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 0x7930e07f54e586efc920f8816b9ea4b1aed9000189b1c5178c3ff123c7b96644. 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/3b7988b4-7e1b-48ac-8dec-4484ebc627fd.json and https://artists.proofprofile.net/proofs/artist/3b7988b4-7e1b-48ac-8dec-4484ebc627fd.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 0x39861b5410eef61ce0d61303735e84abb676652b99357f3c6cae655b09d37fad. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/QZES51983565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39861b5410eef61ce0d61303735e84abb676652b99357f3c6cae655b09d37fad. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/QZES51983565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f8ad9977b7fc2af821f3ce3601c426221d94d2ddcca8a31c495e25dc6fb440b. 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/QZHN32023280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f8ad9977b7fc2af821f3ce3601c426221d94d2ddcca8a31c495e25dc6fb440b. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZHN32023280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea4db7712230dae10035924e5e4d56ee7e12b4b449cac2ea52b89d13d05bc744. Chain 2 (Bitcoin): anchored in block 958644 (2026-07-19T02:21:25Z), 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/AULI02144660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea4db7712230dae10035924e5e4d56ee7e12b4b449cac2ea52b89d13d05bc744. Chain 2 (Bitcoin): anchored in block 957775 (2026-07-13T00:04:23Z), 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/AULI02144660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57b11bb144fcc89730a412837d71688b411227d40edf12367574c4a0d796b9ac. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/AULI02247850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57b11bb144fcc89730a412837d71688b411227d40edf12367574c4a0d796b9ac. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:11:23Z), 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/AULI02247850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5e849fd9928b970407fdf0e1bb2c57e80c02fb561700cf4dd2f43d3253a75ef. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/AULI02351110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d9343fdcf3bc8a084687c31bb6084bf212b600084ae5ce4fa15d45bd012ee53. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/AULI02353490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d9343fdcf3bc8a084687c31bb6084bf212b600084ae5ce4fa15d45bd012ee53. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/AULI02353490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe51ff08e0d7b24badf209f8ee127bc638b016506217140125779916a986d8045. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/AULI02351550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36817e501b840e13d66058342717524181bbda7ba1193a08b97c76da058d0e66. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/AULI02353500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20a0b0498e54a3b9c0e5fb6eb9bfba53c65df2dd8e8079e1c4cd647b66c6d48a. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/AULI02353520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36817e501b840e13d66058342717524181bbda7ba1193a08b97c76da058d0e66. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T19:11:13Z), 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/AULI02353500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20a0b0498e54a3b9c0e5fb6eb9bfba53c65df2dd8e8079e1c4cd647b66c6d48a. 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/AULI02353520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7bd8a2665eb814cf4e135779687d097c3314a0683a348d50e29aefb2795b4f5. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/AULI02353510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f74bbafa1aa11f1c8720ef633700d433ad60966d999e1226a6a084f40375b49. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/AULI02459220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f74bbafa1aa11f1c8720ef633700d433ad60966d999e1226a6a084f40375b49. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/AULI02459220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee3149dd9559007d6795acc50584499b6acbbc687b0d8b3e10cf269ad327d64e. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:55:25Z), 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/AULI02461220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50c3e964484ba06df46756f70dd76599a3b67ccf62856398670a544554a5481b. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/AULI02460370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x669a9dfd7ac4ce7b75746a3d967d72c2a3228b1ed81ea69f7999e9d095509447. 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/AULI02561290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50c3e964484ba06df46756f70dd76599a3b67ccf62856398670a544554a5481b. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:21:04Z), 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/AULI02460370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee3149dd9559007d6795acc50584499b6acbbc687b0d8b3e10cf269ad327d64e. 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/AULI02461220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee3149dd9559007d6795acc50584499b6acbbc687b0d8b3e10cf269ad327d64e. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/AULI02461220.