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 0xa9d27307cb8f8350575540e836a49562c38e366a85f2e3440ae35038e1ce7fcd. 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/f5b74b8d-f65b-4c98-b8ec-99712a323a86.json and https://artists.proofprofile.net/proofs/artist/f5b74b8d-f65b-4c98-b8ec-99712a323a86.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 0xfac278adac7ae869214c6b9fe5ba334c8975653e81c99ee145ab5868b5103cca. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T19:29:20Z), 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/DEPI82308225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x112b383d786624910c607f5c24207b2aa238827849f564be01c774e7f9389210. 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/DEH742220012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1659d981322b158c7fb300b04cfe9c083488ae85e753c7f73e69ba7930962ca. 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/DEH742201041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4014e098076fea5744b00823f9871efd10d984bb48e034dbba01308310b553ba. 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/DEH742157457.
Braggin' About Yourself (Block & Crown Clubmix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10d858b387125a02a5eb4deac4b0bf41e746b418ba132e1b1e964752093f521c. 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/DEPR32000616.
Wanne Say Yeah (Marc Rousso & Hardcopy Hiphouse Mix)
Wanne Say Yeah - Marc Rousso & Hardcopy Hiphouse Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bd1cc67606cfc20f28a5a5b054a2b6db60014dca18c385427d6fc5a35200600. 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/QM6DC2098145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc93f2f0f8dc09d06e34b28de58597662f63380654de308b9094d28d9bbb1b2b2. 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/NLL8P2000063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc046b14b56e72fa10fb6ed7692a5e3735111e8352e6618bb09899b317a56e877. 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/DEPR32004488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f416224ae75909f916bcf8853401a173a821f4f19b8e0b9a25cdd1151cf3012. 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/DEPR32000405.
Right There (Everybody Dance Now) [Luca Debonaire Club Mix Mix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85d15f27a41dfdcf21f08b94acd93792f24984077510a4987a951d364ee89595. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T08:55:55Z), 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/QZNFJ2101221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e77a48fe3602fbc1db9eac4500863bd12449c4cf8f01cc1767bfb5eeebf741c. 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/DEPR32000333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff5d5af3787451ca3ce4ec21d9c7aae9ea8de54b0334a3e5ef80a819eab1a36d. 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/DEPR32000288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad0700ab2407eddfc5abb0d2982102a281eaef3378944bbb337d1d8128e3e0ca. 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/DEPR32100039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dc22e76d4a29e0b5dfa399e283879f79781fbc3cdc970a3e647945b183d2fce. 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/DEPR32000088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2af61328af025a6825e2f521858d714cc88e42c261b45ea8c683c2458b719c75. 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/DEPI82101262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c996d8f8e3da5552b3d5c99fec1a47ab1e10bc6f8a4fd2229597221a2e4bfd0. 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/DEPI82306710.