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 0x79449d5ade26dd153a9e978401f8c52e246b25d65f44243c2e9e7868c050bb0b. 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/c7287397-2097-41da-a337-1a2600ab1635.json and https://artists.proofprofile.net/proofs/artist/c7287397-2097-41da-a337-1a2600ab1635.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 0x7068668022079108148fff0e2a868b7b908421cd64f158dcf6e353ce740fcc13. Chain 2 (Bitcoin): anchored in block 957751 (2026-07-12T20:41:42Z), 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/QMJMT2002679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ba9790ef9381c3e4f278ffb4883f57e4c8f5a2876f0b925f8811398d35412af. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QMJMT2002977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xece243979e3bef67c33323a2af48f09bbec73755a0c8aea7ba7b158b8874d700. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QMJMT2002975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36369796d5da163f2938a39e586de4f01681f6f64a8bdc1a3a46abbd7ac5ba4b. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/QMJMT2002978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedb6d5b5e58ac9c356cfdaf90738d2cd9ad1a2d20c28d628b7003954aee9f506. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T21:34:21Z), 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/QMJMT2002979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x155dd6ceee097e57cb7d6f80ae17c147311b87bacb716d2612ae55aa6fd78bf5. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/QMJMT2103915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b501f58e3c5c01853ad5adb904c9d3f0087934e95001c9cc829a1486d99d217. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QMJMT2103917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0daa59fa1b8b5726ea2a1af96996f1f93bcc4d8e3b5aa037bf78bedf1f503927. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/QMJMT2003286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb138e295ea151734aa5464bd0f2ff4aac6feaccf597b36c727204801ef8257c6. Chain 2 (Bitcoin): anchored in block 958506 (2026-07-18T06:14:51Z), 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/QMJMT2103919.
Hopeless Romantic Remix ft. Wale - Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4619c59dac65daeb95571305c16cc4edd5c8f0e00188a95ef0fc21cf480cc333. Chain 2 (Bitcoin): anchored in block 958817 (2026-07-20T03:52:09Z), 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/QMJMT2103939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x046fd5ba998f85423d698e3980ed9f75286872222eef3e0253651ad3f4e05b09. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/QZNB82428012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x679439f4be79edde75529f46eaf69eb2d9dcbd4aa875abfada65004fcde113bc. 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/QZ2GW2100120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17ca92902852244fed9b64f7dbea577f24940b668049c6cd007a2be24b3ab621. 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/US23A1582758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x679439f4be79edde75529f46eaf69eb2d9dcbd4aa875abfada65004fcde113bc. 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/QZ2GW2100120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x229ae0fa91616bb263fbdf6ff8f3e51a0fe58a26cd0680c2f2156222419d3be1. 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/QZ2GW2100128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11284d583863eeca521700587992d997b66be2ad0905b55ef45674eff2a85891. 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/QZ2GW1900155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaf0a86ebf675fbc1322dfd43d7ac3b1f79e994e4398d86979b9153d42b7ab2e. 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/QZ2GW1700150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cdff54c465ebd91e6eaab5c7315fa485bdb54938a550ae88a171d3169106d2b. 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/ZA56E1800113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5defb1ac9a4c51fbafaba968c46924a69e40f14ebdffbf4e0b66d54eb4f9afe. 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/USA2P2465903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x350ac39668967ea8eb32a7f05037b017d81e16f57340c9515027804a2fdebc1b. 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/GBKPL1960607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebbbf6c05276d5f61db33116b63e03b571f061ee1f1b21cd2589aed582721b4f. 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/QM24S1918949.