A popil or babil is an ancient type of candle holder that plays an important role in Khmer beliefs in both Hindu and Buddhist ceremonies. Etymology The word popil was originally written volvel, whi
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 0xe2d21ce8df43cd4da3e0134e083cb9bb9a5bbae9ece0d1bd27834666f689f834. 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/02963e54-bb61-4b15-9a34-bc42b5f4f733.json and https://artists.proofprofile.net/proofs/artist/02963e54-bb61-4b15-9a34-bc42b5f4f733.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 0xbebbd397c0fc7b192982da6526aaedbf4281614ff19168fb1c7257e7339ed28e. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/QZ5AB2392909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb8f86c37ac72df9c96b164cda64435443176cf838f71ec6a6b35c63c1289cf3. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/QZNJV2304115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05f95c78bd65d82a109045f6dd9e1c01c8a9c4775360cc054785df4e8d0b357a. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/QZNJV2304116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7392786029da511f7044d451a0a85e2e34239009cfeb262a00cee6ae4199811e. 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/QZW9L2299014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23f2996f3d07d4bda1b7cba9c7a7e41d017469cf0de6811c61e7f1679316a2f1. 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/QZNJV2304118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d64198d1ec51765e2d9b22d605c8501b11e08b5a54413fc08a70b20e493d453. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/QZNJV2304120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9727dbc52b2f4c768b6f3529567cf452cd67d749ec8134d333c9cd3bff2fbb5. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T15:31:18Z), 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/QZNJZ2364165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x733ddc29858859b4a43bed34574d0e24a6f814a2d41f4a6567045ee8eb8167ad. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/QZNJZ2364166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3846979e1bc62ddf42b81fa97e57bb0c8079a2009a59395db7038982ca582dd. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/QZNJZ2364167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5c068785aceda73874b3ffd0b178aa11caaded9ab41fc60bc669f9f720be237. Chain 2 (Bitcoin): anchored in block 957741 (2026-07-12T18:30:59Z), 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/QZNJZ2364168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fa6d5ecd6411b6ebe7ece0ba3342f82b957f013657582d1075083153e54d58f. Chain 2 (Bitcoin): anchored in block 958726 (2026-07-19T11:47:20Z), 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/QM4TW2408460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x062889309ae0b58730676e0743abce1f22e50f90dcf5793dc0b49234362ffc91. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/QM7282469078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa93905d21d281a3924d76db44bd537e40f7c543e9614e31361d1f85be82ca10f. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/QMDA72478239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97c13e0ae1cc8d21a71126c11785d19e7a024d0e2b3ddeeb77672f9055914cb9. 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/QMDA72581620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e3801d1c29d8f65e7da10a87ed3196fbdc8a874f9cdd716605b1727693ec34b. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QMDA72581619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97c13e0ae1cc8d21a71126c11785d19e7a024d0e2b3ddeeb77672f9055914cb9. 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/QMDA72581620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa93905d21d281a3924d76db44bd537e40f7c543e9614e31361d1f85be82ca10f. Chain 2 (Bitcoin): anchored in block 958816 (2026-07-20T03:51:05Z), 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/QMDA72478239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf55af5c0ab463b6067dc1b6b1b8c3624339e6de6be0da11763129b79cf342ae. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/QM6N22547524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39a7d3fc382a3f23c2d8912b5b47edbf68062cab0db53f8bee6398e8af4bef66. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T11:08:30Z), 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/QM6P42493795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5feeabdf32291f68e2d8f83c764e699c30cad1c779679ba50b0c75fd69f0b9b3. Chain 2 (Bitcoin): anchored in block 958878 (2026-07-20T12:32:15Z), 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/QMDA72557525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc4a1e5f9f3e090eb7e530464b3d2b483c18c70ec12bdac263872a13b2ea8862. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/QM4TW2507198.