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 0x0cd19e3c9ab7606166a2e9bfa49b70082abb21c04cbe63f1825e3103398d3717. 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/1645a5da-3055-49ee-93de-faec1769ade7.json and https://artists.proofprofile.net/proofs/artist/1645a5da-3055-49ee-93de-faec1769ade7.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 0x0eb50e0a135177bfb6d1de42bc99eafdfed2c252869fa8c79a36d8b30ae097f6. 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/SE5BU2563345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x245a0a077ec463d63ae27aba528ffd1f9fd9c2546d62f7e9ddb3ce274d5b658c. 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/SE5BU2563346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07b6d333fc29bcf8ac8eca24d837069a3d93d4a2fc79551459b644417a04f482. 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/SE5BU2563347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1947c89114f791b871b28a298e75a8d8955c1df7e14731ad494f173f2ace9769. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:40:15Z), 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/SE5BU2563348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc769f354113d937a61b8f45a00dbd7c51fe129818a724d7802c9c86c274a5b0. 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/SE5BU2563349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcce53731f2902223d5cc86b70d7c2db2b1ff09e16db8cb3f16c320c9e3cc674a. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/SE5BU2563350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeccb505733de4933537f20d3d39b2258294a6c39db773a2c5bb5c87cc097f06. 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/SE5BU2563351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf8e8dcce1a9ceb8b25cf50d31a34c19a75c322740d743b4a4ca66c13708815e. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/SE5BU2563352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56dc10684a34bb1da2bdd7030c334f71645e4a502c0322d06301ac4a200c8e43. 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/SE5BU2563353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ef361e14c7aba126a748791fa1536de456d381dca0562499b4cf2da6976a90e. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T11:11:16Z), 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/SE5BU2563354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb30edf83e0b39485cdbfae31b6951533b26450cc8b7397afe3e8d0c80e848b5f. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:15:07Z), 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/SE5BU2595384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcad05568142b0ac240ee7b360d97edc813844fe008a62e762ecadca804cc757b. 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/SE5BU2595385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c14962eb85848fbbf59cd4e8c802da2fe969f2bd304132b64417dc6f1bf791c. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:06:10Z), 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/SE5BU2595386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6070e469cc756f8d66ecb9270b8f6c5013073bd5ea72af3b935c748e5e978a9c. 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/SE5BU2595387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b8d08136c73108e330e7fc28b65c3066fc175c3e74e31c35bb55402b5ee3b60. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/SE5BU2595388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48008e5653e1b08a5d7d41a4e9936ca7cdd90588570b2c6cc0836848789cb184. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T11:26:54Z), 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/SE5BU2595389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c0863d5dc75f9c84a95229dd27c8bbc0eba54774de699ac7de45b35ea0a3bcc. 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/SE5BU2595390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8d0c73683cde2902029726d8f0d397335800e158ef0f9d2705559b341d33377. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T17:47:41Z), 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/SE5BU2595392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x020716c311f906ba1f8096749b29270c6a9af0013fc01dfdfb5e3b3ebe144208. 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/SE5BU2595393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2dcfe2c2cf4f5829ec72693fecd293ba7122dcebfd86bca170f57eeb3432610. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T21:27:09Z), 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/SE5BU2595394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x326cff4af69da112a56c3afe4b48552358aee930e59e5a194d6b124f8f2b604d. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/SE5BU2595395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d9958e4c4c7d482434e5a9bc67dc213ce312544346a264dd5135d58f8419ad3. 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/SE6XY2543248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcdc5b9e80eb6ec34421cc01c2c24497910fd9872e2183849289f5ec99aefd9e. 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/SE6XY2543249.