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 0xacacfa12276335636d08ef1dc59a1f9b22896c495966ba8438187c64e942213d. 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/5dc02079-7146-4b61-8cd8-2d4b2f82cbc0.json and https://artists.proofprofile.net/proofs/artist/5dc02079-7146-4b61-8cd8-2d4b2f82cbc0.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 0xee5e1a1fa1e8a71510febe58808d712c5d371abfc7de49c35e707e386123ee35. 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/QZDA71980784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86ac725261266f0d69b53dbab03f51c1f67cf5344c16b184d2ce1919713ae923. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/QZDA81917168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc6fcce4ab8284d2938713ad647197c433b32a7f37d94c6ab7429e8d3efb45a6. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/QZFZ61973200.
Sasamahan Kita (Araw-Araw Ng Puso), Pt. 2
Sasamahan Kita (Araw-Araw Ng Puso) [Part 2]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b88602b5b55f45330681444bac4f59a95c87156c97b4000ddedfb9ce34c39d9. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/PHV032111814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd2efdd92a0809f843ca3c2b9a770efce49e17cf100f2cce3212d1cf2e72f3a6. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZK6J2248739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3430a2fad466473c19750ea0735687337eb49f1bbe807b6917063ce957721b3. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/QZK6J2248740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a805aa22312dadfa5dd9781c2126e12a7f03e145bf6b3b3d9d4aebb0c5fe165. 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/QZK6J2248741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9fbfc7f9cf1b178c6bb673e27e03958635b132ab538cd21df90cd02bfb1a32a. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/QZK6J2248742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7014d23089373ba4c9c8bdbd3600e50e316d39fca047a65cf45b1c9d6af6eb15. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/QZNWZ2284207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6ba9b7cf24223113443780f97e4920ec4cc80e3dc30db3ff3f99ebc851ddca2. 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/PHV032212091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad4ec098289274c12da576d0d0ff1ffb5f5ef3506fb068db71ef6d7a9a2a8753. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/PHV032212134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x161f0e8a2a9237f80578cf85f3e1c38a89ef48d83286ed656228a806288c9aa8. 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/QZTAY2247760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb058cfe12e7be64e61354aa12cc76b73586f67595a98ee7a58499183fbad1685. 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/QZTAY2247761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02576326ec940e227ee8de46078a826c38f813f049b97643b45391fa10cad3f6. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T21:09:36Z), 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/QZTAY2247764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6ba9b7cf24223113443780f97e4920ec4cc80e3dc30db3ff3f99ebc851ddca2. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/PHV032212091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda70e2c729171174b3c0f514d5e9893e2734cdd6cf69629e688cc92c17f5e15d. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/PHV032312219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44f6c16fd2ff5f3de1931ca81aa46d4f7a2093c4bd7a86cddef6ab8f764c61f2. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/PHV032312220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22413a97466294dd1a48289238998c3ee6aee39d01cf64fbb38b314ee4c22773. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/PHV032312222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1919932856fa3c92125929917846bbe563a3e1185e9deccb50faad93fe423f7f. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/PHV032312224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf64e0cbcbe2ba3afe0ae4b66df700fb5c3757900f4c0d6f49905ce53f4bea70. 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/PHV032312227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a32db683cbfbe41a0dcaf0939cf58519b81070a25567e53588490af8335ddc2. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/QZHNB2314398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x066103f448e070ee62a745630408ce0538a2750ec40055e68986966e2332b5d0. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZTBA2351020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x804d1ad104e8cb29d777b797a90cc9e07e4d938c9c8ecfa38975a0bef49bb4da. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/QZTBE2550737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75f09be0474ac10586dcb206929b0c66135f63c42073c642ca42ccc21fa6f506. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QT3F62595048.