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 0x6144ed273add026f6131f08d7aa7aed6145036aefadf1f072e8c88621f8f82d4. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b242c579-8564-4013-8e8f-103f5ebf5b27.json and https://artists.proofprofile.net/proofs/artist/b242c579-8564-4013-8e8f-103f5ebf5b27.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 0x7a93b027cd833e69384c4e23883819e4b44bee04a2979f84bb64c68819bb72de. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/QZNWQ2013267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98b8859533845d61da2631b678e34c924626697405d833b8ad670d4f525e4f19. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZES72125111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce2fe9e7c4670a0022b594414844ef3f5abacb8750b0981ac75f95619a21eccb. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/QZNWY2372220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10b801cdab9e7f811ef9ac6df50f4d66e44d6b23c5c23875b031df80b504bded. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/QMFME2381106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0027eac0b46cf882ee3558904415b191c94ad833295f63ccad82fed30c01e33a. 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/QMBZ92400761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x437d5850e6a503e04ece7da01572e5b8d84196354bc892ce5703fe4631fb6801. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:00:17Z), 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/QMDA62425762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cfbabc6a2a02a7ae554fe66e832879ce810e5aed0e5c788cddf5f2be75bd76c. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QMDA62425831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7682f14a62e7d8c874df9d1ec62b456972d56930e32ae447cbb55486c607882f. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/QMDA62474571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36d9893e90dc67ff9f0679c4dac2378addd047f7ca39ad4e125a8cc895f4f749. 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/QZK6Q2195759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10b801cdab9e7f811ef9ac6df50f4d66e44d6b23c5c23875b031df80b504bded. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T21:09:57Z), 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/QMFME2381106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x429498782c57b10a8dab17008f88472895de712d6b53b0d5d4461e016a0b44de. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/QMDA62468331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc34cbeda909b5aa1a5a2e10eebb27b886390049c51f1edcf3767c44c449c836d. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QMDA62468320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3abef28e690dbefa32f71ce64fbb1cd705fe8d9e9e3c9400532b97615000de3e. 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/QMDA62468261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39ad1f903cde60ffc100ce48cd3f13d257263d66138c38d8efb3847f1367959f. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-17T04:44:55Z), 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/QM7282540740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37c6f79f02a6b0c52fd169bec0cf6049eeb2713518810bf918a61e55f3c19c80. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/QM7282548464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19f78a5d055270080fd3a28c7d5e470fa66d159184b1abc91e0fb1a3c40c7c81. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QMDA72581378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36d9893e90dc67ff9f0679c4dac2378addd047f7ca39ad4e125a8cc895f4f749. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZK6Q2195759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x429498782c57b10a8dab17008f88472895de712d6b53b0d5d4461e016a0b44de. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QMDA62468331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc34cbeda909b5aa1a5a2e10eebb27b886390049c51f1edcf3767c44c449c836d. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QMDA62468320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3abef28e690dbefa32f71ce64fbb1cd705fe8d9e9e3c9400532b97615000de3e. 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/QMDA62468261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd7b7b806e21e24cb0f458b1d1bb5603866b9bc90ff44ba75da243c7d0b163ff. 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/QMDA62474569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb194dc1670cf0a62371761646dd557c2c8edc56d06e689afb0879b9cef57a43f. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QM4TW2500008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85198630bab17f59f11fa2858b365db2c92b7d817716f9b19581b9d7af05e3f0. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QMDA72581712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19f78a5d055270080fd3a28c7d5e470fa66d159184b1abc91e0fb1a3c40c7c81. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:46:43Z), 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/QMDA72581378.