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 0x615539dad308f9ffb9bfef6dfa70040d607e1490f13105f7adb8e4e75e97f5fa. 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/97cd9ddd-bbda-429a-bb53-68e1442ac739.json and https://artists.proofprofile.net/proofs/artist/97cd9ddd-bbda-429a-bb53-68e1442ac739.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 0xcc38ebf329cd1f1af0f55ebc52d568f12502ddce8e2d74080a8ea650ba062363. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/AEA141554160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x412f6beffd9a259be788bfe6e5aa7d6c7a7e06248b4e2857d5319fc0531a6bcd. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/AEA141607815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff09aa3845c14efd963b8b693a2bacb39741688857b5f5acfdd9873fd6ee48db. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/AEA141802057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7144aad9d85b70ce9f27b935016e7eb8133be0b7d6a4c0a52c6ae92204f24d00. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/AEA141804998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f5fe84bcb0f56452908a6f9af1fd2903c55d69ebc06a3e55e9dcea045dda58a. Chain 2 (Bitcoin): anchored in block 958368 (2026-07-17T05:03:25Z), 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/AEA141807349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x665c110505ebf43b020d037495e3b8d60ba85b35739e1d3b5a860441a990e609. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T16:08:07Z), 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/AEA141807712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fbd77df0979298317abf6c13c7afee00eea97c6cc95dfc4d2cd9cc605bb942a. 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/AEA141901028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b52b38c42b8861e092a2b244e041770b053bd4be74b3150379fd9b08cc1554e. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/AEA141906623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xede866ed04326e6bf702bd8883bf60a47e92d4a258874f59f5af084e7953dfa8. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:46:48Z), 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/AEA141907213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d3958489ead40026503e84b321e64493b87e284cbb5d47a744fe2326832d26e. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/AEA142000173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4da9fc44a3c59aa004bc2714989e8ad8ad556ae8d9edbc0976539a31015f7dec. 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/AEA142005344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76b07d141661a8b1239592197aecc487369f6b66d23a7cf3e3eae1aafca051a8. Chain 2 (Bitcoin): anchored in block 958523 (2026-07-18T08:54:12Z), 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/AEA142211072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66568c7b91a86d2275e9bea62c43daf67a8cfdd41ba6ccec0f755dd036026c95. 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/AEA142211971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8b009a18eda1f0dab0707a6ebe6457c29bee4f57e44c2de00392d85fc2c3bdb. 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/AEA142402432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b4fa986c69c2b55acda81ea89b20d099ef534660dba401d91865ce7b6393564. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/AEA142404364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1927e86bbd8d9b3d48a98b42549e6fef0fe408ab51ba08617e046b0ee6a199d. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/AEA142404888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2662b0a191ea02cc43d5b97db83439939806bb212552bd9d20c548cdd4780b0d. 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/AEA142502032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcddcd1a7773aa173f40471a9fda8ed53b0a686fe1c606c95c8a5da0e45620843. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T22:41:03Z), 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/AEA142505205.