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 0x0c873b801bdc9659e9aa774ac3923856aa9f91e55a71db65902e8d3875b69c51. Chain 2 (Bitcoin): anchored in block 953630 (2026-06-14T12:06:27Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/30084f9c-1cd2-45d1-88d7-8ad3abc7b83e.json and https://artists.proofprofile.net/proofs/artist/30084f9c-1cd2-45d1-88d7-8ad3abc7b83e.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 0xa0af61f9cce8a54178b76a173e28e9caca9bc448cc34e0b326d479286f9a970a. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/USHM21990091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13749082f513c550a16f0aff8376c5c63f5401d66899b9071e041e205909c374. 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/USHM21990097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b3ef5c3774bcaef780ffc4beb6e91874f1a1b1452aac565bd242879c17e732f. 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/QMTJ82000101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xada63718b8b14277a1de363adb2ef6396369a0b1e777b9c3de0f31073ee59458. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T02:31:22Z), 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/QMTJ82000102.
Turn Your Eyes Upon Jesus / Softly and Tenderly
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb01c814fef99d0aff9ee6d1e998791512a0f94839db3f67db14bda0d65b58092. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/QMTJ82000103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa1bbb5352bcfe4c3b24de42e82c00bd79d73743968a8dc2d9ac697adebd5b2f. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T21:34:48Z), 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/QMTJ82000104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f66837b3641c883995133a9ab93b83f663732e5f90773378ecb4b1432a527fb. 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/QMTJ82000105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0e0e0a50629afed422fbf5733eacf5a49917ad6337c34ae8b132c67447e88e7. 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/QMTJ82000106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fad4320cbc36743cc65e3b34f6bcea12c35cc5ddd1634429d8fd8b7a25eed18. 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/QMTJ82000107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc42138eeb5c3f3e4827b8f7ed24a8ac8f661c99a608ae26cea2f420af686468a. 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/QMTJ82000108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a5a75176ee030b188bb8212251832f032a376e2768760aed9ed580574133eb5. 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/QMTJ82000109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x638019cb8e2777be18324dbf1e9225a8d4d32a925f6c1222b9171c8d7f10bacc. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/QMTJ82000110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x505027d4e7da0facd49eabd197513ec9aaa40933e7bc39d519f4471bc8cc6147. 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/QMTJ82000111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e4183decb65bd6d5c37ba2d948a12f9da30a2e53c5f4c271663a0c42904a53e. 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/QMTJ82000112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x423433b17ba612dcb01737d58872e16241b31fc27979974594f352af6724386a. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/QMTJ82100204.