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 0x5f12c3504a4143fac2930da48634aaf659fbf9c3cb7d0cfc928bf2132c640305. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fa9c3f99-0eff-495a-925a-05f71c38e86c.json and https://artists.proofprofile.net/proofs/artist/fa9c3f99-0eff-495a-925a-05f71c38e86c.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 0x480343d7a16de74a9c50224823a89cbec34ad9f22757705b8eebd62d661d102a. 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/USAT22301681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48941070c032f29140c92fa1c4c98b8e74381fed27310a772af9b6c757aa760b. 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/USAT22222152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x480343d7a16de74a9c50224823a89cbec34ad9f22757705b8eebd62d661d102a. 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/USAT22301681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x565267cad74a344d26e68252fa3e03f529d9fed292b5d80f07b14937d9286196. 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/US2S72400016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb312ae80e0e147e1574f9aa752656be6c86b81fd2be044b5b0884e1020b4623c. 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/QM8RL2001079.
ROADRUNNER: NEW LIGHT, NEW MACHINE PLUS PACK
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x470099485443fe93730921445266eaec6b32c30cc30bf19abea44681fbcd74f3. 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/USRC12100221.
Attitude (Don Toliver Sped Up Version) [feat. Charlie Wilson & Cash Cobain]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d9a3ccb480952d0424887237afb3583d07b232bc956538e291f9bf22d0bb570. 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/USAT22404958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c2c9c569759b32cc5070f62ca8a8ebe1809667969897a313894f452070239aa. 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/USUM72013375.
The 1 That Got Away/No Shoes (feat. Charlie Wilson)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5cb46b68d8f38510e13d37d70a0c2f46d873c2d509cf996cd53fb2bf1505657. 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/QMJMT1801974.
Remember Pearl Harbor: Classic Songs Of World War II
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3e2a97c38b2ddce7b9dfd2460a47ac137190dddd9f61b8662ceaa2a9f572282. 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/USRC14107194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e304e4d52fe31b0483c8d48ed57b8a22182f991a109fa885d31c605d8e6f2f3. 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/USCGH0503681.
Gucci Pajamas (feat. Chance the Rapper and Charlie Wilson)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46db0f18556459627cd149854f0286eff2888db96d6446bfd659d12ca9984a5e. 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/ZZOPM1901405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc02076123ef2adf7ae5e8ee97799c49025af53af8120feb0832db42012cd11b9. 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/USWB11902691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x470099485443fe93730921445266eaec6b32c30cc30bf19abea44681fbcd74f3. 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/USRC12100221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c2c9c569759b32cc5070f62ca8a8ebe1809667969897a313894f452070239aa. 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/USUM72013375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb20d4b1aff53799aedba86055338c3b4027b9578ab050150b1ff0b4ead61b134. 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/USUG11700913.