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 0x223cdac80588c01baac89dbfb643e55fef58445bc8ac2f5a812ba01f3b55d313. 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/6ce1c722-27e4-41e8-a1f4-b2a632e216ae.json and https://artists.proofprofile.net/proofs/artist/6ce1c722-27e4-41e8-a1f4-b2a632e216ae.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 0x0598c8cd11d2a23c4289b3dc03d4e0f9cc1fa43dbe4bd5dabecc7550fa475af5. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/FIPEB2300186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75be95492f36b7b20af33e80029853b399705267a27dff8abea9bfdbc0770c8b. 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/FIBAR2400038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x719c2fa9db31ae4b9c0f24b565a8e717df574003241fbcd21402ae6a6f806999. 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/FIBAR2400160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f5458ea01d5e7b28cc600015119f27ce1cadc7fb9897644b96bec2ee53e5cc4. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/FIBAR2300293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f66c76817bda5c147a2c9302a4b4e0763fc85d18b4705d655f9d98567a03a8a. 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/FIPEB2300181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0598c8cd11d2a23c4289b3dc03d4e0f9cc1fa43dbe4bd5dabecc7550fa475af5. 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/FIPEB2300186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbc372fb84861add550978ec9888b692e24936aa352870ee5a9b5d2b9363612d. 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/FIPEB2300182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb211bbf0e12e5cf0dc35211ff156d02c987e07f7fc9ff718c3750f7c5588ce0. 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/FIPEB2300183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x283c37d0fe6b806dc6ce2d9094156b62ec03eea7059727abaa6cb9300da94a5f. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/FIPEB2300184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52dbd7de326d98ccbb634f322ed4cfea90e29894e57a018d531b6a206ce6dcb0. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/FIPEB2300185.
Kadut ei tuu unohtaa / Kaikki saa kukat joskus
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc8aebff401b698b88003fc279400c541d666fafda70100ad4c626ebd12ce598. 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/FIK3E2300024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5de1a2beff7d51aa22459b3f16ec722b8f6c4bdfc384842454bbab1811229ef2. 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/FIBAR2100117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24a4840febc19cceeffae5b90806ef4d788c8d4cea34a31607f5bb6f5319a813. 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/FIPEB1800035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2ac258df5cd7e334b1fc07946013976a8be2a5466ccec160fb00cd81de8a94f. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/FIPEB1800043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e45d305e67b19a3cd474918407b91c9792cff487002314f961db88c353c79de. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/FIT131800051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31671dcc87f00dfd0f107f78569abb99512a4d71b4d86f4550c03eb84b6d52df. 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/FIBAR2200219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9544ccad19f0ef8f91fe19cfc5f903af8d4d05702828a0cc260933175ccb5c7. 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/FIBAR2100193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08e19dad3d3e7bbcb33960ba19a990c119a1b5c2755b0ce0d5a7f999ef77e9d9. 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/FIWMA2400322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ce4ec67ab26c00077ead7eed5cd6b9527886dfd1c1f792301d29b2156c01bf2. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/FIWMA2300524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc7fb90275d3070d6a0da1d9e2c085cc090e668ef4de61af10ee56c268fc46ef. 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/FIWMA2200345.