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 0x7b93ace34ef426b8837f3738df9ba3b5121ce3751908787f078f18dae0977003. 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/86587100-b77a-45d6-94dd-3f49028bf0a4.json and https://artists.proofprofile.net/proofs/artist/86587100-b77a-45d6-94dd-3f49028bf0a4.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 0xb87ac0cc28ab4496b8ea222b971b76e771b6f6c524f09b7e262a1c934095e3ce. 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/FR0NT1801270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b899e6b81ac7d9732121243c6e735bbeffbc5df90ffa20ee83b9547e0fb87a4. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FR9W12005780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2c1b61979dd592a01f1f193603f2222529a8df93e6f834c858935824c22d74d. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FR9W11932349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2062baf97304cc4754e50a1c4d70185a455046311a5a5e9d951abaffa1ed0fc7. 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/FR9W12113986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2062baf97304cc4754e50a1c4d70185a455046311a5a5e9d951abaffa1ed0fc7. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FR9W12113986.
Sonata N°1 (Allegro, Piano Sonata No. 1) [Beethoven Remixed]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee99d8ec3634bdbebbe520f50383572c4056f8b2ddacf7384499b619d2f82b8b. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FR9W12328193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2469c455782ad80ca033508e44119b40451ab1cf22479bbc2fbb6802ddda0119. 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/FR9W12464217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb964f3e05eb45b4b37c22289ec8f21dff2b1f06f21b05bcf1687d441d00b0e6f. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FR9W12464215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2469c455782ad80ca033508e44119b40451ab1cf22479bbc2fbb6802ddda0119. 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/FR9W12464217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfda6d8a4fc6c210085a7b6023d5b5876a690feb1c1cf2ea3fc92311274f8bf5a. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FR9W12464216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x976bbc8a4758c65df6f4825859d4ad23f6755f317e856a11da70f12450037d77. 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/FR9W11924748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b040f09ad5692a740dae522c19651f4fbf5cb7ae36ded1b43a835b6d2279181. 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/CA5KR2231238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba00586ef28fab157a43713bd3e1d45cadce8b56462cca2d4176c84fae34657e. 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/FR9W11916213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba00586ef28fab157a43713bd3e1d45cadce8b56462cca2d4176c84fae34657e. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FR9W11916213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33df41759a9353283b959132ae2a2f3f486cd9798fc7678277d391967072d171. 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/PLF242007483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89b93b986d33f482cc2c2c2cab64e1f6b30752dcc015cf7526635a90a9af9832. 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/PLUM72200095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x446ff23cd7ea5f5a0ba670c9bc7056836664b792661ede10bcf6754bd3a984f3. 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/CA5KR2506611.