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 0x875dd9e94cd1d0fb8d5df6cac3e4cd9743704881ea7eb697e584d64e45c70bac. 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/e86b49e8-3ed8-4300-900d-9d01e82e3fe8.json and https://artists.proofprofile.net/proofs/artist/e86b49e8-3ed8-4300-900d-9d01e82e3fe8.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 0x46c7277587705f0805466eb3c60f68b509a5a0835a325dbe1629269318f2cace. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/QZHNB2337575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1ba71517efde5a6f02e4f36f2420384116b93963e77cf1f20217d5578f20595. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZTB22321949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a50a1f5732e2f02a3c718bcbf9514a40cb7215f0e00486953533c913c61b633. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZTB52300866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x828904f60fd32ba306c982febdfe2d79e2441fd6962f5fbad3954f4a53d14a39. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZTB52302653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1366f60f6d2334586e099380df2e11b7d468726c9b8b71138373022a8a907f04. 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/QZTBF2347601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03a2dc18f087c1fe044c66c365bd105afe195d6f20b64a7417e518bf8cfefcb5. Chain 2 (Bitcoin): anchored in block 957587 (2026-07-11T16:48:26Z), 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/QZTBF2347602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61fe54e226880e5bcbcd76b86b2ffce563ed83e1e23b8b4d33ec64959f8cedca. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZWFJ2305671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8e87b7a34c32977b2983553c4761e067e11c1fe38442ea02d751c6967f806b4. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZWFR2380266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb38f541a849e80f911e4fa85b3a61c6b00ba63647d384327ce8e0ba9289e3ac5. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZFZ22418500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ed0823ceb754fac22e7ecc8f1ba552fd22fdb612294c0e3ed07f188bf489bb2. Chain 2 (Bitcoin): anchored in block 957583 (2026-07-11T15:53:17Z), 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/QZFZ62431385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79f827452f4006b79b8658fa18590a3aad5e959c1c4b004dedd35c736590b42b. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:19:57Z), 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/QZDA52477408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f68e7733cd7241315f4b61ede9c24e94885c4d1ea36b390a24b322b8b912c01. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZES72411509.
Won't Hold Me Back - Instrumental Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c6d86e12f92f754c0506f722a0bce0f6b20e07e2a3a9387099c99ecef326b8f. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZK6G2411452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x720a0b7b24e9b8f494b2b9f6ceb698cc600e4ab99e80be475ecc5ff07fdb960a. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/QZNWV2409115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4eee038578df97d1b588008a9545083eedc6d176b60fc33be37e8ef9da2ac12. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZNWZ2415348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89cbf7422fbc588249c2c103bda8e11670c4912b940e20b048f0380b4ee72003. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T21:29:30Z), 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/QZTAU2456423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ba4842bdaf4bc28469a8c7885fcbdb4616de08b5837e016f1c68076694cd9cf. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T17:34:04Z), 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/QZTBC2476642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0489d79a5640f0ad5be5a79faedec4338ea3853c24011d2b7daf6ce793e2d09c. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/QZWFV2424878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf849d14fbc03a2385daf2918ab46d188fa1d9688e96d114d2d3fe21d4c2f48c. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/QZZ7Q2402711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x476a11cddc072bd113d480d2f2128f2747032af7614252facc8a30a4d25a4a1c. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZK6H2337641.