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 0xdce1d64046e2cc73cd6b253c2e5f07e49c9d562cbc5df1b0267cd12dbd8eae87. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/94f3f787-ce11-485c-aa34-012661654af0.json and https://artists.proofprofile.net/proofs/artist/94f3f787-ce11-485c-aa34-012661654af0.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 0x90eadb8da3270f3c9db11774251b4b2461a0cf9e62bd5c88744fca9c252fd746. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T13:44:50Z), 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/GBSMU3161421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ce6fdfd87c5f95f376158a4b966fa0d298523ee808db3a9335a601399ee6cca. 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/GBSMU3161377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0321a96130c3bc349173797c7bfb233adb1802503b88e25690be7cb71f96536. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/GBSMU3164019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3f1ef21d714efcee951419eef8b8f1a310ff8ad084abceb3a34c6b2145af371. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:00:38Z), 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/USDY41770546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fa0087ca4bc588a608e18831ca8a3281c9ec21d0da76e10016774de0a4bf1d1. 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/GBSMU3161392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79eeb2acced2047efa7e1ca457042b284b32885a90e3e5a377fbb0697fb780de. 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/USDY41770547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ca77e04f462be6607190f60c98f004d61f38111127e45938f4dd9382683703e. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:42:04Z), 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/USCGJ1790510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcac80b6c42ec6a60b1a3c1d964bcc81c5be8e19eb42aad58306c12d0ab064bfd. 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/GBSMU3181522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cb8f25baabccbd52886e518a23afac8680d95051cbd3f3296d97371b8a7f84f. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:26:47Z), 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/USDY41770550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0382b1e07eab2a4008a1e3755bb9ac1664718abc943e970ec3c43973fcd6d557. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:01:06Z), 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/GBSMU3164219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf17e1f461a9e177b630fafff649876e004b09887aa5196b2b1a4357abe7adb9d. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:40:03Z), 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/GBSMU3162377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda91e7c52968be5e9808775830184409e12c3390e69cf424de5721a5fc3754d7. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/USDY41770554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x265d457542b85f4ec58851dc7192d9ca31138e8322facbd0b5e6389fc8e61d78. 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/USHM21645768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1af5185c81ce1b5712eefeb65737fc603e88d4d8e9e655809577128244424fc. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:12:25Z), 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/USDY41770545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xded1769b1f057eb0572c09274b71c5a0283fee3abcf0c34a5b51fbf4e34ed427. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T05:55:09Z), 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/GBSMU3183892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8384d5c02a1a883c8a8d0da89fcf00dfaa2300dfdf033c2fd1c3a5592769cfb8. 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/USL4Q1708291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb717189f03850a015600867e2e3ea6fadae85ed396c9ff3ea2ec82e0e532322b. 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/USL4Q1708300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b1fdbcd5c7ca4ccd9e701c5eb7ac514d736d23751875c74259793545a8fefe5. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T09:02:18Z), 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/USHM82068477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0ce8aeb4b13baddfba909100f6d86d8b00342cdfe06e41a840ca2bf4a61b7f5. 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/GBSMU3227051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac00a2a74a3383847eddf7f0780a1ae8ac55e3dd437a2ebdf35f2352fbe136f9. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:44:48Z), 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/DGA0L2327547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75f1cd4e6cb939bc2bd53a3e6b0284296a12bb5883a25557221a882b9dcd0b20. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T00:35:28Z), 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/DGA0L2327551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x103492e730670cc48aba7d2c8651a15517c68a65138e593d25b20a342012495a. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:00:42Z), 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/AEA2Z2400718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x195bb6d394c0ac3ffc57d50819e12180b35378fb57c33772dc75c042a4fb1323. 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/RUA6Y2501446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54415215f6293f697158eef17306f785175682a48f993660ae5159ad042d784a. 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/RUA6Y2516735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca58cfb92004d276018f88c0992206a6b725455acc2cfc894a66b9f824f973c0. 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/RUA6Y2530397.