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 0xe0c34ca219b96eef03d9955a8c9c8a5923029ec90cddfebd689ef6617eea2ef9. 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/ab578a91-3380-455e-88e0-9cae551635ac.json and https://artists.proofprofile.net/proofs/artist/ab578a91-3380-455e-88e0-9cae551635ac.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 0xc7e90b9160e41f1b1a42725dcb7e765fd1551dacff028e9909baf38235843c59. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/FR2X42077895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf6135d31dda2550f75247d431d87435597f035bfbe9e83041f4068db4ecc7f2. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/FR2X42077899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55ad179ebe7fba54a7de98526f021fa13127829b5f403f2bec209ce49faa09eb. Chain 2 (Bitcoin): anchored in block 958878 (2026-07-20T15:05:16Z), 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/FR2X42077900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0255fbd0e8d9ca854940f66131d57d62221db7ded6f08bfb4787579b2e2b8dcb. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/FR2X42077901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0ba5546bf584d11771a94245782c38d9917d8e01898bf07ccfa22119ef48cfa. 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/FR26V2002486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6fbcbb39f2b983052431d67087d1b808bad2c03bce3bb59d1a26567dfe186bd. 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/FR10S2140867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcea2b24dca47319d542880e4fc35b6863fc23a9665dbfbf4b77cd42babdf34db. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T23:49:25Z), 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/FR96X2115977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9f527dd0a7db95b00dcc5c17a93eb365b224999c72adb7fee6108bc4b62db85. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/FR96X2115974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94965210fa6339e99f04cba62a4f32fcbbc57110c6fc6eead1d2ef9ffcd1e453. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), 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/FR96X2115976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91388436f6dd8a91282a90a238870baed3d2c82a6ff86389eaeab08b8a8dc246. 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/FRX762146943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x161352c96b4b361e284127bce4515d837ef21e1738792490a8aee38c8d139de9. 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/FR10S2272466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x252e82bf916425f8792f40564e2aa3cfa7325368c514c9795b9696c425cd97c5. Chain 2 (Bitcoin): anchored in block 958828 (2026-07-20T07:54:45Z), 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/FR10S2272467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30a7711fb92104f15e1b1a67a06eecf79b9ab7dbf97c29f2228ed834e934e731. 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/FR10S2272468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f3382c12821a42d0328127b1d1b84ee4246b345ba76a819261235d6092b80a6. 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/FR96X2274597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x189082c1da73e7b300a1c97336cd864a1553c52c641c9922b0b02b6b64bf5278. 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/FR96X2274599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b8d46a968157560cc923d462eb8ed5ca7f16bedf4abf88abc9b2ab5256e6fc7. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:34:10Z), 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/FR96X2274601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a0905d299e89ea35a6436f0ab88bfbda9f058f9521cc33b95a71399d9ae85e3. 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/FR96X2274603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb655bd11d5f191f26ddf1d4d8d2e18907484ab3421fb68127ad39748b187f4ef. 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/DGA062228619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1c6df8df38a401e256009ce8145b18bba3dd82eeb03025a9ff4c2e83da20d15. 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/DGA062242479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11076a253a3655ec120e6784c5b6b1911e24c7687ed0b74cc96c35ef31b52174. 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/DGA082227375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9672b4ea5c16bd6095954eec773dae4677cee1a08206e1bfd2d4ffe97a4e00eb. 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/FRX202364078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3636233a1107ff76ac3efd908dcdc91893cfcc2fb12b2de1884c4988b04d0c87. 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/DGA0P2302914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb69b1e93d0e8c22e191121c7be098304a1a49cd77cfac9557c2d14aa91c945f3. 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/DGA0P2302923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2fe5430c2b47a560ab9d59d3786e0ee9561118ab6d33ef487a9315985cc4b6e. 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/RUA1D2286188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82279a9208efe7bae6bee2b750dc6196e71dddb46b147cd0d12fed58b2d6f1c6. 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/RUAGV2304940.