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 0xc63f84c657ca06e93723e00c7e4ab277b946f6ab87cba3f642511fefb24d1169. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3ceeb2a7-1489-49c6-9fd6-51068adfd832.json and https://artists.proofprofile.net/proofs/artist/3ceeb2a7-1489-49c6-9fd6-51068adfd832.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 0xe0d43b23bfbb5e4195facafec85968370022745dbb881c9563df92d4ab8cf6de. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/FR59R1929836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4f0f15c599c8cd957e95820c9cd4092a90c81e61741ab6fcf178fa3197ac709. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/FR59R1929847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79b44215017badb13bfc533d4190590d684f5d116a0575dd1ac0a40637d6d68a. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T07:39:41Z), 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/FRX201997618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6f5b58096ce929220ac610205d53d4c41972554b00f41a3548003424e814fd8. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/FR59R2054876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3583644b8d0c9639687a1c832896f7442a74252d08475fd1aca72d8e01a1d1b9. 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/FR59R2054878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe215194abd2b6e4cdcc51c7115c79cdea32434cba6b107f8c93a5770c07f318e. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/FR26V2030267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7620f7a1d3f77754a02145b73e033dd1c81438a80b5c3402f4698522e7b29822. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:36:47Z), 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/FR26V2030268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d6e1e9aa1d0a1dd68a8e4bae3803600461d1110fc9e1c2a4325d9214a62c0c2. Chain 2 (Bitcoin): anchored in block 958531 (2026-07-18T09:39:18Z), 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/FR26V2030269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68f05dd2ee9cbde3612ad45e3c61fed9ab8e29429a193855d1e451c878afcd7a. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/FRX762287932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36e08e73d7b95ca3c7124d68a338f8e29a86020a2bfa0167ebbece72f4f9308a. 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/FRX762293425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf610b76c2a07c2cf1cf66ec6c1222614f91695ee7816e6378b56e9ceb7642893. 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/FRX762293428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7ed9ea7f435cdd08aff5a15e9e235cb4dbd13d164c4ce2dee540d0b48326c91. Chain 2 (Bitcoin): anchored in block 958514 (2026-07-18T06:54:37Z), 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/DGA052304618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcad6b1e23b54ea919932aa46e05178a8a5f97190e9d16e1cf35877cc60e96a81. 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/RUAGV2410328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x302be54f9173591933a27f87d6032a6d0d74ece0736ecdbaae231422881dfd5a. Chain 2 (Bitcoin): anchored in block 958724 (2026-07-19T11:19:01Z), 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/RUAGV2410329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8565ca2884723ede1d6119f502c5ff788973beedc4b42f23f7f82223e8b96602. 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/RUAGV2410330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeba6df788eb46306194e739bc353621f47c8a527f7cbab71712e1bb690c97a78. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-20T00:26:56Z), 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/RUAGV2410331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20798154d1d327be76ea9a4516463851b805f70cf58de51a404d685732d5daf8. 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/RUAGV2410332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x274e3249f19475c6d86d28ec1ccfeed83cd13646151dcc15a9319360322a1a0f. 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/DGA062011027.