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 0xf3c20ce321b6ec3819d859b4f0c5a193760263af83c3179b95768ae6cdcff02f. Chain 2 (Bitcoin): anchored in block 953701 (2026-06-14T22:16:40Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/76453bef-380c-48c7-b432-5330471df1f7.json and https://artists.proofprofile.net/proofs/artist/76453bef-380c-48c7-b432-5330471df1f7.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 0x883a480b5baba28d2e9e1bb058191519c7ecbbdde109ed08b8d5f62bdc299b1f. 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/AEA2W2473652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e16eac18f2423cd9e6ca93721d992bb04b80a52eb0c5353ea08d4a3ee54d6ec. 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/AEA2W2473653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5abeb41e70e87b1713ab8e6f79e47f08956669e69414b8f9618c0c5b5c664cc2. 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/AEA2W2473654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b5d73c2c05e83893c097fef1044342cede8ef0e7610875e8cd1f1a7e0dc3d7f. 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/AEA2W2473655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe048f45442946cc3ba97b3871bc26b72eb786a1c08c4a11be8a8d5d650c88051. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/AEA2W2473656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61f88730a1ed675c023306effcfe8407866fc102e8cfdb15111778c9c555b4a0. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/AEA2W2473657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad2d2015ea3d9ac045b5c70ab6a08ca3dc547eaa43608b314b2e84ca3d7156e7. 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/AEA2W2473658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x092180d8249d005e11620074a2e3647898bbfe8f4aab2d9d0514e8c0ccad00ba. 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/AEA2W2473659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x284893d7c6b01316732cf5cb6cfe22c7b461eaca7f54412e6803db6e61ba1eca. Chain 2 (Bitcoin): anchored in block 958506 (2026-07-18T06:14:51Z), 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/AEA2W2473660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f3bc06f9c8cf3317bf4e50029e2483d9fef6f42dad4df819108e53b369eca74. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/AEA2W2473661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1618059dc2d91efe242dc6e367a956368ed8cf7c60ba12c27a59f111eec0c0f. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/AEA2W2475913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c1a1e2c5bf0496dbb7c16bcfda59bfb35555d699a40cae8b0623cc537d73b60. 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/AEA2W2475914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e7fa2edfd731f4ce0963771f0e3c116f1417a62e6f5ed608dec662a41b5c090. Chain 2 (Bitcoin): anchored in block 958920 (2026-07-20T18:14:22Z), 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/AEA2W2475915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a8e1bd2fe289b8c8b81e23ffae12d1fb4137a62c0940290a6978bfcb990baa1. 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/AEA2W2475916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x204ee574c267a4905a135b68ad5ce06e30fb87ee56e2e6364e0c7b4d7c4c097a. 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/AEA2W2475917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x019b2604c79e85c119aef352e9e1c2ea9a0c2443bf625490ebb03298d8b1d60e. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/AEA2W2475920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75f5c2a28939f2ccf212afa2eb3962477b1426026482f3201e270caf593833bc. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T01:53:42Z), 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/AEA2W2475921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f314b4103fe3e43e906e827929931aab2d8a48d1f5040893a72d785597ccfff. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/AEA2M2464347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32f6608e6234df87b25d7512184d6076f269b95ce670be1f4429eb58e3a7a668. 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/AEA2M2464349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5031c80870431dc2c526e8037df19424f255ccddd548251001860f6135c2663e. Chain 2 (Bitcoin): anchored in block 958947 (2026-07-21T03:32:51Z), 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/AEA2L2402757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x551cd10cc4aaadd4603c4013c27f96e38cb520546be58d8c4274ffb246176d0c. 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/AEA2L2402758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3cb8445242b5d5fdc27ff659237cb258bd3c1aab34033925875348fdb1473eb. Chain 2 (Bitcoin): anchored in block 958963 (2026-07-21T04:02:02Z), 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/AEA0Q2445526.