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 0xb568a7a38d7ffa3ee14d1ba0fe7ac10d4acce22b9ce16e13505d4671275e13bb. 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/86dc8291-67fe-4cf1-8c8d-09daaa25f73b.json and https://artists.proofprofile.net/proofs/artist/86dc8291-67fe-4cf1-8c8d-09daaa25f73b.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 0xab130f250c186bda8f404bbb3021b9a7f6b4d2b9cbe25d99638aea140538bb4b. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/QZTBB2536196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd46fcaae48754e76055c9908394d53e532e2bac8b43c78119b53a06d4ba4d590. Chain 2 (Bitcoin): anchored in block 958653 (2026-07-19T03:54:23Z), 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/QZTBB2536089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a158ec3c8fd05beb3ba93034bf43549009fb6d863562bdf342bd66e0d09924c. Chain 2 (Bitcoin): anchored in block 957780 (2026-07-13T00:36:44Z), 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/QZTBB2536195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5207bace363fd6c9786c63ec05a77d403523d3749daa3b1218957cf55457bd70. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QZTBB2536096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39acb5f6b8773e3e6cbb06197266921e248983577bc819e6368ff321da765e12. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZTBB2536061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a713348bb2da77a120d7730e95a75468aecd0ecc7f69ccec3d00ddac197004c. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/QZTBB2536062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19f80a40d727e3dcaeb2fb182bf2da2ed40c213b416a9262b7703e50de24f5fe. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-21T08:42:37Z), 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/QZTBB2536126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb21a3db74f2341e5c7df8d2fcaeb79aeb2632d5640d5fca3839048bc3c032b73. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZTBB2536067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ce5c12070bb7c9f0598809b880399e1e23f614714703955735a0e7fef800b13. 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/QZTBB2536117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe70f460321deceeda94f44ad81ac6c68b435987a45a1cf00959b96775254a6f5. 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/QZTBB2572607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cde6af26b1936e83a580d6c3c3703a0e4bfd09c6da0cf756fa068f39798de74. 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/QZTBB2536069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0a58a5d10e005e86f9cce4dec2c48109c67ee6dcd81c91de50d1cc8c073762e. 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/QZTBC2522491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x398752a280cb8e3ab442db87232d124b3dd9289fbd3eb8a0e2c24a23d16501f0. 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/QZTBB2536194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2151d6814a97af4627000f6f372bb59a37a03d0998e5a10ec3cd46aa2209519f. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/QZTBB2536187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1394726995600bbbd64e56c5975ee53ee4eaff18ecc8184ac8dbb5a6dd4b330. 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/QZTBB2539113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e18a63ae94c672740246f970dd8714d44c2d0ab2d8ac44d9664a2d79bbbf0a8. 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/QZTBB2536093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d593255373cd1b4affb5a4ddfb31861a0df3b99340aceef86546d8f7978ea8b. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/QZTBB2536102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85046a74c7514b40c01a7e3bf99d9c7b9a5e64e6639f7ec71b598c351ba29158. 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/QZTBC2532369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a85b8c8c675e8da641bd7b17f4809ce4cdd2671709d354a5c87f467a5bbe775. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/QZTBB2587370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x032103c0433d71eddeaa618d2ec7d439100658279a10bc8f659720338b38ac85. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZTBC2529899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6504eeff65714425e802031918a5fe2a01c66ed16296bf594125aa0452411c6d. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/QZTBB2584457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47a13b68b821212c276dca880050b762d9e83f7ddeec2dc82e09c217eabbd700. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T15:42:14Z), 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/QZTBD2542736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8141b9fdda56325e6f7f39b6d899aacbaed105dc5d654645232d597c2feda1c4. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T06:54:34Z), 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/QT3F62503015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x608fbd5bea812c9b3595a506517bf22ce916cc4c4b59984550031a9cca92fdb6. 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/QT3F82516327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29bdf3f7d916c41e1ba9e59dfcac6d9e4f03e99cc99c0ea39c3ed15b27bd3b7d. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QT3F82516331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05b104033842018cc3b5323898d4d8b74b320bb48035634906d104bb3b71a051. 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/QT3F82516334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x085ba235bfcca67e26a8ac2afa028bfb89845afb2995c44d889d5b754e6f8389. 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/QT3F82516335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x800668c9d9d3062f19cea41b272901fd2b3dcf21250d13cf3a91230239ceb1d2. 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/QT3F62561240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x053fcfa086ce8f0fc2c604f3a1446a02179c3ecd82a8782f0ff51cddfa7b658b. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/QT3F62561252.