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 0xb863a51eb58ea53364d97c24d9444f65f6c5385ca933516e215e3229b4eb903d. 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/5a48a08c-741b-4e88-8b06-eff382b3e438.json and https://artists.proofprofile.net/proofs/artist/5a48a08c-741b-4e88-8b06-eff382b3e438.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 0xb5816a0b3b7095233399e6eb37012ab9d8848b9570e900775f2b1c2b4ef09d1c. 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/QT3F32409749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9df2a9b69ca5458a1887f92eb46c595c0a3d50e85b856e4de70a9b33d7d78ab. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QT3F32409586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2c83aa400016442e7c8ddba8223e4e542e1dc1d5fc6a7fe735178f647e44fb1. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:37:44Z), 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/QT3F32407469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf01e8876150243d5856cb80aa306fc7fbd32918e6c664b49add6f544e7809c89. 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/QT3F32407472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44835c63900ad59e2344c8ea85d991c2186ac2e1cf3b8c522ac18ce0919023ed. 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/QT3F32411421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5aa5e2a0014cd185236bf2e4c58d70f1c5c4bb829d66162b2042e354a6c75ea3. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T02:03:45Z), 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/QT3F32409580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf642a76b022f489eff0052401a37e174b67d39ed5f29f95f4cb1925dc0a82bed. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/QT3F32409729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88449248fd4ac04ab3c28d7f227ff8f5621b7a24f821614fcda7714eee16c821. 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/QT3F32409634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x446c7b53abac124925cc37c60a556a9eeb3f6f1296343fd223472f79d78642c3. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T10:46:22Z), 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/QT3F32411394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x826fff40bd2fef7a2d4c81d0b0a97358f2737daf7105e271d7b86727b6c6b873. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/QT3F32411386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf98c70910200578cd24262cbd9b411e87566d251d53a54b935a1170dbbdf1b71. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/QT3F32409728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf367ebadca52916bc907d070128c873ef6b54c8956b0921f5270a280d769c2f4. 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/QT3F32409780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b863baaa9a33e798f7ec512ba8024b201490360a43d01dca269fff86ac7e70a. 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/QT3F32411443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0acd82693090df97f4cc51941e97e9aac1c879df10972816851f4214c1977e2. Chain 2 (Bitcoin): anchored in block 958116 (2026-07-15T10:07:34Z), 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/QT3F32411392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3be1afd870fd1ffba65990acd5b9705026dfb244f38766d39f7cd0bf6421549a. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:51:30Z), 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/QT3F32411395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56e10462440c8a35ceb403ff4fd077cc6ca6be0b544f233761117fc123a891e0. 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/QT3F32411464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8bfa9156b158cea1b6fe3b3051960508d0bb8c91bdd611615c7846d42d08129. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/QT3F32409727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb58b63307f3a01d421c903469fc565c6ea395766803799cf1a2e4ef9f82165dc. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QT3F32409772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb71582bdde18d8a3f9fffa87482ca8dc42a447d028de5835ec3f1ee30cc8961. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:43:34Z), 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/QT3F32409760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7410fd1773b9b2c270923b73932ed933f84d03ebff18c9dc0c46d66909fb2ead. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QT3F32407607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6401af3d02336973259719cfe278dfffff319ed9339d783d3dd73b8448be4334. 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/QT3F32411389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66e071cdb86e3023029f77b99dd0c76bef0173b0f7e77a6487c3a00bc93a63af. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/QT3F32407418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57ce77167e4b3520efa8904cad96c98399db30379676ff3d2435671e7453b723. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QT3F32407354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc75551c1b4f7842dfaf29c2ed2431e9331a5ba897e9fc643c2b0d6e59d4e8efd. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:45:36Z), 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/QT3F32411430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce100ea520bcf3370bccc38bf8bfe1af64ca70d0bd71bb48cd88f805414a23b7. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:16:53Z), 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/QT3F32405551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0847bb06cf0cb9c6207cc72a1e1f4d0c2c7df8bf3f5285046615426845ea25c. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T17:57:06Z), 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/QT3F32407473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccae9212e4361b5e870b0cfa36d136e0734a51a68addaee64e8673b44328777e. 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/QT3F32407498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc580a9d2f3ce0443e871721aff5669984127018716060c4eab38693a5e9e09f2. 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/QT3F32409783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x970cdddcf03417338f01b77db0b42451b8b49275f2edb8f0c38519c3eae99391. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QT3F42456615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4139417627de44c0ad1fe51dd21a5c5885fc0483b150bfdf9e8676ce098658a. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-17T04:06:39Z), 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/QZFYZ2534081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30763850e8240e5d5a28292ba74d0ae99d244460c5b94e5e1bb04e3019fdc303. 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/QZDA42536642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7508fd301e0c7c7622b6fb89f52e953701ef8a4d0ad33eb13e268c6ca093bb0e. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZDA82551887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaea409a988fd9d38f8f4380b6132ab64c5becb9f287b0d625caf31f760412361. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/QZWFW2521061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9635fc624aefe9c18083f72e124ad82d70f28df0b3fac61323a7b3d7ba62b41. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QT3EZ2533486.