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 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 0xe440584726f20d279187c61135f670c8bfceb70d72141d7e8d64608153563fb8. 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/95a8b5f2-ed8f-48f2-8665-0bf4bcf624e0.json and https://artists.proofprofile.net/proofs/artist/95a8b5f2-ed8f-48f2-8665-0bf4bcf624e0.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 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 0x9e0ccc3c920c45fabe538070fc2963aca03096b7ad3f8fba0779d3a6a1decee8. Chain 2 (Bitcoin): anchored in block 958422 (2026-07-17T13:35:31Z), 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/TCADY1898384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a7b80c1973348f826feaab78bf192c6ecace37fe8491317d526115144284e62. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/TCADY1898402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50270a4bca8badd89c1a2d05aa80b4e0d9f35e8391cfc6fcc148928560bb88ef. 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/ITSGW2000101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x588a0b22db75ed80c5ebafc90cc620b95db65ae0d9d857fd6e0b97dbdaf549b5. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/ITSGW2000102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91397433d7760bab64c3f1460ce9226cead937e104f6a30f46f7704d48b051fd. Chain 2 (Bitcoin): anchored in block 958579 (2026-07-18T16:26:17Z), 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/ITSGW2000105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc06dc044a7d99070a298bf7e628314f4e431a64fac19b3397e4c3b36959e82fe. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/ITSGW2000106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6eb13621279740819d2ea74e6b80edc829ee943f4e407a984a48d58a8a3d6f7a. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T04:55:29Z), 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/ITSGW2000112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc537a0a0141af5de9c690ec710ef59175b8aa7a750172a76fa6912cea1eb99e8. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/ITSGW2000124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe48a443a5e60024097577bfe2235caad74d057b0d645a195bb5903d7b40f3381. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/FR26V1621278.
I fratelli Scacchia Enzo e Nicola campioni del mondo vol. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5551a099434e3807aeda541b451ee4ef3bdb7b90667718da34bfdc95db2255a9. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/TCAGY2343912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcded1dc553b6c8a872cf94d9437350fe5ef8963689e8eff33e61115a25fa00db. Chain 2 (Bitcoin): anchored in block 958860 (2026-07-20T09:58:28Z), 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/TCAGY2343980.
I fratelli Scacchia Enzo e Nicola campioni del mondo Vol. 7
I fratelli Scacchia Enzo e Nicola campioni del mondo Vol. 6
I fratelli Scacchia Enzo e Nicola campioni del mondo Vol. 4
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7bb6909d4b99f715f9098060c62979a68d072094e98fac30b01ba0b8d32c346. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T19:26:13Z), 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/TCAGY2358415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x307a9b9359446afc44d7b60d7df759f646026af60e7899f3daefa8c35ad6c47b. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/TCAGY2358417.
I fratelli Scacchia Enzo e Nicola campioni del mondo Vol. 9
I fratelli Scacchia Enzo e Nicola campioni del mondo Vol. 8
I fratelli Scacchia Enzo e Nicola campioni del mondo, Vol. 3
I fratelli Scacchia Enzo e Nicola campioni del mondo Vol. 10
I fratelli Scacchia Enzo e Nicola campioni del mondo Vol. 5
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc24bd27ff34b85bf2de02f2a06fa5d84939a9f2d40f990f454e4455b9b65ce87. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T10:05:23Z), 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/TCAGY2358482.
I fratelli Scacchia Enzo e Nicola campioni del mondo, Vol. 11
I fratelli Scacchia Enzo e Nicola campioni del mondo Vol. 13
I fratelli Scacchia Enzo e Nicola campioni del mondo, Vol. 12
I fratelli Scacchia Enzo e Nicola campioni del mondo, Vol. 14
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca276f6640fed1120e523c1a142b17506c5d5d1b6d3067ca382f402489f1a608. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/TCAHL2337219.
I fratelli SCACCHIA Enzo e Nicola campioni del mondo, Vol. 15
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x987fbadbc715f331501d978523a49934d98112efbdf7190324333380923ffb4d. Chain 2 (Bitcoin): anchored in block 957763 (2026-07-12T22:01:25Z), 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/TCAHY2499160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb30db39352c137360fa02834a542222fd7f52f82bce1163707a92ba550754bd6. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/TCAHY2499216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8129a75aa0a03f708f34e21294687dcdb5afcfb2706c560a7ce05376c3cba50. Chain 2 (Bitcoin): anchored in block 958473 (2026-07-18T00:52:36Z), 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/TCAHY2499220.
I fratelli Scacchia Enzo e Nicola campioni del mondo, Vol. 17
I fratelli Scacchia Enzo e Nicola campioni del mondo Vol. 16
I fratelli Scacchia Enzo e Nicola campioni del mondo, Vol. 18