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 0xc251ded5b5889643464db1712f45336470de4d633c327fea951f9108225a4dd4. 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/9bc96690-17f8-47e0-8f2f-7e3ce96feec8.json and https://artists.proofprofile.net/proofs/artist/9bc96690-17f8-47e0-8f2f-7e3ce96feec8.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 0x1aede7590d56e482484a5a9375b9c055e733fa694870643397e3bdefc3d70362. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/QZHNA2089172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x726b8b4e30053a08414ab07d3b03d4477c7d2c14c1dfd9f396b903ed3f56f611. 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/QMFMG2331210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27f700573ba86ecba40518ed6c303c05b27bb1d9033e9252a270465c62173622. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/QMFMG2331218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f7ca8dc42abb336955d0f7773a6eb826a5773531aa579cd5e252625c924e321. 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/QMFMG2331214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x805c61948c2a1a6eafb13ce94c83a48abc1381ad4414dd56401405b7cf3b049e. 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/QMFMG2331220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e4ec981b9ac05334b34a73535c95348eda2a12221206603572b8a2ab1a62bce. 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/QMFMG2331213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb38ad6f438c40b56fb5c1e36c6d2c5af8899780bb31b0908b27b06b126c81044. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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/QMFMG2331211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03150397569aec8799b031663a7af871d651b20f2dd06b9f05da3bc34984c314. 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/QMFMG2331209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf0c7100790991465587a2f53826ce425e58926b5848a05fbb1bc6705a48d704. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/QMFMG2331217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3cd1408be5edf455a1e1f6f432139123632cee47b002f71a1733d819db8c5c0. 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/QMFMG2331216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x468ff242dd785514e4e87d78197299eb5b8d8e3e287c5afd447356a8fbe8aebe. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/QMFMG2331212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54a6d9842ecbb8e7555e5cc5e5f5cd52ce12491eeb4cf6047c14454151ee5b2e. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/QMFMG2331219.
Last Song In The Trap (feat. King Hendrick$)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbad52c62839e3b6ee64d81b108f90386ca0cfda1f0e2118c2778f1fccee8bc37. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/QMFMG2331215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80be55e69e2e45c22fc56c21d1e3011bdca27f707852f4ef839523d3d4201f8a. 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/USUYG1420903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30a46e8f96e3127bb1e13f51d261f15255c9bcfc8ffc7c1a8534f6b291b552f6. 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/USUYG1420904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce31829c35373868ed963a3053332c265326b25e9ffad74db45b916101e5b12e. 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/USUYG1420905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb02d1a5ac8bb0be2b28c4b79e42d494a53dab2abf9c5d4b6fb45c11935401f67. 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/USUYG1420906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c7cc91693998c06868ebfe7159f6cd3ef1dde91214988f18e219a30c8858f5b. 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/USUYG1420907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x836cada5cdefd0a6b64986b501642b04664ba9647aa5e0bf720affed1c94a52e. 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/USUYG1420908.
Love Letter 2 the Money (feat. Babyface Ray)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f83633ae7915cb75bf8d4d4b1b5f3590c050fce2877b5d400087b622a979c57. 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/USUYG1420909.