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 0xde9a730f113df0af8344343d1af3fa1c763163b8514e6f971b0ec91d9e1cd1fb. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d4727ecc-f058-46eb-b4d2-2fbc0412477b.json and https://artists.proofprofile.net/proofs/artist/d4727ecc-f058-46eb-b4d2-2fbc0412477b.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 0xaed3109afb194e66c1d847477ffe9040c1e7c0ff01887da81379af78b09f56c9. 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/FRX452128164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bdc2ce425bc5dcdd8ebfd81bb3932925934a53bbf444b72f5f8fde8971b3eb6. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZN882118951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcacb6396c70636b952212cf4347d1a7546726ebae004812f3e767b9ec5d5ac8a. 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/QZN882075867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a8c7e7445cf0f45667e9f9b8ab97fe16396e87bb5356353dd07408feb5a6d45. Chain 2 (Bitcoin): anchored in block 957025 (2026-07-07T10:59:31Z), 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/USLD91728748.
Loose 1 x Fumez The Engineer - Plugged In Freestyle
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0556f47d931368dbd3a9d4908e5db23c533a3a6b4c96f37d7c472717e8e0c017. 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/SE5752068601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x464cfcf7bbe0e08ad32ba8b92c137490b31a8a7def8a90e616485edb0d330a5d. 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/TCAEN1908488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29d441a55734b0b46ee51fab1b2e4ab23df81711e88d91bd787453fd9c25455d. 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/GBMA21867212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xece4226c09388d02cf2f6f9c1ce906d1b38eb582982fe68a19f3cfa7caddd20a. 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/TCAEL1985410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8758c893bbb3ee28e8ccf4325308b7978c848dec3d18e9934b9780b9587dd4e. 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/GBMA21988617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f564d1e554b5a9cd22436d5bff53d094a00e25fa25073776721e6720c8015cd. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USA2P1930967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fa077a394b78604a458989d5abc10fc136b43739ec32f913a8c10eefb45771f. 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/USA2P1930968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90c40b7304ecbc3d37c7ae43452704b86fa9a1fdb9a6d707b27b644ed1a8439a. 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/TCADZ1888396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6670568563c095c2fa2f1bd83f2ec00d27d1d53e1466ed262fe952e5d1a8874e. 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/GBMA21867424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2f381e4c6a085da6037095f91d3ed716659ee7329cdfc46ed30140e75f2987d. 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/GBMA21867425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b17f1b205f4761a74c4f6dd6a704fea312e91f2af97fb2273df1dfcdab46d4c. 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/GBMA21867429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4cce7b2750543ab0cc71371b23b8a8532629859aee1af91a56e77348a621ae1. 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/GBLFP1926952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1acc50f809c66bf3b1b3bdd79d94655645db90d83ad078fbd9db2451e1993dd1. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBMA21867431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0556f47d931368dbd3a9d4908e5db23c533a3a6b4c96f37d7c472717e8e0c017. 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/SE5752068601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0ebe577d7898cdfce46be1fa1fbdfe3b623535526bcde2c01f3e2820dfda69e. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-21T16:08:46Z), 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/QZES62167581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc42e3b2d9cae96f9292d45a5866a2c2a61e6a7a14024810e8c59abe5e37ec68e. Chain 2 (Bitcoin): anchored in block 958041 (2026-07-14T18:13:17Z), 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/QZES62167582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c8b359fc023dd4cc055f96f1291ccbef0960611a789d1e8ba776e196502642f. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZES62167583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff9b70b72e7ebc70d3e0d0b16d945612f1e97840c83db4be977e27f42d1135bf. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZES62167589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a507d8d85f5b1503163e98a8dffd3a68d6872387967bdadc82823a7ac4b9132. Chain 2 (Bitcoin): anchored in block 957055 (2026-07-21T20:21:36Z), 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/QZES62167591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e0ea919cfbe9253033588d897313b03aea0764982393391218d23180b8c55ae. 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/QZES62167594.