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 0x19c91b9937842ac92271131ab6d7623638bf26b676656c31d7eeb4aff580a0b0. 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/cc67305e-0fcc-4b21-868a-b058269277c7.json and https://artists.proofprofile.net/proofs/artist/cc67305e-0fcc-4b21-868a-b058269277c7.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 0x1d8a5951420497be7782889c734dcaeba66437c5c349960cd30c9f2fd9ae8386. Chain 2 (Bitcoin): anchored in block 957573 (2026-07-11T13:43:13Z), 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/SEWJH1000203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14ca454d446b9652f0168664aa3a583a69592295d8b9a1b076e7b9968fff3fe6. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T06:55:51Z), 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/SEWJH1000204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb85f1e220d2daf73363cc22080844172429b7478e81014e3fcec1614a9ed9fb. Chain 2 (Bitcoin): anchored in block 959091 (2026-07-22T05:21:43Z), 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/SEWJH1000205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0888a82e0b3ec2e82373a08db400b771d9682b5628a478303638a70f05bc7d0. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/USHM21906497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a55e94dfb1342a0fa3ce38cf0d0034341f65fda0276cf5f372a116d4da8236f. 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/USHM21893736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5860deb8a7d59f4f65ea69e5e712758de683159a04633156c8fe536c192ddd4. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T02:09:28Z), 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/USHM21893737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff908e88d0b4270aa41e0ba7b6f8023bd96c083c17aaa2fcab2a468ebf996abf. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/USL4Q1982643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc45d6cb32b311641112e7ae9c48c0f6119fd41d706ad63d55c3696c59a74bf8c. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/CAGOO2037302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02e0f39406934635e6faa84fef29781b9138e979bde08f95ba8c7b414a7e6514. Chain 2 (Bitcoin): anchored in block 959096 (2026-07-22T03:48:36Z), 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/USCGH2211365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffc41e026bf97451d6ac332c5898de40c58067f3b9a549fcfd3c9f8e02d9f8b0. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/CAHQJ2101235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0b2d8db4de7847ae72ee2d7799d5f4a19ba22f23b7a833d23947ca5e682a643. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/USCGJ2200135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21f710f1e42fb115dd12767ce7a6c57e7440ec5866cdf83ab92a6535c5ed5d9c. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T18:45:13Z), 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/USDY42202754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0dcf86e22476f193e12814617954e9c2c1644d31e2caac242eb2582ddfb7e16. 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/USDY42300983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef960a50dabeb1febfc48907a16dcebe1eb033d9bf648f0affa944ca3017a77c. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/USX9P2344799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07a10857b5726adf56a2e3daa0c218efe82a1a34cf01c824eed1d92470ad7daf. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T17:10:27Z), 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/DEMK91300477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bae2d6e7c0f670b62f5dd509256c6f9348fa71d6dd5864de89cf1ecd157eb54. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/DEMK91300478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x261d95cb6ab0bec94bd7b2312b6093277897df83e98184e000bdafcff5d62af9. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/DEMK91300481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaf861cc35e24774f3aab6486910a2e9c08176a4d4323ba8b922ca38a9ded874. 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/USX9P2489864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13c348c895841ea634948f7b91fbd1f2940538b3f077cc9b3edfdc382c87e3f0. Chain 2 (Bitcoin): anchored in block 959096 (2026-07-22T03:48:36Z), 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/USL4Q2236062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0dcf86e22476f193e12814617954e9c2c1644d31e2caac242eb2582ddfb7e16. 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/USDY42300983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e38927b46ac6951ed6e37108f8aca3ba2cf67f9ab4142aeb11845a7df110a50. Chain 2 (Bitcoin): anchored in block 959089 (2026-07-22T04:56:22Z), 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/USCGH2321215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ee2aa5964a48fded26fbcd7086ff44d76797cd6bdcc7dd3ef69c06deca9b27f. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZGLM2548100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaf861cc35e24774f3aab6486910a2e9c08176a4d4323ba8b922ca38a9ded874. 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/USX9P2489864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13c348c895841ea634948f7b91fbd1f2940538b3f077cc9b3edfdc382c87e3f0. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/USL4Q2236062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e38927b46ac6951ed6e37108f8aca3ba2cf67f9ab4142aeb11845a7df110a50. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/USCGH2321215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13db8c1d4fe40cf260d4b407b5e34a2f3170b6047d591d2c856923f2290a1fe3. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:55:46Z), 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/USDY42472735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c61ac7b027bc4a55cb89ad34488541db9f7f1b4b260b345ba5db94af90d80c9. Chain 2 (Bitcoin): anchored in block 957573 (2026-07-11T13:43:13Z), 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/USHM82364540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebdf4811a360371ec60b30c0307d4d384ef97b49974b1f9130b7ac9ff36150e1. Chain 2 (Bitcoin): anchored in block 957576 (2026-07-11T14:19:48Z), 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/QZGLM2548101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4034ab4d992f29c320539a87162ec8a028f89ddcf1c7e8df58d4e3ece3fcc2dd. 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/USHM22468469.