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 0x21dbd66a429b3dd0f7e5c565f7c272358c34708f567d2564b0087ac0a0a9cc8e. 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/aad3d21e-709b-4dc4-a182-391108983694.json and https://artists.proofprofile.net/proofs/artist/aad3d21e-709b-4dc4-a182-391108983694.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 0xa116a5f446dfddf62089a32ce41ec604c434297db6f2df977f70f5652c34b995. 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/FRX201930704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27708a48a2d6ef0fd75a893065be881bb31b4890cdb33bc8d572b6bb84e9c005. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T13:39:11Z), 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/FRX201931180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c1021f94c967eb75d6f01524e14a64d87302123e50ebdb3da7dc5dc15b64b06. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/FRX201931189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27708a48a2d6ef0fd75a893065be881bb31b4890cdb33bc8d572b6bb84e9c005. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/FRX201931180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8aa1dfbee8788e8d83b97022962a7dc8f0d06d8bad9d5c31bb9bf3387c47f8b. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/FRX201931183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa79e5d75fff96339023e6493f4cb3159e7081c590c3cc821ad7db621d9aa3bb8. 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/FRX201931187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x287478782c76214b2d0a954a5cd1365d3337eb19839b07953f38adb0482a5efc. 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/QM7282051675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc85184254a25a9b3e444b2492718f1c9dbc1ef64c95c667534c63328d88a9973. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T15:28:11Z), 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/QMBZ92033454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99b0219d4f58a89da1998dde87b2a3ce557e79c0483286d989c8117be4a3481e. 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/QMBZ92052013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95249a6ea6a5a67060a83984555610e1820dff509e27d6c53990978fae949f71. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T04:47:49Z), 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/QM7282099124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3168b93b7219fe381e5e4b15d7d173f4e8e442d7ec9cde792c17f4aeb9846e08. 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/RUUM72100589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9d4f161e87ba1bd5967050f7d204b111e1de8690136b5ddcb31839f4438fb86. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T03:25:44Z), 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/QM4TW2274270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf580b27bf444c9ef61c51d0a5937148001fe5b773f78a11cb967b1cc8a64e10. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T23:03:49Z), 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/QZMZ92275462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5ff45979082055cdc7225335c321e4aadc4ce027c813a09bd6f115f25e455df. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZNJZ2286561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23828e753b88e564bc3431c6ee4bdb05c3524d693e0e10f9ebb08107ee42974d. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/DGA062295318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d0ef1ab4b9c8b17f3bc12f86f79e283918c3503863f31fdb6a585080fe51bba. 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/RUA1D2347592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa07836c202701c9a731030c31579e67982aacdc23cf8ad7a4d9a9229b9791b75. Chain 2 (Bitcoin): anchored in block 958696 (2026-07-19T07:45:31Z), 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/RUAGV2302045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42828b6449b543fcb7a2684c0b4744b507ba1286f2f29314d025a989982a57b8. 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/RUAGT2322594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10ccd6ff034ddd325f868b710108ff27c208c9f20ec52c3dafe15c609b9cfa54. 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/RUA1D2447726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bd47007313944f37d2dde94042044a467f483719eb9335dff329e0f011cfb8d. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/FRX281991375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf424329c0b4c71e7956dddeaa3624a471f9a23d562c9c4b48795c125d0895871. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QM4TX2175780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa11c28a6000e6dc7f81b87683c46f4a28e909a7e32eec50ccab0ae18dc1ee004. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QM6MZ2368345.