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 0xe265f6a452ceb59c24b066730a8d6b2a3a9f66c338155e8ab5e2eaa0cbe37719. Chain 2 (Bitcoin): anchored in block 953717 (2026-06-15T01:05:33Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/881a8478-a249-4693-878f-013207ad614c.json and https://artists.proofprofile.net/proofs/artist/881a8478-a249-4693-878f-013207ad614c.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 0xc17f1f07ecd5c715c99b9cdbc55a71cb177ece146326b4982c9c72f558e45eeb. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T05:45:43Z), 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/QZFZ42580448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaebe888d2cfc1601af017944bbacbc4a7cafe549b4511f2af6e127a5055373a9. 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/QZFZ42580449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59cfe6cf120cad21652ec61f36151c20e370055e7bbb7936a017ed53f3584416. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/QZFZ42580450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x510a79eb49bae7683b678f637ee1bd6b2c5fa09d011a879a2c00bfe809dfcc46. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZFZ42580451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f25167d4989b63e978aa0db7078effca1bdf399247118c7b1b67480d23aa83b. 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/QZFZ42580452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x279aea6108932510e8d42c49fc5969d53f486c2b8502a9f7678ec99687476b19. 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/QZFZ42580453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x069ce073ac4e1884f5df802aac85973ac1ce4f3b90261c1a98ec2acac1ae5cd8. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/QZFZ42580454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0df50982e626a04fa0b21dd91e5f73993eb2cbeada4da08082db838e80e187c. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/QZFZ42580455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe64b76d4dda55770fdccf2a357be8f51b14b3f34f9f190597d0b7ea5023bb01a. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/QZFZ42580456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c2cfa02e14465d33451b13434d5cc94d92796ade214b6f6648edfa4fa56ffe1. 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/QZFZ42580457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5371c60837855a5b65e22ac51310b7a02206c7fcdeb65fb7dd8554953d221588. 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/QZFZ42580458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x881ef457b226f28a34d6c1ed75d69d76738b05eae2a51d793553489d6320bc21. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/QZFZ42580459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x220ae675db52fc5ddbc34537927880d93f1285f29e3847640359dee25a5921c2. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/QZFZ42580461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe35fb0aa8143761fcf4e38a814a4a0b9bb0970f849071812b0fb4b30f144fe5. 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/QZFZ42580463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x818690e1af033029557e4435b41966158ff711a667d87274d76f238d4fc6a581. 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/QZFZ42580465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48321ab5a5b50fc073aa90c5753cc60253b948106e586d55a53fb16ffd835918. 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/QZFZ42580467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x480ef3dfc2a0e25d15458c5cb4c4d58bc46106582d9d70352977b3a70c3e5369. 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/QZFZ42580468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd461b0da65cd4891ec6cb762bee3b9d97f251f3393fac654d464f37a7a4ca7b. 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/QZFZ42580470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4101950a6fe08a12e69c3321e5fc38e07b66bfa209f64902f52072610b33bb9c. 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/QZFZ42580471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c9a75408e2c04fde7fbfef46e4c7341520ae981d19cb1103151cd136f037613. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/QZFZ42580473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7efd7c38b6504c9d172a062e573acf159840a8cfdce80ae52579872ca67295f8. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZFZ42580474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43f63b2ae8c2ec90feeab8bfb7fc059f20364280b7463623eee87d02bbda1057. 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/QZFZ42580476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b9dab7177467600847488ff296224cd6bf76452c8dbd234f093609b4b45fd39. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZFZ42580477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb890ae69c305a3b434dfc65bc0e453b64c31ad6a07e97366e161cc66817a8322. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-19T23:34:40Z), 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/QZFZ42580479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25466b70d58b10743e66ea55c86987a4e04ef447f36e3f7bc48cca6e19b6203e. Chain 2 (Bitcoin): anchored in block 958587 (2026-07-18T17:06:26Z), 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/QZFZ42580480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6768ba2c4736c32c0504758eed9049b67eaf0c2d372099f60c3e44afa216adb. 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/QZFZ42580482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e70c49b053afa6bdd036ede73f21bd302673d99e405cb0fa1f98e388d0786dc. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/QZFZ42580483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x939b79af97d21f1333ce240057604494abd91fbf93a3128aa64d93e47eb271c0. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/QZFZ42580485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9966fd497849392e9dcd2f6c1b8b72428f97e38c4d6b41ecd6dcf5fc8aaa5b12. 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/QZFZ42580486.