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 0x1b6f09b9eeba0134694b4dca45a3e127a4989a7c006c9ea0d1a6fd5e94223acc. 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/e2c992a3-983c-4462-9515-b1f66195a823.json and https://artists.proofprofile.net/proofs/artist/e2c992a3-983c-4462-9515-b1f66195a823.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 0x24eab45fe4103b98bcb0f5849886e369f34324688b61eac74ab857550cc63da2. 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/QZHN61961982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe464b8e146c03a72b51a3190092cd62fda18506cc8e1a173056e8fc562b2392f. 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/QZHN61961983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc906a35a98dafcf4ef9e89814de0988d8873a08b46a5ad357d9925b3d4bb2161. Chain 2 (Bitcoin): anchored in block 958625 (2026-07-18T23:11:57Z), 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/QZHN61961984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcabf35338d2bb8183a8bbc484493f732aca59a26caee898fe3fb21b939707b7. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:36:28Z), 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/QZHN61961985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fe4fbac019eecc05ca7116f0942aa45b65b75eb1a5c894c475072c68429ab5f. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/QZHN61961986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f4e3256fb9943738981ac8072df73a4356097562c1822c65d22a1e2966e1d83. 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/QZHN42089444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x632aef2591058eb03095b2c374a637ff34926384d6b5f05d1e4a0e26a07d3c6c. 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/QZK6H2052182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1d96e9f373cddd0ea54e6ee25f12abd9242739f84dd3ea7c33f5b6db7521f21. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/QZK6F2035143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30c1865b313a2ff5ebbe85aa08c37e9e71d65abce905406d3d9ecfcc7f2c62f4. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/QZFZ22255763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95bf07af9023f15605c22f4836b72a862cdd05439ed5b62c64eccfcd0386e42d. 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/QZNWQ2206346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x005c22e99505c1a312ae9971637423fa0a31a68431aca9a876f01bb986bb50e5. 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/QZMEP2340818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf82101d5cacb8299a5b8a5d140b9198c432a3fd602dde5557f9325d3042d711c. 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/QZMEP2340819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbba08d6cbac2ce4a0ee40a81cac7aab8dffeeb7876d6a20baa550c5e3e15d7b8. 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/QZMEP2340821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f2096b67999705b32adf7fb352ce5c46ea6c812e68fc231d3260f26b24eb9fb. 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/QZMEP2340823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d740b179cd39ddde0804f5d1020c771b04d9ad9886c98cf6bb62ea295c2c02d. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/QZMEP2340824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc14bf4ae77e82cffcdece583a994d15a36d60b65a32251ebd578b73f1fe3aaf4. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZWFS2329872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14c662f60bad87f574731817b61f3a65b47811353574b273218156b980f38537. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/QZWFS2314774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32df41445a8657ab27efa10d372270c868fdd80a93f7a7b7276639713ee0fdeb. 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/QZFZ32439048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5be425a24c36a2e4f4b4128d399fdd98aa8a3dda55ec3cefb91748a5c0c8db16. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T07:35:41Z), 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/QZFZ62453949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x271ec02e444e23ae09e6dfad7bba534d2d3f3e330580a20ff3fcb10c972c7a4c. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T09:26:52Z), 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/QZDA52498427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7789b746c721cd9c43641df0520860a863c90c873202ab81e6099e58195af8f. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T01:56:30Z), 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/QZHN92445728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac630507d6f3046194fa3144dbfa2e593084f5467ef3b6a760050464c456d2f2. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZHN92445730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fac7f94a32268d45c5ad26b58af30ca81e71b4b41ecf45cb838b0d933078dd5. 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/QZHN92445735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f34af9ac22eb5880000e4aa130cc08cb000b0301ffcd5909ad26798167e6b5e. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T13:05:21Z), 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/QZMEM2489906.