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 0xa12564a6a04cb9c5f4fb9c8d00df2b029925efb9eabeb27980c2500902abd45f. 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/f103a553-6449-401a-b1e4-8f91bcc690e8.json and https://artists.proofprofile.net/proofs/artist/f103a553-6449-401a-b1e4-8f91bcc690e8.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 0x2d6244d7ccaf0911c3c0f2e67c6f9e7fa515c1df871751fd0ae240966e3932aa. 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/UK8261900692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb496b712fd4d12f688785fdc17a4c3014a4d531921fcb9d050166ccbf128a054. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/UK8261900693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c923f89f75adf21e9f373c56bf3e5dd967ff2765c314bf8221d8dcc1b3d2458. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/FR9W12250482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x638469a92a27de1c1d2db1b315f1f28f8aeca7cf4594a2896530ec903d280223. 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/UK8261901187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04252b17bcf15571025be3457b4295e3b7d77ca3b29dfbc887911d88d9c90d73. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/UK8261901188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51d9ffeef926bf8b1856b0aedb913d6ef998ec8d70d4fac67010c540874e8eea. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/UK8261901189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f8e462fda232cb20ba27e9e4b90690edb1d9ffb77caeb17086bb517895ffa1b. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/UK8261901190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91453f85174275499f77d268dca2c41ccd857011de0eb27e69762642159659bd. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T19:56:17Z), 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/UK8261901192.
Broke Down At The Natural History Museum
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc18ade81db50b5b424c7c5a8f18966270332b59570d28a202787ddc64d6926ac. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/UK8261901193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x157ac6dab741837bf4c92f0da4a1e268734d9120ff3422978cea8d825e2d35ed. Chain 2 (Bitcoin): anchored in block 958691 (2026-07-19T07:19:31Z), 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/UK8261901195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6522e77e61f200c5cdd360e7e81525e21a9bdb54ae04cd9714db2eb9b615c834. 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/FRDX62401310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02bd36a852d029117e0f24ea39e224fbfc99c7c26dfd2a264138a8e4b541a2be. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBCMQ2300132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccaf4c7b7287712e6607d9b4c667614adfead3123f54182617ca2d6944607c45. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QM6P42032338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c923f89f75adf21e9f373c56bf3e5dd967ff2765c314bf8221d8dcc1b3d2458. 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/FR9W12250482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x519dbe8a80ecd69c6224fe9e27bdfa2445b04ec5affc4834a34ef71da89e50c5. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FR9W12250484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc768bbc675783f10361605b5ca6a79b98b36c6c699c2b6539a925d5ef7487c4. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FR9W12250487.
Scenic Route - The Road Less Travelled Vol. 1 (Compilation)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaf652e3d7bc82e255ca7ba1d10254cdb5a7053b8da708472937f69ee2897d30. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/QM4TW2265300.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b2e60dc62b9d342168fc78f90770d360ea711259bbd77867c3a96adbc51ca6f. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/USHM82499473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb88e8576bbb0e7c59d9bb7f9ab6450145567b1cd09f27387ebf45707c2f2a94. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/UK8261900644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98d1a3c93b70d644c2304e2a7c6d290baec9034d8e61660c0e9f523c40837f2a. Chain 2 (Bitcoin): anchored in block 960463 (2026-07-31T20:42:35Z), 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/FR9W12250481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7aa7489a9f48c2db6b3ef8fabf540d2ec01455056ced508ef5f6e4eb076aa078. Chain 2 (Bitcoin): anchored in block 960485 (2026-08-01T00:10:46Z), 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/FR9W12250485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4571469eab8504452350bac27ea5b4d0a19c9d8b1b88c1a78ca0fccaaaf6c0a. Chain 2 (Bitcoin): anchored in block 960193 (2026-07-30T02:05:19Z), 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/FR9W12250490.