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 0xc587597c7d42e8e0b0623769f2195a49152784dec2e2ef189aac0cb409508226. 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/7ef96a79-297b-47e2-875b-44bad89eaea1.json and https://artists.proofprofile.net/proofs/artist/7ef96a79-297b-47e2-875b-44bad89eaea1.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 0x31f7e7cd60f02aff4528777cb4b7a3e5d7305b5e2845d0ae07de53faa5c9e975. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DGA092313432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b2acb71304c6b8112ed192f07a37b0a12ae95c1ac7e307837567f972173ee1a. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DGA092313433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89d73fbf1990a4aabd189bec7ba7d549ffa6d572cde1242fe67e2a688a037bc9. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DGA092313434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc435153ea13317f32a7fcdd4bd7a3680ab2592105eb3dccd5f54c4a3098f6b50. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DGA092313436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0779d2d286de485386bf2b88b2b3ac9fb944264ce18634cd49cdb2a0c7d94db7. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DGA092313437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa37f8683e7997e29c7de2e0c0981ef6c1c3cf581f3fde1c9f02fe3ee4a3047cf. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DGA092313438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x882ed9e000af62e0dadfdfc08de48ad85b8ee4bdb7af05528c5f0f0767cee775. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DGA082332135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x828f4cfd2f6a1b012f9e64a0879a8e05e12e0cac198b2e19238e572ab2d2e014. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/TR7801600554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6819ab117e3c018b2b2e9eb1b7d355705a6b2e423756bd2b9e090e74931d2fa. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/TR7801600555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd327e7c6089d1ef5a5cec4d884e646917b9b30153d3f379839783661ac2fddc. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/TR7801600557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b58a24beff6409d0eb2b02ddc47a3c326b794683d9c4a37d169f8fe36532e73. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/TR7801600558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a458d9c1d0905bbb5a6d9a1710244dca97545587c1e5f777c5a889e9f946d8a. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/TR7801600560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9df57cce11b58d518b02dee138d5ad10f08d55999cf98dd37f09707aab35bb96. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/TR2641000024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca903d10e2126f866d61983d73ac8113026f2926feea886d011c48cf6d8a7931. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/TR2641000025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71e2606d4898080c3aa54085534d1052a1afe6e6e09d21a7413fd8b9f91ceab4. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/TR2641000026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x566e832a75c49bf5dc7af22b6fca66b9edf0bbacd4ef794af63b8bebf6795496. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/TR2641000027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ec7a13a08931b537f972626cc7691cfa138546769c91ab14d832618f1d0b7c4. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/TR2641000030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3166bf9fec604d928d7c937ed185f8fadf6be7cbca5e2d37a9b07f258500f439. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-16T14:06:12Z), 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/TR2641000031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4eec92931e464402ccef9ae7166b7b12152126d54cbeeda315862fe6049f9b9a. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/TR0532415794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab4cde76d6963a4823f14c343218a62e13abe0c144e047947e7df71d87174fed. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/TR0532415727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x060797e2eeb3435bd40b3a2975b9b4821326c814a4f598bd47c9614068b51f1c. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DGA0M2369158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0d17acd9aa6a0b5b23e12ca01dea0783e00cc0df03dfd0c8bb0c79d96533ecf. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QM6N22389662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e38f341af09323362f98d5cc8c7030e0e81ba896691c73b823cd1f0e3a634c3. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/TRAHZ2200069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc30ae23dca1e83b4f5f1fe7512c3e44c1045f3ca10fa2de9b9157edea5b49655. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/TRAHZ2300125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ab6115f01346d684eea9ac52819f295bc448d1a53d16479e50041ab29d7d736. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/TRAHZ2300090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e38f341af09323362f98d5cc8c7030e0e81ba896691c73b823cd1f0e3a634c3. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/TRAHZ2200069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8d52ba0692389ecdf4f354ee65bcdd626fcf7f6000a0018c89107adda4ccbf9. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/TRAHZ2000113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5e85586d523a5b6f1228b48bb021776b07b404022206fc7df935717c237f6e4. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/TRAHZ2000057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dab345cfc6aac3d8905ae25b034634a968fc24f2437a0e218438f4335363c96. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/TRAHZ2000027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6205b4f434d5efed903f69969e129fe0ff798059fa69583ecef3b298b7b902b1. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/TR7801800211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90eb526acdde6404bac2a2a0c967b1230afe04287f053791b73518ccf8ef84d8. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/TR7801800089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf880934e59af933a73ad86373aaf7dd39abaed004ecb9e6224508a2f0a222dd6. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/TR0391400037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf880934e59af933a73ad86373aaf7dd39abaed004ecb9e6224508a2f0a222dd6. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/TR0391400037.