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 0xa3d988349a40251b663225421eac5dba45b566be2c68e555d8012ea9228216b3. 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/67f54d3d-7d0e-4959-b45b-77419b58b454.json and https://artists.proofprofile.net/proofs/artist/67f54d3d-7d0e-4959-b45b-77419b58b454.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 0xb83534af8971b6723945b13bc9a1c134374928d6abff24da9e7ddb159f988a8b. 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/YEA001601625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77d0ccdbce341f0de761627f8abee5d2740912f7f89559ab1b513ffb3a248261. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/AEA141505087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb705dc7730a4d2618bb034162fbcbdb8a6f1419eea51787f94196f81d4edf02b. 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/AEA141604036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6ca7fd59bb9d17a8ac672155434a6af40ba4fa03c20b911bae40cece2951a8f. 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/AEA141805701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf67c979aeebda9544a892bb4568fc46803d7763f4947285aabc2c172f613f4b8. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:03:48Z), 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/AEA141806905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44b990fa4a1dc363447590a6cb00ded9cca3724b4744b92a0d077118ecf6c430. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-17T00:24:24Z), 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/AEA141807196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51b1b6e61094f354702308c772885306e6a7c7da9bce1d47b9c50da2077e4c7c. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T02:22:13Z), 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/AEA141906004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b3526b690de5a310e53385aa26fcc45017d30229ae32b1d25f696f7ca1323e2. 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/AEA141904384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1798b9ea21b5d019aec044f768d62f250fcf43734c66a48664b617202285666. 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/AEA141906523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd650da35faace82b9a697af0f105fa911b5128af0d9caf2b4d650a51ed54468d. 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/LBA082000014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bdfc3b22070a8acd5e602b6fb4b00a4ed01dec3489088095d65e2e719854798. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/LBA082000015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x964475402043df0c3d7ed9fb9f020b35112cc92429c7ff886929045d9a20dcef. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T09:58:22Z), 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/AEA142003906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecc3a86207ee21ab1f0f9c5356204038fc9dbc759ccc583aebcda4e37bbd8932. 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/AEA142007330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaa6410c392af59b0c92df04d4901b6a5f9aa928254c0a09a58448511abc426a. 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/AEA142200245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42e8a0703640a6dbbefa7abd2166e9f10e0b1135cffd98ba8e0b41770fd1b672. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T18:01:47Z), 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/AEA142106837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7626e9d3e951b295d3a784049536d76c8b141f79fa27ebd55a6f41b0138c4494. 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/AEA142211716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb92463b03214edbf7eb59098091ca901a63fdafa3920fd00615906e9900f5521. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T06:27:23Z), 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/LBA082310810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8b5aa8ffd99093d42bba14a4d790f40ac7f9ed075a2ba87e435d3b6027411a5. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/LBA082310815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddfbd771dfddf05b7b1c405f39c69d400b43023a6e247e061a1219b3b9c59380. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:28:59Z), 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/LBA082310809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe959bf2bf5a21bb592e8d79789a1551c5889677c2528e7e496341586028bec84. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/LBA082310811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84cdc563f0b88998300aa3b542ae9ff3b7017945698eec3e3817aed5a2b9c4a6. 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/LBA082310819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeae0484656873d53105d188831f4485aee0d84690e8c912bb8cb2696bbb3e160. 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/LBA082310813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a1b83c02153fd3487e47505d89eea27a3ef491cb2a27be9c8b456e57acc7ee8. 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/LBA082400752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x240f4d1eb9c9a69d84a48ffccdd73edccfa111a07d85e2905b5e53e1127e4e99. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/AEA142504676.