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 0x6c30f7bb4bcceac824ac72351cefc59caabb8273d50cb1eadf69be2b4247b3bf. 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/e162e9be-a143-40e1-be59-234965fc34c7.json and https://artists.proofprofile.net/proofs/artist/e162e9be-a143-40e1-be59-234965fc34c7.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 0xc050c3920b54c876d74ecd44c5f466fc28324588c245f6977b86881c4e08327d. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:28:20Z), 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/QZTB52202236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x257b89a43b276923eb36214064cca3ee0625212a3f447de2cc8fd7d415435fe8. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZTB52225649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c86e51c693f70c0e9b2af9ce6a5dfd6419336e98607db76b552d3df46ee5d4c. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QZTB52221975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9f2ec77e4bfc1facbba671b8e5ca94bb1d3c11a47f35cd203347301ad3f3a77. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T10:38:38Z), 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/QZFYX2339009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a8741a58a5868e61ffe1db2f599a28c8284da77a8e61142304c16415c66f8f2. 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/QZFYX2338174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37c7f8f9196f31b123d95024653ea301c019c3dbfb3b2833afaa8b5c97d72d43. 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/QZFYX2339793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd534377c789c02981744e93041ba23485f7a9b51a58e1c1b71c8b49b5ba8ae40. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/QZFYX2338973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9391bd4b8e94ab975dfb50a372c7aff943c963a86fccf7bb08bc7cd5b7170c2c. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/QZFYX2338968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c750bde5eead77c629d3f4e73c3cd79ab6a59e9493050fcdf92195d06b7dbc4. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZFYX2338995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78d3147866c4c96bac52fb1a6310ce0c373ceeb3b8aae26310090bf4d28cc6ec. 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/QZFYX2338972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7ef1f59588575bee3a53e60fdda42de818dfc068b6ba45ff8b4fe6c0b8194ea. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QZFYX2338989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52874a03fbaa51be980f60c023d6861fbe70380015e98ad5e1f5f8963a197f2b. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T14:01:56Z), 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/QZDA62372700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fb60d4584a4d17ead37bac420d68e8cb07e26b1039696818c7ac7c0291e91ef. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/QZDA62374572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5b2b9266e7bf673de4470db9791101890c0143c15bb965d2e106d63f7fd0b21. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/QZES82384926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8090fae1c5dd6c9af7921154da842898f82af0ff3f89ad105e84168974c49a1a. 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/QZK6H2373518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9780658cf033cd42816551c681ffde929ab9039397b8b338f294729b25799d18. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/QZMEP2304673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x751e7e8bfa703e9d5c6e50eb4eaaf87520929fe837006bca93d3fa44962122ad. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/QZMEP2304678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f986e54da39590b8596da81a6ceb0e4a2f6ffa0ae42d8af86b44847a3a8b93f. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T23:35:52Z), 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/QZNWX2325467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc695f759ad780e11616f62872f3997348d16ea3cc72ab509bb32938118001e8d. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/QZTB52322315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd0fce3eb81acec60c9ca4f0abdbca4e9d4d503ad54a2113954e4c3f19b0c511. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZTB52322303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2fd4a219e041c4ee998a6a67dcb67a00e44bfe40893d89b64a0f8465361dd72. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T21:06:27Z), 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/QZWFJ2348995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefce3b6636edcf5354717961b83710ef6c076e6472e7b3a61b09febdea48429d. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/QZK6P2412982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0aaecb196cab4adea295b5ba4904df62664abd203df7614ae6927e761d09edcc. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T08:47:22Z), 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/QZDA42576677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b7908ec181f8006a602b62536fa796707561d00bff6e865801a09c7a28505c6. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T08:23:26Z), 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/QZHN52509224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01f300204f68ed9fb7ade2738d0d5c9bbeb4f4e89ace16e7dd87e5d1297fb5bb. 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/QZHNB2550917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd83074adfa269fda6b5fc706b888ab643092ef14f3ffb586a67d49e51ed4f646. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/QZTAT2524863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01732afb0399e3012076fc15311d74feedd55d15b9c6e123fdff0eeec0d3e6f1. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZWFP2524686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf42ee6d747c481147a359affda645c5967436bc46cda3e83c6b7714d612eb5f7. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/QZZ7M2525574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ced5e1f778016d8ec5ba8d1fc61e6b10f174cbbdfbe1d093e82cd5a8f163414. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QT3EX2576718.