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 0x10c62e0ae5a3fb55f6b9521e877c7c558a281710f3055436ccb1cf995a143db1. Chain 2 (Bitcoin): anchored in block 953842 (2026-06-15T22:22:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e796fa24-23c7-4a47-b3f7-2c7ba52175e2.json and https://artists.proofprofile.net/proofs/artist/e796fa24-23c7-4a47-b3f7-2c7ba52175e2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Barong Family presents: Latin Family, Vol. 2
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 0xb74c70a3c7a25997320453f6a5a4cfa75ccaece316b11076e30839089073f8fc. 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/USA2P2017921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65e8639fb18ab14b036c4ca3ed410c75b15efd275eacbfa8cbb4ed33cc630e89. 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/USA2P2017922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x130a51e815f580dac0c7f72e78420c073a82bcd935060d08a491ccdf81713047. 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/USA2P2017925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06f5d1b72cf9c161fe656332969438af0d458f3c9a0f1def3ad95c8dfdb41073. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/QZWV32441635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd877127ca373aa0425ced5b1a5a6842f584428b46ff27f2a0190c926f41fbcbb. 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/QZWDE2437091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67b98360a1d20b6a916fbc045206c59437f189675396f424d0c079d8429ebcc0. 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/COAF42490912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3a5688725a01c9a41dc4430f93e4e340131b510000cf0dd57a66154a33d76e4. 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/GBWUL2421846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa17ee99bf59ac46559884d93f5e3eafdc6a85bb79d27179f151173c54aa02ff. 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/QZMZ92421268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf8a9077cd4d2a59cad372b9b699523531d397d45eb4dc316a0cccf5d4062254. 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/QZMZ92421266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2285d5f6d9a67a6e49d58d4d7800744076b1c62bfeff2a43f319e0d284d4ccf. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/COAF42392507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88f1c866d01862fee6ef5976e07ace8d91a1bd2381aaac4dbc18520da52d8bda. 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/QZTRX2319457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa161d011ef8a383c49604d0cb527ac55ef531f16a152c6db9e55712bb97e4753. 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/GBRKQ2395176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04ae9063fa85e2f0f8c4303656d4eb544dc8cb2c1fadd722f7830888d9ed8a7d. 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/GBWUL2335640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38e8551e5b94a9c3650384cc6d0f85fb90a93260ced4e493a562a0c13e5aee63. 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/GBRKQ2394370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04ae9063fa85e2f0f8c4303656d4eb544dc8cb2c1fadd722f7830888d9ed8a7d. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GBWUL2335640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa161d011ef8a383c49604d0cb527ac55ef531f16a152c6db9e55712bb97e4753. 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/GBRKQ2395176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4eff2ac4de9aff5cbc9cd0dd8ee0da1055d9b27e2ab06203c257131f581a595. 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/QZHZ52208187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a3aaa297b82e023bea4dc3d641dca2d545be4ab94a8848458e1cae687e64c9c. 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/CA5KR2090935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70dd5eedf1d6927bd43d682562492c05bb285dd406c8902fa28434c025ea4652. 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/USA2P1914372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30080c33296dba12badd7c8a67eada16512eb8bb6cc8e56bf79118d9ff3880cc. 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/GBKQU1760959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb54149f22ec6b40b8d15a494df712f1c85ba91a2af024193133ba2e3a2be633. 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/USA2P1914377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a9b41c96b31e19ed3ad329dfcb7329cc0c8a8316c5ba3f420b23d52f33562c2. 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/USA2P1914379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22bd9422d19affd2504a854dbc269e7b2f926a60a877e647d3c92bf5a49fe145. 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/QM4TW2254554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf32f41d861f6c025aa2ffc018275349baa9905871395b6845b9ef48da5670e6. 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/USA2P1954874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c1377139117773664551cce292b80e343ba1f47f876fb06fb7de111486bc583. 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/USA2P1954877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a1a4309240d2f6fe5c9ff6bc749041e17097769cf6604b0c0c57f2a239f6d2c. 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/QZWV32541312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f5d05527a9bfe885e9539d195f9388b422c7e0ff54063aef1457a241235f3f3. 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/QZWDD2549936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb373cd65182a0990071fdb5ae292d1862e034d97164d8bb7c92fa48c43c4f20. 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/QZWDD2570081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc0c52ffc84176f449b2b27c2231bb5caf6318b59d9018d3840668059810d64e. 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/QZTV32546607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65cd69955d91de0ccccebc21dd881ae46016b8d170e0acf9ea9c319bf6cd4514. 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/QZTRX2565241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13862f4abbdf74d2acdfff4b50c93acb33cc95a442d34a0748f3d8f646bf8d1f. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/USLZJ2586518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ba2d833a67e0def548f130dc69ef3a8baf0d070cbb3b25806b0da642418c5d9. Chain 2 (Bitcoin): anchored in block 956859 (2026-07-06T01:42:12Z), 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/QZDQH2441341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae07d10b4aae1ab5bec1217ce0e5dabee5facfe0f6bcf23591b5995380625c66. 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/TCAGK2269482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x058832170f7d015df430025a0a559aa4f0e4a43d8fee7605e703d547f955cc12. Chain 2 (Bitcoin): anchored in block 957011 (2026-07-07T08:25:35Z), 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/QZTB92281468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6640a790ab1f39f19104f7fb634011686f385177b62ad7961f7ad16a82540d18. 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/QZFYY2397933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabed4f8b1d2b8889fab3d395ca7af43ac1c8ff889848f384e0c44f84ea3c62f2. 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/QZTB92294772.