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 0x58cff89257b935fac538c42bd1c792c458e593b4842c98f73ddcdd7df04916b3. 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/397b7308-e4a5-44e4-869e-b8866727adc4.json and https://artists.proofprofile.net/proofs/artist/397b7308-e4a5-44e4-869e-b8866727adc4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Aint Nothin Like Hip Hop (Extended Jazz Remix)
Aint Nothin Like Hip Hop - Extended Jazz remix
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 0x888ebc7e67ad450b56dc10848f56949cab1b7bcbb4690955dc57b2017a21ed65. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/USCGH1548119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd02750ce408303d81fad929de4733144b1d206f1d92be88ba4ff0cfe52ce8b84. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/GBMA22330981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x151a6588e0dfe44a6fdeaf26098f0695a3e0991c96e3d601060d707c478fca75. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/TCAGO2283130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x197cf8631962cfb7c8146e292b18a20868a82b9dad7c2d8d8103052d3a385ab6. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/USLZJ2374457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a5ecf47b4663d82cf5edb031a2a8efc36da1f9e9e4efc975c13b62250f1d9ce. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USHM91208286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x830f4bc46a7ebd614c1b6a45093bc4f343020330591529f008cca53325d3fc44. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/USHM91208283.
Ain't Nothin Like Hip Hop - Single Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd01da3bceb6028a536295a96dd45cc3d379d0af20f91b71f6e931779c2bcc07b. 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/USHM21253082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a161acfcee5808caedead691c45cadab93846c482ca8a8707ad28fefaaf0927. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/TCAGO2283120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e2679a27fa17f448ed149726adf73f7bedae4f8f21c071734989af590685687. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T02:01:41Z), 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/TCAGO2282929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb812f503e28c66e535efa8c0397e6b06a7c43af77b1be99b489d5cdd25abcdaf. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T13:14:05Z), 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/USHM91208281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf90029b1bf60fcc6d9520d0c584d6edaae38ebc3ac32502e3836bb3e63d17c9. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/USHM91208287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa10edcb96e4bd4b8324bbca6f85b7fc1c38de376d65cc89ab56858689c908df3. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/USHM91208284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26e0aa81b8fb4f6032498962acf13731f7ac272e951a37cc871888f5280fa72e. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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/USLZJ1600409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c868965db375a25295a330b43f66e509bae5ae8dbab50accd194f8d24db4f8b. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/USLZJ2371544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7570bc4961e23a5f0693166d6455ec952b3c8883e4c58f7fac51f2573356fb0d. 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/GX53U2300493.