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 0x5ea3372e4e9acfe11f26f27951f29ff35a591b7d60c3391851182546fece48f4. 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/83d0ae61-1564-4968-890f-7a6e22c9f11b.json and https://artists.proofprofile.net/proofs/artist/83d0ae61-1564-4968-890f-7a6e22c9f11b.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 0xc4bd70a0af7d0a852f184c6083c9dbc958391861225cb8e9531915d72a334eab. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/FR2R02400590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61dd0c64275e0d2343e8f94b33a5466b6ec764a1bc12e9d57342af16eec0e9d2. 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/FR2R02400090.
DJ Hybrid presents Welcome To The Jungle
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65bcc3a7fb25dc49d228be4a2579d6d94d46f7c3d102ea2c62d9e82c36249de4. 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/GBFG92100359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa52399d53dd9888a8454bd99d384e8266fd2bd204637f2e60e9114f3236bae61. 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/FR2R02300920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aca7004793fcb51e3940fe3750f0db90bb13271121bdcb90564fb4e3ce6f469. 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/FR2R02200400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fe22cb6eb8c7182ac8e6b657745b7c553ca2d293212d5a539ff510eb39261eb. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/FRW572028008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6cabf7c2116b8388dc12d72d7d6087458017413b0000f8e3ce8e0100df515ea. 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/FRW572028011.
General Levy presents Welcome To The Jungle + Mix by Deekline & Ed Solo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93004e95812fc694b2d684678156d641fee1bf674cfbd88810de69322dbb7410. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBFG92000025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfac200bc002a157c51f619016200fed5b05e7d9956b5a01f0ad7c30c1514668. 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/FR2R01600020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe863aa783d7a80167516799b755e29425c429ec1189c4abb70341edf88fcaca1. 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/FR2R01500340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa70e47dbdae36fe22f46059d2a6feb3943abb704e47d790b587bbcb0d0bc3863. 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/FR2R01600040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec801fa923794232ca97f94e6ef4271cac509c56cc997def98cc52880c1cc351. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/FR2R01600050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe73eedc198ccd18f626a09acf580041df0f549a0e02adf62696d7e32f0a29958. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/FR2R01600080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb316297edb9bcf4e52364ff61726b2fd2ebb35388a7ab429eb4e95fd4934e29e. Chain 2 (Bitcoin): anchored in block 959134 (2026-07-22T13:34:27Z), 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/FR2R02300790.
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 0xab31161271bbddad4433ad48308ca4d61001824c09b65361f5cff2f135c174cb. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T19:06:21Z), 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/FR2R01600010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x265903b98a69a855caa0250d8dc80e1ab07baf322f91b52f91fd89f67a27aee7. 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/FR2R02300890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa6dabd55b51187b2fa0a6d7f9c288ee243cf19fcd50b0dca0fde2ea47f9eb0f. 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/FR2R01600060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6580ae93955158353f876b558b888db18bb01d27ba313c355e2c75e6bc1bf020. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/FR2R01500460.