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 0x3866783ee447b7736d1c1928c88ff1156f16ad62cf6951bdb28a66558a4d843c. 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/f67e8ae1-8eed-4b1d-9ff3-c68cb8ef24b5.json and https://artists.proofprofile.net/proofs/artist/f67e8ae1-8eed-4b1d-9ff3-c68cb8ef24b5.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 0x2f3f25bef9bbd87892aaebd457c0e7e9fb466fdfe26d534d52353771d971960e. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/QZNMV2062319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7e50d4767fcf4e427a498c6051c030aa701cbedeedcd07d19a05bd9577bc1ce. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZNMV2062321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80dc69d5fed13ac290140754c5be0f3a55d5453a70a0d0f456d4167260dc6b9f. 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/QZNMV2062322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x000cca2c83917306de6248ba6d9fc9f313ef0b34a992bf9054d69aa5215702c8. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/QZNMV2062323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa22a1c4a1d8af6c66dd42ba1f573d2a3c1a4a054334199e8a7f41622fe803865. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T09:43:52Z), 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/QZNMV2062324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6f228deb1863002282705fe299b50ec49b4563c742f3048d50957433614dce6. 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/QZNN22042242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x199e829e04e7d1a3a5cea29b7f97301e5b84954cd3666859def7dd1a539b66be. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZNMT2188422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e54e9e7325708b915abf7be7a98de00cf370752e4b0cb10f3c9350b307b88d9. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZNMV2221788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fece8ba7555ee60a7217d93452976f6fa5a4ba40eb00b5dd45ec7751c1a3147. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/US38Y2417048.
Distance (feat. Issa Gold & Erick The Architect)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19105cba4aeb466a2245fdb2fa5b7e42ae6fb6244b75132a729c58076bbb2b8c. 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/USSM11903514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65baac4c4a6af6d21e3602b2e445cabe56e7633db934520f84ef5809c9e9719d. 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/QMKSC1200012.
Snow In The Stadium (feat. Erick The Architect, Joey Bada$$, Meechy Darko, Kirk Knight, CJ Fly & Issa Gold)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5446553570441ee37457236d73b19366b12634f4d7c45a7efb19415482eb9f6d. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11903531.
Coast/Clear (feat. Joey Bada$$, Flatbush Zombies, Kirk Knight, Nyck Caution & Issa Gold)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x570236fd888a483cd73a780588f1ca8dcb1e44b298051fc87ec54e926f0a9070. 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/USSM11902298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13f8597853bee1d59268800867cea86060a042c0ce11202abe1d788ae460416f. 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/QZNWQ2095130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13f8597853bee1d59268800867cea86060a042c0ce11202abe1d788ae460416f. Chain 2 (Bitcoin): anchored in block 957025 (2026-07-07T10:59:31Z), 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/QZNWQ2095130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed792cfbfbb24508239786150e7b9da363db9e3577c54d39b753ecc6e8129bc6. 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/USLD91739904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ccc9d424728de6cc5c42ff0519b4745d79c22da4a278e41911a87a4d6ddc0f8. 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/USLD91735314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ccc9d424728de6cc5c42ff0519b4745d79c22da4a278e41911a87a4d6ddc0f8. 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/USLD91735314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23ba278c20a51905a95aabd9cbd1cc4f354e30ab412a25575b673c84ddd9df20. 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/QZHNA1911776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14d2328afd0758bb8d363582b8317ddd0f62232ddba5d681f6f394e6be9fd1fe. 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/USHKR0916910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6478a74cfff085b6006a1b12e7363abc8387d706efdd2a119dd31c26cdc067ac. Chain 2 (Bitcoin): anchored in block 960183 (2026-07-30T01:10:20Z), 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/QZFYX2180173.
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 0xced0b5e1553c1a10589caa2e4e5e41909f9ecbe025e8c2f5ddcf94950a3ea53b. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/QZNMZ2349622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8855190f0f38a3b302823a62a2c37972bd3fda198437d03022d8595d7a4e7ed9. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/QZNMZ2349623.