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 0x33e441014011bab6da6f65ba2ee4d729af6ea5d26f49637b8675f94edce1a81f. 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/0262e56a-8a60-4290-95ec-748e8bde2d98.json and https://artists.proofprofile.net/proofs/artist/0262e56a-8a60-4290-95ec-748e8bde2d98.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 0xbd130883f087a1e8877206f7b00d2483d639f4794a84c25689eeea4d40f08aca. Chain 2 (Bitcoin): anchored in block 958653 (2026-07-19T03:54:23Z), 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/GRE019700289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd8d2b36eceb1b67cfc2e5d6f3469453b75162af14ea777ec34533928d94d393. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/GRE019700297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ca436265155331de5db6d91e319c64134a60c28a20626fbc4a79b79d8b16dd9. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/GRE019900784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea3cba711ab8f4eac2ecb20beabe33ca4ce75d27adc732f64b1c82d660eb867d. Chain 2 (Bitcoin): anchored in block 957554 (2026-07-11T10:39:45Z), 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/GRE010200295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d5b9b9c40677f8c1221e3e1f66a86e2d03d159db346df12e3c447e69368fa98. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/GRE010200502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8f4dc909790fd9f9e644b9b8609e2a37bafcce2fdfd9d2c511183e78c08e2e6. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/GRE010200506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0bd58eb8ec6f40a67c489a69b637329b6b6627c9bb189d863d325cad146884b. 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/GRE010301050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2a135cd78f12fad724268039793c08dbbdae5cf4db4255919b9d80eab0f842a. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/GRE010500385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1f0084854431e34739ad1804ef3b14304dc3f99e8a7bf477212553b58a0042c. 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/GRLE10701895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x237c5fb3a627b99a572bb1fe900c6ff1e9fa3232056650d5bb5f4af88fa1e3e4. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/GRE019900778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61902f23541a441a3047789dbd9d7a2b1bfcb370be1eac5f4a27fb50aa38e99b. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T16:15:11Z), 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/GRE010200499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7795ee7ade559c04fc930e9885b01043861aab4f52edd5be1d01a4bfc098e88. Chain 2 (Bitcoin): anchored in block 957554 (2026-07-11T10:39:45Z), 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/GRE019800499.
Μόνος μου την πάλεψα/Monos Moy Tin Palepsa
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9d203b19cb33883b1fa3a40aa974ac6a11af492a8e364fb177dbf8e73d10ad1. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/TCAJO2576237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7533ae310ff1218c27e12141a1c5d079538373a2622679b1c3948e8cd1492f64. 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/TCAJP2552598.