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 0xf1d7d0dd41bd0beaa2c261898c4fa6cac657d1116d072c26609ab74ab6bdedfd. 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/2ac81be4-129c-4b6e-b604-967094b2befc.json and https://artists.proofprofile.net/proofs/artist/2ac81be4-129c-4b6e-b604-967094b2befc.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 0xb4dcc96609de0fe4efbe1fc3bcbd709d75869818c7100225896c37501db76ba5. 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/GX5MX2415572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd5e22e2c00cf538e3a828f50d941d86427a64cbbb9ef6686f50655c9eb13cd6. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/GX5MX2401543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf612270511869916bd2521043965efb7d76754f2a7df0a74e8ca0d75f8d1ed6. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/GX5MX2426978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc457198c63af778020c8cb3020203fd6ec9026ab4f8e3eeafd2abda70799ad93. 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/GX5MX2407987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6fa3fb35f490809e9204c98a3d4b0d7dcb37d3e015f10176086265b2134a37b. 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/GX5MX2418915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab71ee7fbe70860e505807a55fb2bb991ccac3a5191cfda8b1bb413ca073752b. 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/GX5MX2496022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacd79922e12a2f0c15c3612ad7d5c0f6c340bc883ee4c9ccba9ad3672d4529c8. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T11:09:09Z), 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/GX5MX2490956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1315b9c20cc1cd6d70c5f4383fbb950f6a21bd6ee11f6ef3436e07e05be39b22. 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/GX5MX2419542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f0fbae4b8b4bbedca79ec6d89febe70d6c7440bd353473f624dea6a8f7e56fb. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T04:49:30Z), 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/GX5MX2455566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80c7e3f9dc3e1471949df239ccae426be96ebb44f52a02e03d5ae1993d16f420. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/GX5MX2474151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf12f49c9aca7ce042a5aef2c2d53b8fb902e16cb3b0b69a4f629fe526bbea8a3. 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/GX5MX2412063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99f47757ccf63df342785e9bc8eb8ef0c2f5db78b42f5342f0cc5bb4e550163d. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/GX5MX2457789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7710bcfec21320d2c58dedb573f3d24d1d9ccdb4a4bd133870ea019b075a4d54. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/GX5MX2410784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f185f88d14a6afe5e549b18c10889814b4d0217fc9d1e598d77a1f69cfbb426. 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/GX5MX2418705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a57d2a2e095cea2a0d86663a2bd0b2d72a77d167f5027dd764c71c3c8ca9bfe. 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/GX8LE2538555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76ac02014b56ae7ba705e70fea15a841e6ba9c0876dc352795819c7e719bef97. 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/GX8LE2557453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ad7a63352d355f1588e8c07369d9474ee58f7a9e3be923e5ebd12646b289f3d. 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/GX8LE2518066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3154c7c4997d8d28dd64477f3ca23c8582b2681923796d327b03b434406c892a. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/GX8LE2549027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98db734292cac61647763b999b8aabf1219a0e2bba20804a1a69fbc7d572421b. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T17:33:17Z), 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/GX8LE2584251.