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 0x9e80c0fa2e657b22b8881af8c932b26e1919e9b8ed79f6de07272854bd96c542. 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/a3a67527-b8aa-4312-bcbc-aa994a5cd2b3.json and https://artists.proofprofile.net/proofs/artist/a3a67527-b8aa-4312-bcbc-aa994a5cd2b3.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 0x8a077daf6e79848b10d5282564ad620bd044f43b60eada05d7ed577fbac32426. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/USCJ81200828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ec46c642ea1278f4c1ee1119992eacdef0ac9ebd061e5d28c75b51fd3984e30. 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/USCJ81100803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe088c8e948552f10ebc9c9781829e0a542c7e07745207e8a16bf9f0b2296cbed. 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/USCJ81100791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea6bd20c7e441f905c6a8aaec39bafebe450d6bd88160b6e23881b09f7db6f6d. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T09:35:10Z), 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/USCJ81100762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd86bce02543cf0385a17eada8587fc87327f9c5c4056d62278edc3786cc4f2ba. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/USCJ81100728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06442c0fe7908a5c3bd1dd8b61975670b107a4fb8a574e2b09a38a7efbaafc0b. 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/USCJ81100793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43b4fafe4d3b820e411ed24bf2a0f75e6217d95c6c48d123ab8f9041355d943a. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T15:20:35Z), 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/USCJ81100794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x410745700a2e0c8597d52ce320d4a16b6c1c546531c3ec0b6afaa68f39d45f9d. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/USCJ81100795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d530b00d8e6440809908df6e7e65ccd74ec999308b2f3f9bf60a09e77ab6ab5. 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/USCJ81301172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80d1f21adb809014f6257cfe0710478de381b8ae6da2a4a642bf43f2396c2b03. 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/USCJ81301174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37e6b1c4ec733cd5e53f08b2e05f808f89468037cfbe408b1e35bf0657f7267c. 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/USCJ81301175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6a63d7681507c2755648460241aa708655d835f991adc8c585d7d3fec47ba46. 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/USCJ81301177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda7c9cc4c89a2dad2652bdefc0b3d14843c72d59fe07c231153866f16754fcad. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-19T22:59:45Z), 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/USCJ81301178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x046aff69ea8fb6eaf72394f1239cd493b017570683f18f4c049788cfd4ee93c8. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:40:56Z), 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/USCJ81301179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6355e828510b1cf7e98474d85d7970d593e511ef46f2b7f272e988ab00045e2. Chain 2 (Bitcoin): anchored in block 957763 (2026-07-12T22:01:25Z), 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/USCJ81301181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3d27a057428cb541ffd0ed083ffcd7b4b8cc983dd8070b647604f31f93e7a4b. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:05:23Z), 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/USCJ81301182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x241f1d9b4509f56d69ae1035029a84c7272322fe1a411cfb2b857f0a61775c48. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T17:31:34Z), 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/USCJ81301183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d7d59dc7e76c836ae96820db2610b0c0ff1247088c762eec9ae9a1ee337a2bf. 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/USCJ81301173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb5cfb181fb4ca42a4c5bc40f22d98f54820db8931943e4820eae6d74d37b63c. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/GBKPL1802929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e317ca5c4d037c1cf58956dcd9a5a7cccc1a5a7b1442f5650f057b48ba40c9f. 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/GBKPL1802931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8acaeec5dc4dbf423725fd95e804cd5131c1cbc9774c19d5ba1c70fa0ad89d7f. 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/GBKPL1802935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f3efa22cf29abe8c8fa73bde8b112e7dd31f6ea8786595b284481ff173fd199. 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/GBKPL1832982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf321e46c8c376f42b96aaa6a7be869f008394a8e43265aa61e2cfec98ee75510. 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/US6680916194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24edc2784857a6c5e74f47e9eff1e2a047e73751b29ce7c49b77faac55dccd50. 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/US6680916196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x877bd09bee5d51c3d06a514e93028461d9ff3e1c9b77af51ea68f0c5c998d2c2. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/US6680916197.