0bb69594e3df100266efc44993e8157f754a8bbd09bf41b04. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/DETO41577162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d1c2d7d5f552c21db63e4a3f925c1b73c36f1a82432d8c1bca63e54b43f31a1. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:19:33Z), 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/DETO41533887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa78fcbeba9c7f8fab418b677890f9ee3db02ad054c63d6f54c85dbba4cd2d9e5. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/DETO41549613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a61c490ffcf8d731eb0d9088c502f64eceabaacba027f69acd9fdc6ea98075d. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/DETO41632885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5861dbac93c30e6818060767ad83afe16df0967668d7abdcef438860b275aac1. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/DETO41627057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb23d243455c3b6b57466869a6b332fba144ef465aaa1dabaca2a99ff4e8b9610. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/DETO41749453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf223368d6d98f85d7e0dd765a419729d090c41b8c413dee0a74e1d359f12a9e5. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/DETO41701673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f4401c168e055af7ed8372d7fb43b1c8c17076b4b0eb569620913852e0bad55. Chain 2 (Bitcoin): anchored in block 957573 (2026-07-11T13:43:13Z), 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/DETO41822989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19d06aeda15a198c2a60e5073d98bfabc594a7b69f8d32630779a8349200ee89. Chain 2 (Bitcoin): anchored in block 957741 (2026-07-12T18:30:59Z), 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/DETO42106788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x656fca9164bf5bd0c1ac76d16ed84dbb47a492235a65bbf32292a509c731f70a. 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/DETO42178845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99a689a4fefb458fff4d97163ffca03bf2c505dca82c6d55648a3754c3b0eee5. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/DETO42185911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe39c244bc8ae42ee517cae80bb02ff89e4b258a5ee93f12bc81b0bb146ca3d2f. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/DETO42525201.