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 0xef484879e1abb813eccd02d7b9ec13fec2a2532321c3b8b11b895d54e56a5d43. 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/d05f02fe-3205-4a8c-a12d-31e1791d060a.json and https://artists.proofprofile.net/proofs/artist/d05f02fe-3205-4a8c-a12d-31e1791d060a.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 0xd75dc689b93213bebc6b1fa4b7d12b1c27c8ccecfa6647d289a617b9a5617a85. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:30:35Z), 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/DEBG60900321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6e89c4f1d7a7b808b05ee9e22e4facdeac74518d842f546bb4451f01d0eb101. 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/DEBG60900327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e599780fc3247e4f3c32a40d1da6030c55f28dd1812fadcf54b131fc5a44dcd. Chain 2 (Bitcoin): anchored in block 958476 (2026-07-18T01:26:56Z), 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/DEBG61000924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x255c4b3a826267f68d4ab32118dcc018d036515f9397be75576f5aa32f3d39f1. Chain 2 (Bitcoin): anchored in block 958682 (2026-07-19T06:17:12Z), 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/DEBG61000927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfd46464bdec251541ded46b654c120661b5771b4493cd7518327079e8a114d9. Chain 2 (Bitcoin): anchored in block 959091 (2026-07-22T05:09:27Z), 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/DEBG61000931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce15b37b45b5d8b7a1f713ce8a525238fb794b05e9b25d75402a18192a65bd91. 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/DEBG61000932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fb06c089036b2767bcb3e3db0a10fbbebdbd67591501316a8d43b6b86e0978d. 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/DEBG61000933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74949685758dd4595f873553f74a0ac3e6269a2a5b747389169f4b602f0d619b. Chain 2 (Bitcoin): anchored in block 958666 (2026-07-19T05:00:30Z), 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/DEBG61000935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f20091f5f92fc8418f15895b23de3c6bba1844994908accebdc72fae23c2b19. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:04:03Z), 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/DEBG61000936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c28c21014011811774be8a1c9601b3c77cbb9fad28c2e7bf65dcefd8a7fcb33. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T00:34:11Z), 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/DEBG61000937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f43d7e8579ab4caca674162d9bd60df408468ccda161b163a3c011d86b0b7a5. 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/DEBG61000938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88932576853845de45c9832a43bfc1ef3312b47cfec686e5350ee129f2596413. Chain 2 (Bitcoin): anchored in block 958658 (2026-07-19T04:09:09Z), 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/DEBG61904749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6834d6e24d67e71e028f3bf4837906f07ffc66cea92a92bdb04dc8d00df3b4d3. 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/DEBG61402518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d0e1d388f4edb9f7424f264b276a727adb231017c23bfe3e21e7174a36dfe74. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:33:28Z), 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/DEBG61302054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0bd12ff2c39ab7811006904ab4c6e3fccc5098fc6bf2b5c9bd66bb7539e5a8a. 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/DEBG61302063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e9d1dd2e33808a0caf0adaf3a240a69dddd52f8b53becd6c487e8e18532fbe7. 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/DEBG61301916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5a0bd6cd6ee827a290c128be56d70e1e723e375bb522c8445335108963c5bf0. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T06:50:50Z), 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/DEBG61201313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ace5072a1e3521e1d953c2f20ed499c9339ae6e81453f910aaf0e8288c4d5c9. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/DEBG62405992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa80e56592942edffdc700301ccbd763382b32d8228234c0ab883b57621f2f11a. 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/DEBG62004815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x795ddac01da0a1052567d75e9b6195b6f5abebfff6d9e7996ea1f2fe6a51537c. 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/DEBG62004988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd55a42a87d130c80bb32dc2a1c638618870acf725781906c3fb4656381994fc8. 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/DEBG62004989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x389e4d985a96504b33a4f56acd6655991dee289ebf765a801b67a3319d7bbfd5. 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/DEBG62004992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x766dda9d1f0f914b7b33d99a892253ddd8bf3c3329684fbcf588ea3c47210be5. 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/DEBG62004993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd55a42a87d130c80bb32dc2a1c638618870acf725781906c3fb4656381994fc8. 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/DEBG62004989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x389e4d985a96504b33a4f56acd6655991dee289ebf765a801b67a3319d7bbfd5. 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/DEBG62004992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x766dda9d1f0f914b7b33d99a892253ddd8bf3c3329684fbcf588ea3c47210be5. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DEBG62004993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa80e56592942edffdc700301ccbd763382b32d8228234c0ab883b57621f2f11a. 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/DEBG62004815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb49e077d12228a995eb914f539a8963dfb068f69a8c260b052a04470eaedfab1. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T13:20:46Z), 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/DEBG62004991.