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 0x56d6ef948514f04f090e996cbd05c7e2727c1017143b8918f3d7cbdd57286cf2. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e8045909-3f9c-4f8e-932a-db2b1276150b.json and https://artists.proofprofile.net/proofs/artist/e8045909-3f9c-4f8e-932a-db2b1276150b.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 0x33e8bbfce317981232a3a3b5b805352d8848452700ac20cff04017878d4282b0. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/QZNWQ2260470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe81dccb09897b840ec0d5ee1130f29dfac512e50a8a1467bbe177a82293d452e. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T23:31:18Z), 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/QZNWQ2260471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ea7d46b6fe8256c0d7d6bd0b65cb3036209cf8b85864aa5fe5afd3f29e0db02. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T23:09:08Z), 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/QZHNC2246481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a8460dd9bde6dae34479f2e6cd567105a7daed96926f38ea1687b21d4364f4b. 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/QZRP42209294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fb989b08890c0dbbf9c0b11157aea99785a08b55649af2fec599d9b6e72c30e. Chain 2 (Bitcoin): anchored in block 958422 (2026-07-17T13:35:31Z), 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/QZRP42209295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b0995eb1c50ed73667e249835217e7817037ef702d570642acb7b734a390d7b. 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/QZTAU2228128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33be7ee4eb6d35dc8bec73a6ac933a2f01374a90cf556569554ef2f4efa4ecc7. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/QZFZ62318930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd75b13d72572b45ae576bf08c9dad5602fdafa3b159741370f2bc6f406fd2685. 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/QZHNA2376103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x246c4b52d8e117f29f717a18ed65686d5646e36d424f640aff8bbd5540c14495. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-19T23:44:16Z), 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/QZNWX2426671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4c177b71b9e18f826347546adcdb9a8438c3436447d622324fe4b37c5638bb4. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:20:30Z), 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/QZNWV2359056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa345a71fa5ad95946b0cfd728f8042177cbb1588279613f1f8885787e829dd1a. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/QZTAT2355691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2d0189489256b2600f4671ad3515822d988620bd4af955ca28426cfe8fc2bac. Chain 2 (Bitcoin): anchored in block 958722 (2026-07-19T11:03:50Z), 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/QZTBD2386311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb35c2f22b3db58544b9daac43ceec35abc0b0c68dd3649c4708233bb74f3215. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:54:18Z), 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/QZFZ22407642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa5111b6fcf3249edf06be0c864a54ca8c9c9a06c353c0e3385d9887c83adea6. 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/QZES82450029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9d01c281bedf9eb326a1b728b4c79f61b19bcfc3be082fe1be76e91945315e9. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-19T23:50:18Z), 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/QZES82450032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7997cb2e628f318f90e2aeca6d72910ff6f0aa07a69f7af7408b289b7d9ff16c. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/QZES82450035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44abe46d7fb79f1e675a0795830c141b2cd53687ebad8957cd4d6539c9f8c83f. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T04:58:45Z), 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/QZES82450037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7db1629766f3d49b5451a027a89f5e1f00a24652980c277d145904e685c3a00. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/QZMEN2401105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x309c1e1e4a8b3debf63bb5647f0a69b9e89360778c7a3f7edc0499d7119b0a42. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T23:07:42Z), 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/QZMEN2401106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c6c831e3a6c252c1c42e358c42c13f2f20c7a890e29e85faef31f97155394c8. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZMEN2401107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f9dd7e07b7e21c77f08d1f3611f98fa61418f27f7537731ca7767fe7d5db4ce. 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/QZMEN2401109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xded8f59dac76ea75e4b283927eef20ccc26f4263240ae6fabe405ef79f9b578a. 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/QZQAY2430047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa799bfc102d208d11f30280cf385de6229a5c2c3d8282f218a1f631298ff40a5. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/QZS7J2404876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc70392fa8d9c11f892403a4cc9a8ec537a99766689144be0aed14545acb241d2. 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/QZS7J2475405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56fe57abb4a8f995a89bae1cb4bddcd053d0dbaa50c1caf7f9432d311b2821eb. 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/QZS7J2451663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x343bedfe8d8310b44a7d4da68776b7f1800571a905bb54c0d31a95d5c8aae12e. 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/QZS7J2408221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef4cec63885592fbe59f7bf1851f87da1a790cc6822af6eb8f1f8332e74128a0. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZS7J2457164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46a2de512fcb45444e7efb215cbeed4fad872573a4f8d5e25ae261e8841ebe07. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:38:25Z), 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/QZS7J2546302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa30092f6c0abd62cbe3e3becca0ee4a92863950d73ffc75f329471aad79806a1. 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/QZS7J2566582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08d4cd3e4da612ec82959c6a59012e525c510fef6443f7ad46d984ddc09463ef. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QZS7J2530536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dfe57b08e0cd4b9d9480cd478868deb4dc223cf86ede8bef15f55ce3a7f5da5. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZS7J2596029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27f201ace7b6107bf22f75615353918ba479a2bd4bcb078a0177e869d546e68c. 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/QZS7J2511033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5160258f466e82e5ede2336f26a75509d560bda2b98a8080b7cb18a3f92e50b2. 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/QZS7J2519816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x798d4819f19e9de80ee2d54cfb3a394a2d6478e4d97aca52f42ef51d6d52c4f8. 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/QZS7J2535016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88c265702ea79b808924e8e573d5bfc76751e2b5699f08bc97093e2b4a97b096. Chain 2 (Bitcoin): anchored in block 958830 (2026-07-20T08:20:39Z), 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/QZS7J2556471.