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 0x15218868686943100285554c3f0d9ffac1462029aecc6f9d75b2dbba67fbf8bb. 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/db4a1a89-4b3c-4861-bd9d-4b634492d508.json and https://artists.proofprofile.net/proofs/artist/db4a1a89-4b3c-4861-bd9d-4b634492d508.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 0x58111efff221f849961e45e3b347abfca75df1f91fa9061c3e8e0f401eb89cc7. 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/RSA221601038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe1cf142b97f780d0b4566d06d691c5b86297e2d33d975174bdb770200720597. Chain 2 (Bitcoin): anchored in block 957874 (2026-07-13T15:43:57Z), 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/RSA221601037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf52a10389fc05a3c9ad346b13c45fdba0bc227951d3e3b686f1a1432b4a15206. Chain 2 (Bitcoin): anchored in block 958126 (2026-07-15T11:02:55Z), 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/RSA221601658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d41572e68387f1b796e64784e009861d5beaca5b831184b9de1c9882f0bdbaa. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/RSA222090071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ca056f7fc3c8c02376a9947df420345108dfccc6b09aa689047890f9a722b37. 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/RSA222090072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7d7f924f46d6476176a44dc960b4353640a8d328489a68f3eabf2d39f341b88. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/ATAJ12200397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80f72dc7dcfe4640e47f2af3923e703c63fc44834026763775ecdda66fb63501. Chain 2 (Bitcoin): anchored in block 956620 (2026-07-04T07:11:13Z), 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/ATAJ12200398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe5340c88dc5ac0b04b4a26cc4c910944a98da351ebac6151b1bdc731ee4f10a. 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/ATAJ12200399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4147fdf3a0183f9dac72f53296339cfbf0ef3ac06e97f2c042488bcf4d7f3d4. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/ATAJ12200400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf62a62d9ded00d2e59cc12030047342a7117c1ae7450e4258d552da0a1f134a. Chain 2 (Bitcoin): anchored in block 958197 (2026-07-15T23:36:04Z), 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/ATAJ12200401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d684e9bbb3c7742ebe253a2ff4160f6b298181680641f5f23a470bb3323ee08. 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/ATAJ12200402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae00b5187caf647c0efd5238f3bea64350ad3462f04ffffab37c6c162e6154e6. 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/ATAJ12200403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d597cea52a36e015647e8c3567cac7f948ba871dd8747d711814819329b524a. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/ATAJ12200404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e35d8eb779065a5a1623334729ec10faef46f46c72f4b9f1c68e214f2fb5810. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/ATAJ12200405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x587e2bec1f6785e187117250a5d0786f8791961aa569839cc38fc6e03c92e24e. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T13:22:35Z), 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/CH7812231709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8ae82aef33e21528ab7825140a3020076491abe63e738c65c7f529313550407. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/ATAJ12400078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc78c3fe06d660f31106dc0ef10ab8af058f8d4aecd9f947c6493852f7a18e76d. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/ATAJ12400079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fb4446455d28be93c4d1d20e8830e5f4f01cca2bdffcc2ab572b6d7a0c4e0cc. 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/ATAJ12400089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e8eac5a9b309b4a0729bd55a9b14d3e1d421c7a6ef7cce20e004b7fadc1e2de. 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/ATAJ12400090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x490bc0522ef0e24ad5eee085392365b3b37f9408ab53efa74121cce67798d0f6. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/ATAJ12400086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00040766ba483622b73a3fcc95dfafe598708f3269abf3dfcba5e0e2350418e0. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T15:24:36Z), 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/RSA222312520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20427574caaf858716a532a17f3cb25513d83a6d66afcbe9212ec0dfed13eb03. 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/ATAJ12302833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaab7e23cebf2344233f1e9f1a3e0a02fb6aec9376b90c5e33da19769ff2b1c1. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/ATAJ12302838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94425210f2abe1e6de1c9921769a5a9ae58442515a37307fe9a7f63ca5377261. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T13:52:55Z), 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/ATAJ12302839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10c6512ecbf3c7b882f38d53b5ee1b727f9470d8eea2dd03681c26722ab410a9. 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/ATAJ12500700.