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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x369f87f031547e21b6a790e37972638b403f8ab6c7d44cdc1591139f85b71dfd. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b215e727-519e-4ac0-9798-25f3e4596615.json and https://artists.proofprofile.net/proofs/artist/b215e727-519e-4ac0-9798-25f3e4596615.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95eb07f5e2b029eb8862c71efd22cf38943eec4b61133d49bf949600cf2576c4. 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/QZHN92453568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa230c7242b0f0af3f2ea6d943fbca15f511ba0fa44c4532bb6133015b79600f. 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/USHM81348595.
Grace and Love (feat. Todd of Z4L, Dwayne Reed & Decipha)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0dd9b46a38f1d6fc6b4bb1b70822dae733aa59f99ca2832863aac9052b71b01. 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/USCGH1539420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7ca17b712531b77b988bb9af2cd4145d609a13fbacd160db564fbe48616b851. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/USCGJ2344553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe1d90e917c9db9e82b1ea32547ec70e14ffb272dbb13d3578f921a27f6b47c6. 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/USHM21569333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x568898f5cfa5c16bba72f031357f8507550959ef6fbee20310156a60103c13a6. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/QZWFG2471146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x572e8677dd82abda474bc7327862d10b47bc319d4d183f85a04e062f8ccd373f. 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/UST2Y1200040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1587b9ef4845d9e1e6c99cbb70c54fac6ef698b64fc4d7c19e5ce04a5191cf4a. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/UST2Y1200041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa34ccef54822bb74dda8b13e26af3f544af978b4876a9ac8ffeecaaebf2226b9. 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/UST2Y1200045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3291dc98986e672c8e557a66dac614e7bbb8f415294e1e2751bd7dbd552e0e85. 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/UST2Y1200049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x890bb23611d8a1816de0b28b9ebe62e58bbb1d514dbbc43e0c0efbf5ad3bef38. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/UST2Y1200013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d0f020bf56158c895c6dbd6561c0aa8a1b3f90355690bb4545af6861828435f. 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/USACX2100693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f61a007b09b48a4552e90bd4e3979c5137cebc61092364e444047262546f23a. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/USACX2100503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x132e533a3ed87bf07dc8984a72ad0868798b60cc9004e465141f35fd845b0ac7. 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/USACX2200200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbcddef85357f3edf34a49748df366c84c03ccadee954806080237a61f83eae6. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/USACX2200201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddf1443e6afea31fee631e4e0c7c1b15ea3f8e0139c2057d724766d094b492cb. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/USACX2200202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x014d901fdefdabafdfd4b5eecba8729acb46ed75c971b99e36d0302a0b406079. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/USACX2200015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4d58ab15b80825c40f71ba6b830e5d58bffcffc3e74c723b440811a71063fa7. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/USACX2100780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26b94a738c9d7ffe24761c0c6f5e21d73fbf1d44d601a5984a0e77dcb09ee194. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/TCABO1388600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03aad57b68eceff7baece60e890b2f09d760deb032a3c686a860fcf70b1b7e1b. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/TCABO1388602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40665e819c23567c76b3eb98504857b239e3901c4cde8544cb98dec8099acdad. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/TCABO1388628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c3467550d84c90801374358b142c67ee72afb2a601c2e1210a2e06b4f248251. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/TCABO1388632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5eb59d90b04f2eef79dff79edd6d46ce3f5a42dcd8ba79fb9afdaeb3f48c33b. 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/TCABO1388638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65f79a3839f88813ed5829f24862a2bab98f0ad0a43417c8c095c54ee2889963. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T16:43:41Z), 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/USHM22228414.