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 0xb01c66aae7448095c1587787b6a092101bc3c17ac4c0daf29d5ed39522174673. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a74a9fab-1f24-49e1-ab33-9864a11813eb.json and https://artists.proofprofile.net/proofs/artist/a74a9fab-1f24-49e1-ab33-9864a11813eb.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 0x997eea4d8fc5beee8c24004b50bf75560c0eb00d3aa96202d8f3f7b1b8210e17. 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/GX53U2591793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cce603f7b33f0c592f5ab0a3586e73be3c743f2f5dabe2545c17c87e47d7c7a. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/GX53U2591795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8997745cdbd7b46e6f067fb7da5438d3d08b3f93874f093eef17fdb4039b0618. 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/GX53U2591796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e2499d65e75a3dcc1841bb48db4fcee709e43a641dbaba21017d81462c473b2. 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/GX53U2591797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8f94992e73370a920fc3721c422b8f58cb70c97901ba50c80e5373231cc14aa. Chain 2 (Bitcoin): anchored in block 958816 (2026-07-20T03:51:05Z), 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/GX53U2591798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1223fb684952889c50cc57205923fcadc7cb9aee86a1c38a9b9beb099d7f6c53. 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/GX53U2591799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8112d00dfc08f9a7e9ee0579c6fe980464d6fce2cc48d0bcb001ce1a55f8f3b2. 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/GX53U2591800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbeff1414df23dfae34d59b53a707caeb5c040675c3189f7a9b4124c2f0701941. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/GX53U2591801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5ffdaa663923f8b36ce44797480571fc93e7da8cac720971937b89357f4912a. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T05:09:34Z), 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/GX53U2591802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab16d4ea10d800437468d23ba1f8b66cbc35a385021ecaf8f1c2c0668b754a07. 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/GX53U2591803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1df9d334c1ea0ee8e13ed20a36adf3ac0f40789cf04131bd6c9d30543eb4cf4. 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/GX53U2591807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f78672d43d0328aa9adcf7531c26f9c03da8dcf265ce1d89a5662973bde7fa4. 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/GXHAF2598615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc664422ae621bc5b8f135c40ab216154577fd3ca9b08cf301d72eccb9cbfc045. 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/GXHAF2598616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbc7095a8f18fc6b285eb5e8d27f0e79e5e3c314b7abd76d8a3653ca50a1f042. 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/GXHAF2598617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fcd0d09646d22f45150acb4b061219f14e41479fe52be4e162fdf205c4552ca. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-19T22:59:45Z), 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/GXHAF2598618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e4c9d4bb497a3dc26fc2e79ea185775176cb918bcd1ec5880909689636eab94. 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/GXHAF2598619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07f79c635a89619111f8681f2ca479014a624082022192f43180a42469affefb. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/GXHAF2598620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ebd706f210c052dc3968f5de67c02b25b98759732e0df55a9cc0ddf0c09835c. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/GXHAF2598621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48bb0643ad688f289025be235eadf195f0aae8298bae9c6b46e91c75921fccd2. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:33:08Z), 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/GXHAF2598622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43c85e2dff789608a0b10c107e58ae8dbdd8ad7e8cde2c2216222e41bd629f2f. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/GXHAF2598623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16e6756c500a8458e0523d332e3c5c96d7a3f77098fc87eb6c32494687cfe8c6. 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/GXHAF2598624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c1a4b9ac208a96c38a7529ed5618958370cbb555f0eb43983e211cfbbe3bfda. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/GXHAF2598625.