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 0x121b573e357a83eadcc136ec58d8f72a75c9ccd277efa6ddbaee87af8e84ca77. 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/67711207-f520-4519-af1a-f70cf1ce8313.json and https://artists.proofprofile.net/proofs/artist/67711207-f520-4519-af1a-f70cf1ce8313.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 0x066be5e073a9c8dd9726ddfd60b071f2df653a7a786a85f4d01c0d5067b1974d. 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/GBLFP1858806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x066be5e073a9c8dd9726ddfd60b071f2df653a7a786a85f4d01c0d5067b1974d. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/GBLFP1858806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca42a71597bd3f4ca6965ee71368363fefee17108aa4fd83b1b2706fb06c637f. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/GBLFP1892640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad3f2900de83144d9f56f746c58c7d0dae874626f6f47a65da267aa129ffd9b1. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/GBLFP1892647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18600748cc5e997499053200b6f891790bc3bd8b7d87d904e123e8db187a1204. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/GBLFP1892636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe232aae74db1d902104fe553ff15c712c7fcc68a74eaca6979e4b46570f38b7. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/GBMA21913087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe232aae74db1d902104fe553ff15c712c7fcc68a74eaca6979e4b46570f38b7. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/GBMA21913087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e7138e0a43632c082c3e3f96053e627a88b6f389b026940edc1522d6c11ae79. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T20:20:13Z), 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/GBMA21857459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43574c4d36a68d3f947a8a5c93f8c495e2bc5f1ec2d143e9487ec2ed87d57d09. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/GBMA21867680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43574c4d36a68d3f947a8a5c93f8c495e2bc5f1ec2d143e9487ec2ed87d57d09. 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/GBMA21867680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ee3fe59fdfd5526d5b63118ef0a10e3e23a27903e60865a5903e3f511ef7d72. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/GBMA21868851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ee3fe59fdfd5526d5b63118ef0a10e3e23a27903e60865a5903e3f511ef7d72. Chain 2 (Bitcoin): anchored in block 956713 (2026-07-04T23:03:25Z), 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/GBMA21868851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88accd820130c4335f31bd335864fd9f10669a8dcbc6aceabf9117fce50d24dc. 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/GBLFP2041628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e57f35352f4421276f8cd25bfa1d8097ea2fac850adfe3391934cd88e918753. 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/UKXN22048487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95e2abe024dbaa07c09c03c95ef72c89f429b4ae0b85dd20122568c011f1004d. 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/GBLFP2040593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77bcbf4fa2b564717ffe87d246b08002d0ec207c6eb17f6a56b5ebad1f19933c. 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/GBMA22096570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0cf114dcf7fa1fe237c9b07844710494c247838b4a3bdcbbacbbb4682fe0b08. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:43:31Z), 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/GBLFP2040592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf06115eb478de25629ade6b5ffaebc43ba432f96d29d8fb71b7847a4e53ff551. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/GBLFP2040589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e57f35352f4421276f8cd25bfa1d8097ea2fac850adfe3391934cd88e918753. 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/UKXN22048487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77bcbf4fa2b564717ffe87d246b08002d0ec207c6eb17f6a56b5ebad1f19933c. Chain 2 (Bitcoin): anchored in block 956748 (2026-07-05T05:55:59Z), 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/GBMA22096570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75ed10271a589ebc16a3a3405990ff7f53fc44eac014bd62d8264f968d3fc4f0. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T15:07:00Z), 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/GX53U2024668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf98d8295a022183bc9b92e0241f0627d513b9992602fb9b34b673f78b369bd32. 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/GX53U2069588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x082d79a9d92ea42d321c3e6f119f87ac1200c82637d33e36bd6ff2fc766ddada. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/GBLFP2211847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x430fbc80ceb389f4e2f45f33d9c32f4a5708d1472f1c125186ec1f2b41ccae3c. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/UKXN22389947.