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 0x8d629069fe8a81bc89b4e3f6d1d00ec822abf2969adb762015a822a1d1b6b5b8. 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/bc18ba10-dd27-4b03-95a6-d6982408599f.json and https://artists.proofprofile.net/proofs/artist/bc18ba10-dd27-4b03-95a6-d6982408599f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Keroncong Jawa Pilihan (Cinta Tak Terpisahkan)
Keroncong in Lounge, Vol. 2 (Infinite Heritage)
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 0x024b2076bbd65d37612f85bc8f158a210463eb40c3ef14a01d9c4d0f18120599. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:32:53Z), 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/FR2X41669956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16ea803cd3957bf8eb3ec9f1c2e61548abb277ae8a907eff8cede9593078b930. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/FR2X41669957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95453724eb6a7382023c660e793d29780232df281ff4116adb922d4666e5abb4. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T13:57:17Z), 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/FR2X41669959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f093e896c0253838c9ec1fae8234a0cf778b19021b5994d0bd08ff6deba07b0. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/FR2X41674701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae5ca965e1d0524c8115d39b505f9818ea1cdcfeaed24cc1100afecb4293d88a. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:37:55Z), 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/FR2X41674702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09734198468e0b60643bed2e358c0553e3bb24b74085fc63f90b26afe6429cf2. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:34:42Z), 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/FR2X41674703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e15ced2ddd2414b387ef8ed1e77b484c34abaea5d221d8500abfacc3b113d43. 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/FR2X41674704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12cc0d23b230169dd4001adbb0748c940fab1d6085da85cc3b1fd1135ada4f5c. 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/FR2X41674705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x715272cc9ad865f32acc4872b2b5651a923648ae1c0a89e52881b62ceff47062. 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/FR2X41674706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdba3b80011f481a9ab42f6050dc7c87a7f293097a4903fd9bdb93163c88344ef. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:33:04Z), 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/FR2X41674707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12225982ac82288b547163961eb00a81470ec69d2bd34c4dab1d007fba26473e. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:36:00Z), 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/FR2X41674708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc48fb0db143811c548ef691050ca24880f868e816dc699c8510e14eaecad8af7. 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/FR2X41674709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61c0037b3fc2ed05a664fe5ca46056d3f67e0f1764e494e54c07d699b73163a5. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:57:27Z), 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/FR2X41674710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9d349f9efec231616695dfa0e6357f42383d08f11f2542299cf11d5ed5dfc70. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:21:53Z), 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/FR2X41674711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43dc776484f8292b8b41761d0d2e72cb90563b9ee25d888d10e2c7ca690f5a73. Chain 2 (Bitcoin): anchored in block 958476 (2026-07-18T01:26:56Z), 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/FR2X41674712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8713fa60faf31f8fa8cef818996aae766c514726415d90030876549113984e1. Chain 2 (Bitcoin): anchored in block 957663 (2026-07-12T05:58:46Z), 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/FR2X41674713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce30590f1534b1a0ded5aa2aa1707f70a6a2f6c3b44b01f24596542bfa41addf. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T08:58:36Z), 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/FR2X41674714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a5eb7c8138e038dde022b35a80271cf2747c387c4e69dc1a6bee8d8391a1b4a. Chain 2 (Bitcoin): anchored in block 957663 (2026-07-12T05:58:46Z), 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/FR2X41669898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32532a45afd340e2391e5ea170c19db25169bf1618d41fe1eaa1c1aa89384933. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/FR2X41669899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04b8b1581d96b508a75621d2fdbff6cece3f7ee4ce2a2e9eb8dd8e79f6731453. Chain 2 (Bitcoin): anchored in block 957653 (2026-07-12T04:35:02Z), 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/FR2X41669904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fce520b9b5a3f584be5ef2594c84d9e14ad54229a3db4e3ad20aed1ce5f4505. Chain 2 (Bitcoin): anchored in block 957668 (2026-07-12T06:54:37Z), 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/FR2X41669905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68c3425c8883ac18b41088a8cfe4b41bfd2923d886849560ce7d4a3b565488fa. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:44:48Z), 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/FR2X41669906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61c0037b3fc2ed05a664fe5ca46056d3f67e0f1764e494e54c07d699b73163a5. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/FR2X41674710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce30590f1534b1a0ded5aa2aa1707f70a6a2f6c3b44b01f24596542bfa41addf. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/FR2X41674714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55301a82d5d4519721a44d3fdf489e3329313d27a3e323fb00ef82e35d434b38. 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/FRX452200886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a5687668a742fe6cc035b3a371954eda5cd98fb085554c5dc8c7768138150fe. 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/FRX452200889.
Keroncong Orchestra (A New Generation of Keroncong)
Keroncong in Lounge - Rindu Lukisan (Karya-Karya Ismail Marzuki)