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 0xe660aff53933a5fe28c6f04afc890303698d9c248e510b27275bc14e5a19f819. 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/b5b1ac3b-dd04-4068-8a2e-0e591d8dc445.json and https://artists.proofprofile.net/proofs/artist/b5b1ac3b-dd04-4068-8a2e-0e591d8dc445.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 0x28c7b1cd548cd53241d38fa8e1ebe7bf91c3df7f4bf1ff75e1f0e037ad59dc94. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/SE6HN2263438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5063dceb15918cb51d36a38eca7d818c076e912ef9d51f8d8be7567dc9cb4c5a. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/SE6HN2263440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa00df57fd82d2398cb9b62a72f69a74ec50e56453a1e92cd8a3b6e4b77a3a7eb. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T16:58:47Z), 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/SE6HN2263442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47150e4dc9406214f25a802cf0d1cd33fe893fca5c7d55470e00e0b7048df9f5. Chain 2 (Bitcoin): anchored in block 959065 (2026-07-21T22:00:50Z), 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/SE6HN2263444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44e91d7ec063fa60f24186ff762b8973cb0d4fbf5024c898b6549d116917f4bd. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/SE6HN2263446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ef04d1f556c6a032c015945e6509b97b0a0cc0e9753771868709dad587f71b0. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T17:58:34Z), 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/SE6HN2263447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb5e3a45ee7b9680f2c681c55da9f390a17f611e5ebbdbbde91d6b207df25454. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/SE6HN2263448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d981c3a7157647fe269fc258c9b6749f3d1b2f3a74d44dbd8f8ea6b9dcb2454. 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/SE6HN2263449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x553720ebd877f8a1256efc44752c51a73b361d1c196ac83e34088d6ff19c3e73. 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/SE6HN2263450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e564b1a4a8f559fd210b477e0904bc323aceb5da034eb4da7464e2e08384852. Chain 2 (Bitcoin): anchored in block 958992 (2026-07-21T12:50:36Z), 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/SE6HN2263451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0813a8f15e6cc7b118b7c1cc63b55bb5addb727dc17dc4798a0d84f18e80cbc4. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/SE6HN2263452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb443bdb766835150f822ba86cb77570609824d60ecc43a68a82475a3e6dc499c. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/SE6HN2263453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd529a1a7b427b3997392255063e74ff40f926657287a34e41e5961e2085f9c48. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/SE6HN2263454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31f882c94b54a167c3099774d742701ba5183138a7cb3ea4f54b0bb29130a55a. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/SE6HN2263455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc83eec8ccfb1c9fbd675df320cf8117eba25037544761d94cd2544c831fa52eb. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/SE6HN2263456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb932aab3201de4e90c2b9a01d96d3f2aeb633b3dfcbd9d335d9147bf6c451ea. 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/SE6HN2263457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4f994598a8934adf995f27870eed6930792d78bce3c96c03436e9cda3cd846e. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/SE6HN2237394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fceaabfb094b832bc99ab309cfd92e229e9cafe2058e5bae24585fcf75a28fc. 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/SE6HN2237395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3d8e56e8a03d55eb87aada4459bbfd3fbe600bdbfdfd28dfc0b2d79c984615d. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/SE6HN2237396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d1c27be266dc778f097cce294087667ddcd87780da3b7926c26e6a79c23c611. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/SE6HN2237397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x486719ecc57b033512ef21aa9fc026825dc503fd8b882cf496d7cc3eab0bd071. 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/SE6HN2237398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a3b2020ccd90ba22c24250b18e28db45d4dd1160fa57b269354140d4b06cfc6. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T16:04:12Z), 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/SE6HN2237399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0f15f8049df6892e207ce4b38cb54f6c0e51ba235c02e52eeb8a0d1bf0e0fed. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/SE6HN2237401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0c10abea83cb0f599fa3ec5135e3d47d468d29ab91eee655553ae37530661d0. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:44:17Z), 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/SE6HN2237403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5fd3ced22c1b056f4fa2965f727f415ad59144795444bcc29e2ea5dea1a6499. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:32:48Z), 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/ITDXG1911401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8c989eb2e6e4d565bb0dbb20ec5e2514902cf684e3c194eae182d0d853a4543. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T01:56:25Z), 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/ITDXG1911701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a8e135668cf0cfce33b1af058fe61d2649c1185c4c58b711b1a1d9e694427a6. 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/ITDXG1911801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x952bf944d888075e5a5dc208bbcb8946037dd6be0e339a2c5d94367ae4659b2e. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/ITDXG1911901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bfd978b6dee72be8eaaee4eee381fb8ba33d78b06c77308e25417a9eba3acd9. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T10:04:40Z), 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/ITDXG1912001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ca413f645e404b316e87333807524ac4174a48a2d036b1655199bf046dcd9c4. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/ITDXG1912101.