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 0xe8c4b92e5c18f5ce37e906f8a2b9b663f7c5d89c6ddbe148df12d3c92ed36fb0. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/95fcd716-05a7-47f6-bec6-ad3edc1d6165.json and https://artists.proofprofile.net/proofs/artist/95fcd716-05a7-47f6-bec6-ad3edc1d6165.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 0xf0d6ec3c33576fb17639453d9e9b1a6cd722d3c1902507d60d32a1fb51613b0f. 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/TCACI1500480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0039aab9ce9efad1ac696459ecb751579f6685da987699855f69ff31e6f2c2d. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/TCABS1345183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5fabc281992ca032521db70f352ba1841d3c82b9af5a95f6141b00139151554. 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/TCABS1345184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83811c7177f11aa89559d1a0d881e1599271530db0bc1955ce29821f48fad99d. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T11:34:14Z), 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/TCABS1345185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12a09d1f837e06bc4e9c1f5c8c89f551115afbc51863039501b8cd977c15f423. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/TCABS1345186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda44d3abb34fe81f16656a0619164ed2194bd91f80e89a74fe52759da8e9b06a. 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/TCABS1345188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f30a194ab5981bd336cd7bfa026ee7c26cb2093b3ab33482b98dd23d81f2ce3. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/TCABS1345189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63a017fabf182b228735dd01e9b448311d5c1d490b3da7106adf36a1ec76dd9a. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/TCABS1345190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16b15d50c8cbea71a88daa626d5735f7a4b252efc598a6beacdb98d7aa6c2b77. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/TCACH1545750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d026120672fc9ade8c2bdfd3fd6c35c9c1d1a28220a66d2a0bee647959d5f97. 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/TCACH1545756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x801c10b5a8600a2465b1112078361674d3a465cb29e8a69fcf22d673d1e634b9. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/TCACH1545757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3bc5f9c222724c9c5f27f6d8feb28d1b746e3cd21ae8466410e63ecfc9de6a7. 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/TCACH1545758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58398532b997ab6d2272f7d46d7d18435e85c6152446505cf3ee711b40179d06. 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/TCACH1545759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb936f571512613f5e3572935d967a4e9214365498d525bc7d063542efb4e64a5. 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/TCADM1815209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4eddd2bde0974850e2e89657dda9f732b1a75854d15750f594b2295b0c558cc. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:37:03Z), 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/TCADM1815211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee62a759b6af8daeaac691a7a9d09e4ee928817754980aca7d263a4b724aa942. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/TCADM1815213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95c002dc6f9c4029e7b8b6767881a4f8923f62259b0f6ff64286dd9d42f1be4e. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/TCADM1815219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x818b0a20d25a5d33d8367a9a6d3d32518f7be6861735652c84349cf2435f93ac. 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/TCAEC1998656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cc37468803b9b06eae7226124ba2da2d2717a78f0bca3376dd45ead9239eace. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/TCAEC1998660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dbe7d162d28f53db2721efd20aa2fd61cb0162d52422b85f6d8fd80afb48bf2. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/TCAEC1998663.