1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x693ed044303433478cdce8b1de722d7eb7ef2d3c0024f1750671a3f948060676. 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/863b43da-8a96-4dbb-a4f4-5d6315c5e7d8.json and https://artists.proofprofile.net/proofs/artist/863b43da-8a96-4dbb-a4f4-5d6315c5e7d8.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 → block OTSBitcoinBlock must exist at that height 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 0x07a9f80e13a8cd9e16d165b93a0115eec5068a357fe515b3ef4ed9270b2cdd0b. Chain 2 (Bitcoin): anchored in block 957709 (2026-07-12T13:52:43Z), 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/MX2831906492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b8f4ce5c759251d21f986a473eb7564c560c56f7f7a49de2fa59f7c3af42c09. 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/MX2831906493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe63b84a0bd22711b990d62d9812701743f5cf607e02ea01f088840e33058a006. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T02:20:55Z), 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/MX2831906496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde3bbba34abecfe8ce50877f077de6ebd4b5f2ea09a4029ff1af4e0358b34291. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/MX2831906499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5039ed81c9525eec5c7177cd81ead217f4112d756b427b4c61f4aaad564b470d. 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/MX2831906500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x991e08b1d4983b89dee32aa42b83881d44ef585884a560984c274cb3562af390. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T01:48:15Z), 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/US3DF1999352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3dd11a234b34d42cdc1ec02262f1566cdbfbf91a0724a5ca5ef69e57365af62. 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/US3DF1999355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe215c49be9999df857402ab26ba157904843009663380710dfc40e018d8dd755. 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/US3DF1999356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf0232bac5f3e4ebd1ef6936a167cff325a96d5c626b2a4ad0bfc7d543093343. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/US3DF1999358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48cf1a024c3000949a8e22d4908e0c93ea2f9d659ee00ac7d319d381522a20fa. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/US3DF1999359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8047ba00b33de08253ddea7c2e7a618583cfb597d4cbf48c2bf3a79b1eaf2122. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T05:55:09Z), 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/US3DF1999362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x082671bbcd46dfa92b46d4c729af7694891ce5d6ae0ed17be95956f40fb41f7c. 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/US3DF1999364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1d3ab61598fd77b1740a875e3877070c87c72f803461ddcc4a5a0c2abf0d248. Chain 2 (Bitcoin): anchored in block 956861 (2026-07-06T01:57:57Z), 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/US3DF1999291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x054d3846c2a7df635621134513c2c8306e5d0ce0508aa53c3414c053b005ab31. 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/US3DF1999266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f6d5228686f6047fe7a31cf90b085a754f201bc23bf62b2d70c861bda8c6cbb. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/US3DF1999639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb29939720c2de042eaa0724bea4087bafe0032aa3ac35c9947fcda0a0f5d1d8f. 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/US3DF1999645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f60c65502aa0affb2a3db836344e01053d2cc806afc31fb15dce145705512ac. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/CA5KR2002342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65a11c790fc043eb8093483dff5cdff26b7d1b16e3d212eedb1c2def585aff96. Chain 2 (Bitcoin): anchored in block 957702 (2026-07-12T12:25:41Z), 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/CA5KR2035003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8161e7dbe673609940824a3ad12627bbb7eeec7a6fa0a65d1140bbbe6898a525. 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/USA2P2323134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d16dd4e2f38e29fdb649d2acd76125677f0ced3cd9053f7bf759d0004be6437. 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/USANG2031364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5770456b7db42ca11d6e458e06387c244669276d17d6ca48e80b451d3b938b7f. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/US3DF1996561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31e88e5431aac6fa982590f1b43c67795f687b94e8c635b152cf1b727fad6d35. 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/US3DF1996563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa875af6b5373ed1e3a5f39ace798457a44c6280ea3b15f2677000dc15953f64d. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/US3DF1996565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36c701173eedf2154f255b7bb20b57595e3fd2d35a7c3eba77914d866c9d75e1. 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/US3DF1996569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa47b5c2567e8a55d526194535b05c1acb72b5033ddc6fd80e9e61419562e4e1c. 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/US3DF1996573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bd7b1b7ff9a5ae2f0050addbedc2e6ae22a8bfdb33a93fcd9164d7a67661ce7. 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/US3DF1996575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec75de492eb8e1e2daf6a9e1ef13734f5a32570b9cc3bbe1dc83f6f856457f85. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/US3DF1996578.