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 0x604a0de17cd073068f0f3812e489c4274a69fabe0c0fd40f89789c2ca12e0889. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/736286f8-245e-4d2b-9ece-87fa0f55688a.json and https://artists.proofprofile.net/proofs/artist/736286f8-245e-4d2b-9ece-87fa0f55688a.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 0xa5da2bf23aabc3db00385cde7dbf50fefe102514e3c9d1aac0931d4a963662e8. 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/CA5KR2471353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20c9f6056b54eb3b2d77d224fac2d6a16505e51b64c51bb83e2655b1bc6dc9e5. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T09:50:22Z), 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/CA5KR2471351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54168a48951cafe7689339c2b8edb020fdd2be22b83e9026443aae57cd70d902. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/CA5KR2471352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a53745e82cf1995ca5c2f702eb70a8c08a0192a193486f6fa801b48974de2aa. 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/CA5KR2471355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x545ec64856e226ebb97658613187f70af071d9f44cf09f37e1390840eb35d455. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T15:43:42Z), 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/CA5KR2471345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61f48b4409cad004fbb2ddf524967a90323b4100a6895df09e9e48eaa87a782a. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T12:54:58Z), 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/CA5KR2471375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x508dc9cb4895fbaa9b4e06969e6df4c25258ef1f5b8e941178e52cc45419870c. 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/CA5KR2471348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2f958b4877fb6c667052ef08cc7fbac79e3577ace19ef1ccd2a2d09b710d752. 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/CA5KR2471347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf73dd243df9aebc8242be65aca600a42793c32f673b4dcd09b5537686e8b5d1a. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:00:10Z), 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/CA5KR2474653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f924e3982e543054027ca4d4659636d22d2b7fadc0c32d5832ea01122107ac6. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/CA5KR2474654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7244fc42064a31224ce95c38e33ea6c166ed2606fdf9a098d744fe02c91c3b55. 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/CA5KR2474651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x379f56273f00ce0a12423e40f903772b7f63909be26baeeb62a0bf369171eef9. 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/CA5KR2474655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2b7b0857f6e016920933ee995577bf052eb7affa7b8270e14c792c06ee21a32. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T10:03:20Z), 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/CA5KR2474694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33f1c2f193ebc767319439cfd956aa03028b9dac29e8047b57d6ad306bc027ec. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/CA5KR2474669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x646fa00216be5ba31becaf02aeb6ac1a06468715647df63bc6bbbefaa76b81a0. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/CA5KR2474672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4470b978f193b7d521b260ed296d8e990f8ccc1391f81be6b0d661ee2a3da6f. 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/CA5KR2474670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c9dab8a51214236e3859f604ba90ad2638c831b954104d7296e35463c57c38f. 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/CA5KR2474671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x607fa5325e337daf6949488b5993b1ce1501e188ccd4efb271d971630b703a72. 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/CA5KR2474688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde74a712041b5ae6b0bacc0fe9cb343357c52e5fe47970ec23064f724f201e18. 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/CA5KR2474689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0feba042cb15f1ac9e1d4ed334fcdc7f3a7456fad37b9183c0288e4b002e7e4b. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:50:08Z), 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/CA5KR2474796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6e9aca2aff570afe11ddf12de035822e7c8fa03c2498a70b5cc8c53c2739b31. 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/CA5KR2474768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c0b08d50c197fe1412a1768e1279f4d3a979e884e7f30b602c16f9c8b999418. 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/CA5KR2474754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c7b265a37a9bb6507b49363c5dab1cd7481a361a8c30e623f0dd435007ccdf8. 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/CA5KR2474755.