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 0xc30282782f6e4b45fc302b654238dd1eea2ae22152be3d39439bc7ede3ff7b4f. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7cbf0547-da5c-4429-8f21-6b46482acff6.json and https://artists.proofprofile.net/proofs/artist/7cbf0547-da5c-4429-8f21-6b46482acff6.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 0xfdaf1f8bd50cd00341dd0a5fd1bfc2ed4d986b87e16490f8330557b235840fc1. 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/US24E0410134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4eda03f8674599d16d6dcf12e1930cc63e067f748f7c3a27fe226583c0955b87. 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/US24E0410135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa91c16e8902c923a603026383bb47b13172afa6b50049da2281e3ecf6180bbef. 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/US24E0410136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5011eb9837f85bcbcd323d7195a458705a679f045d4761c5eb4b768d4787d82d. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T02:17:45Z), 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/US24E0410137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0875626172007c50036e57d2465a2f03f8de7681907196a845c1633f24b8655. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T05:11:21Z), 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/US24E0410138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a932b432847ad30353e15f6012b5409b390e79eeb9ac6d2044b4328e958bb18. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T15:50:21Z), 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/US24E0410139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbb3b5e0e7f0ade5e152129b431224a8aab7741a255f77e4559e67c22b0e8adf. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T02:25:22Z), 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/US24E0410140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x303ca7700a4fa841df83214bdc4da567615f710032f0829bb91dfa8a43d08714. 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/US24E0410141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13bd576523d55769fa0504a3b686b9731a6edd2103e29652302f76288a8fc00a. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/TCACH1557605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f0b98d79e48b5228d7981c435c712dd65fee6121787820a884cac14c6d07605. 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/TCACH1557608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39b789c1192d8184e705dad62b76686d22d8767cd3f696c72123037daa85e06d. 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/TCACH1557610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x262971b6162193176de707d9205892180ecb36850c1fb11ea3b9c17030e8b816. Chain 2 (Bitcoin): anchored in block 958988 (2026-07-21T11:34:36Z), 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/TCACH1557611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3e5cc83075146df7b9f976c5daaa0d2a3f3363f206cce95f94319c60969f5b1. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T11:03:14Z), 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/US24E0410017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadcd2ffefe42455cb898141e16680c000756675015150eac5bf04965ab5e96db. 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/US24E0410018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf82e5d3bdd362bbb76d33896c1811ed70d9c168515db6dc44cb7a2ac9f1e24c. 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/US24E0410019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x757e964bc3ae632006f862fc39e66ee956fd383056d98f136138e99cc13f15f6. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:35:57Z), 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/US24E0410020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacbcfb9925bbb43949b01d3ea19f45c8ab10c3b87af10f54c30bb06f5fed102f. 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/US24E0410021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41ae7349bf5d9f599ee8d0c7e759eefd24e96a6e66138e817230613f549f8c38. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T17:46:51Z), 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/US24E0410022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x645c2165aa7c5131e7f62d07ee61600a4f52ce5089e1966efbdceaca70484560. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/US24E0410023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8fd8a50417d7e88ba5df107aed2fd2e69bef76ea9193a5ea3751a1c1c649346. 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/TCAER2063673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09a5be7f61682c8035aa6edbac2d8a5c41d3663be428d4423f74109bb13ea73c. 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/TCAER2063687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00f0ffe2ce2e1f12ed17684c9fa19d4fdc0fd70a74930425aa3e7706a43d718f. 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/TCAER2063689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14600663de0bb4b3d551ba4fcedd5477a1c2cb01db2b9909fc628b38643be2df. 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/QM6N22562622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x760f1d8917a9fabbf5c04c23aa2f24a3f6cf842cf9cec5966ac81e84837d90ad. 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/QM6N22562620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf37205e1f1fa72324a696d5e71dc4d10de26567112a4db74df9ccf7ff7b5626d. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/QM6N22562619.