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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 0xae261712b86b8474a356655fb6f2babbc3d91c11d0261a7dd4f33cf2d0e38d42. 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/d6c4b2c5-1bcc-47e3-b161-d24cde937e31.json and https://artists.proofprofile.net/proofs/artist/d6c4b2c5-1bcc-47e3-b161-d24cde937e31.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 0x018831a189e797c114ae49663c262a6a8e1a6d99b38321bed4dd0d37edaed9ba. 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/USEE10001543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd16d62d6262ff3261b3d46968392e45d47f99f088c533b5f4442073cdfc16ac. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T10:05:23Z), 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/USEE10001548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa29f96f7eaa94f8dcd9fd36dbb1930eed71306f892e233896f112fb363acc498. 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/USEE10001549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6676da5aff7d777ecae26006fe7ff0bdf36cd865e3e4d8c13fe3f7fcc5800979. 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/USEE10001550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d7c2ff583b65710d41a81768b0f774274113fd73a43d5bb8c062636a74156f5. 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/USEE10001551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc48f2f054e66b4a9c72e2dae68646068d51757f3d195d8887cdf1fa7f7f80450. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T10:09:30Z), 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/USEE10100383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5f4a6f214968c2a89b06806d3318f90dd3da453ab27b86873985f7f4de07ec9. 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/USEE10100385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29dee7e7349482f78bedc4597c47e1fe978bb05b7e0cb7a845de3f638f5333cc. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/USEE10100233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d638b31e6da7d4843f2761f13c3916d819c6c976f0480ca7441338d4b207971. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/USEE10100235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7eaaf55e5a1b31c67df3e72a8d50386f2f1a43e3b9c139a3770f6354f498cddc. 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/USEE10100240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x752a77185ada201516be91357d4e3628a41a277c15189a6e5b4b0d8fd85be1eb. 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/USA370675280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed755d1cb4ed556e3db8b59f7a6cdd7807611d0e16ff761b715a30c5a231e6b6. Chain 2 (Bitcoin): anchored in block 958473 (2026-07-18T00:52:36Z), 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/USA370675281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01fdfb932d1ff3cf7cb9d7927dd9c61d3e6e7ce33e62d928ba2ea1815f43933b. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-16T21:55:37Z), 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/USA370675284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf67eb7d8ebf339ef6ec3cb8641961e89f3221e97d7dac90a8b945782972860b. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T19:27:18Z), 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/USA370675286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c851670d1a5de9fd2737781bf9aebabbc434e5daf09a1ae788002b3fdfb3135. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/USA370675287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9c591c4b6886a4cf37fb6e25ef398c900beb455642418188c3b15195e8e9bb3. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/US7SF1556102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x981b9710032b56e55451fa6a29e1a9f5e4bf5fe6732b4cf803142b359e175075. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/US7SF1556099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4ce8403e6d9651f1234e00f376afe1827a68a04a36b47e2dab31f96db25a7b9. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T15:31:18Z), 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/US7SF1556103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48a9efe30cbde6616f9485b499f171da9ef554b50984c1beca86898cc7936974. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/US7SF1556104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15bad844db2f5ac30438aab7de165a1127b8785d21b70aff37dea076c3cd99a3. 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/QZPLR2569743.
1,2,3, I’m a Gee (Feat. Master P, Silk, Big Ed, King George)
Bay Area Playas Vol.1 (The Ultimate Bay Area Rap Compilation)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58686a70cbb34edde2245dd0ca1f9a28826559128fcd9627b1dde1c07f7bd9f7. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/KRMIM2425441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0543f5dcd577e6b7fee5deeeec9b8ac0bd0b21f68d32c83374e804e9503d90c0. 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/USEE10001541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e3529c95ea2c9ada5f1238a3b957780e780323e90a3567e3d37c9471031f3da. 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/CH6542138802.
Right Wrong - Silk's Funky House Mix (Remastered)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0d64549bb7f7948f751645a38ce689a4df52db20a78e79cfef3854d91fcde77. 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/QZTB32219682.
Love Could Be - Remastered (Soulful House Mix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45aa2a5ef063660e886c6a030b790b403a10cf066ca533c948bb034c969c1b0f. 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/QZTB32262526.
Love Could Be - Remastered (Funky Electro House)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86c74205f45949e23d35c82f8ebc42821cecf7d58b62fc338e0fd69cab6ae13d. 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/QZTB32262530.