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 0x925a71941aeddcbddf2c6ebafdef721985078764ad0b4163bf2e4f0a12ead1fc. Chain 2 (Bitcoin): anchored in block 953674 (2026-06-14T19:07:16Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/60d58b52-9854-4af0-819d-efb4671c6fc2.json and https://artists.proofprofile.net/proofs/artist/60d58b52-9854-4af0-819d-efb4671c6fc2.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 0x84e2a43d79e9af2d52db20e67d9d13b4f181ba0d9e61889df22440e53e2faf99. 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/QZDQH2417467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42c0076bec59bc9aec0c2cb826157fd7beb03d7bf6aa2d3e2cbe2e77fb28576e. Chain 2 (Bitcoin): anchored in block 957796 (2026-07-13T03:24:42Z), 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/QZHZ51949109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07bf0435da2d57c303e8adb8ed73ede67e9204934e14489763c0767d67224b55. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZHZ52030629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf9902e537ba3e1786e5d25ea098eb86277f153c5226e50b024e26518426994b. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZNJY2000670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90d8cbd522f82b5735c7c88e9f7e875c07290619e51492bc79c1bb55e82fc59a. 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/QZNFJ2212652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8290bd9143fc7afe4abb0b64d046a330c598e015d35147293cd17892fba2aae4. 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/QZNFJ2212653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbab288e8356512eba0a6b1b4962134827bb70a3bebd96630e24d6d5d7d3e7a62. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/QZNFJ2212659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a0b113ba4078b47ca0e1dab9f74ad0ca5a4bbbc6d6dc366d8400849e1ef6d8b. 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/QZNFJ2212661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d0f9dd15a9ec0c8fee2d6432749cc4b1e7677e432946729c4abe512361d6979. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/QZNFJ2212662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ebb9c710cb3b050d6bb5321b7a9235bd7cc3e94097d776c2176193bd4ebd416. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/QZNFJ2212664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa21f92bc2768fd2122fade209dac1965b7c387ecd25f145343af0089ed29e1a1. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QZNFJ2212666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x449997a32405a1dc8bcede9d981e95809dbe209432f595cbd48cb0be693e8622. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:53:13Z), 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/QZDQH2423274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef33ac2492a9fdb407016196e94140f8f7dc903b4887aa834a355546a89aca70. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/QZDQH2440850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ea05ac454bf4bb85807fddc6cef1cf0d5133107f9856c5187c822570f5ad757. 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/QZDQH2440853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc1e462564489fc29cfb1159a12fb608ed8a765b47db3daaa5869f101c771c0e. 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/QZDQH2440856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab395bef39375462c6ad1c33e184b3457c5dc2cc73667576e18956f9dc05e39b. 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/QZDQH2440860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44fbc64575ee1639f5813d0e8c16eb9f86b1ce92ac2a986d1562a86dd17a7be5. 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/MXG702500111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8449b3e7df7ffe1c19cac029a1924f37c6a83d274ad37dc5403547d917b1dc7. 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/MXG702500099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2559fcca8292827de313c4b2f766b945933fca9af5bafc270a8e5a85ce53cae. 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/MXG702500168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6e3c127f20a9c0e7cd57f12ef755f0cb7fbf021d8f5568e98be4314d200808b. 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/MXG702500170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe43f2d9ec6934244c33790db346ba665049b848eb409616cfdba7d4a8f836632. 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/MXG702500171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf8e77bbb2158c891d97ee03fdef116015f998cc2d7169750429ebc741f1036f. 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/MXG702500153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cd9d12c92d44a1d041ac86676c373a455ee10e312b271421cabb11351685b77. 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/MXG702500155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0978c354af67cfe00212f4d8ebca78879284a500922725ace1ac67aa1e6f1d28. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/MXG702500163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fd254478e73d1d6bc3dcad6bf79dfea7a38e259a8f316ad084b16246c18fbfe. 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/MXG702500184.