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 0x548eced38f688d804f863f6295d711c7f08ef0c7079646c44888282e35af047a. 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/a7572895-064c-4c18-aef5-5b58ad64df17.json and https://artists.proofprofile.net/proofs/artist/a7572895-064c-4c18-aef5-5b58ad64df17.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 0x89dc63266b27429e49a648e8020a727b8f4a8adbba39ee56a57d8c2c0a83c760. 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/QZUCN2201591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca93adcbe69672241687f06b70cbb6b0a618682fcd596932204d6e1f1de0316a. 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/USUS12100286.
Diplo Presents Thomas Wesley: The Mixtape
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf5b050c6d727c20a50a0288d46e422966dfd1ceabe489f9212848d1e732913d. 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/USSM12403375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa556f1b4e772ab19bdf8b6af93edea31f6c047b6dd51e40baa3382b317df89ba. 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/ROGRA2202516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84193f9b3e247061e06a206d22aadf2d26b817938c7b19d630b9d183ad07f721. 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/ROGRA2202517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75ac8014cff324a096d0e67830c5e9a183236e1a30759f29018f4e1b125c7dbc. 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/USUG12308167.
Pretty People (feat. INJI) [Maesic Remix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x276c283087bb446577e0b04d84da797b7fba9230beb5a7b92f7f8aff6d9e1dad. 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/USUG12302848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25945ad99d2da2611a4dd030c7a4334d31e5c2ee2ffd8b3ffae897c39ab397b5. 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/TCAFW2139513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffbec00987fe5dc98b4d25dd344662816b6572b901d9704751b5d12b370fe0f0. 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/USNRS2443342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b0176de3a496d03486117c895022749f8ae4535e5ff9df4efefc34b8b08790e. 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/USUM71702837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75ac8014cff324a096d0e67830c5e9a183236e1a30759f29018f4e1b125c7dbc. 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/USUG12308167.
Pretty People (feat. INJI, Maesic) - Maesic Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x276c283087bb446577e0b04d84da797b7fba9230beb5a7b92f7f8aff6d9e1dad. 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/USUG12302848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc73e4ee9de5e7cf952b03621cdd7a668b523b68401e3d006560443aa854ddd0. Chain 2 (Bitcoin): anchored in block 960153 (2026-07-29T21:57:12Z), 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/QZUCN2201403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e6df3c5e193097df7fb8b45e3bc936cd623041c74281e885ea34cc8947051cb. 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/NLZ542300905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cfff382685bf9e9e8b76ecc2b173b047037ce44ce8fad69dc25185eda52ca25. 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/NLZ542300904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9305ebc818f467f6db10c1c47e0958f71c058f397a03c75507748e882e4ce6f. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/USSD12200880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bf6a66f9917b40784af214fa7f1542b817be434e37a2c835d4a80b7ab7113d2. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/FR9W12129566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x356bee22cd3eb2b8cbfe12f0f6964f6a3b687bb056602e7c0b5f45e54289bfbf. 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/USA2P2448850.