Lapsi may refer to: Lapsi (Christianity), Christian apostates during the Decian persecutions Lapsi (fruit), a fruit from Nepal Laapsi, a sweet dish from Northern India made with broken wheat The
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 0x28856a111f16c7d38fc4fa25ec1032b4d7badaaa5b9365778488daf9c7ce5440. 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/af132c32-cae3-4fdc-b27d-6cd67c3da253.json and https://artists.proofprofile.net/proofs/artist/af132c32-cae3-4fdc-b27d-6cd67c3da253.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 0x50dc24ff65e02cc549722d5d0c446a8c299c1fb63ecc81b37f14699b4d409b38. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/DEYT72100518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7600bdc0ebb0540fd69879c7ac32c95daf34ce328e6449ca80501617133b90e6. Chain 2 (Bitcoin): anchored in block 958682 (2026-07-19T06:17:12Z), 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/DEYT72100557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x923c73250941936b4ba00c3abba8aa052ffb9eda75476c0e5099212c372166fd. Chain 2 (Bitcoin): anchored in block 959003 (2026-07-21T11:57:43Z), 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/DEYT72200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca319961ef6f6ecb05402827c973cd6c569d0e0187f6795791fbc4fc87a4bbf6. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T17:58:04Z), 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/DEYT72200129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8531971233ffbd0eadf4da7c4f43cb1adbac4b3bdc6e059702d32c5d35b6583f. 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/DEYT72200264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5917fbd749d25b2a7ddc56886a5fe2953352a9a5c9715c835a9ca67df2d0718d. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/DEYT72200550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x156e1dee734355bf7b866a362c692d43638f59085052d07851f335c19263f163. 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/DEYT72100637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb3fa07d6b4f646ab751a12d992831a95df3b1eea72918146b5163fc72b44697. 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/DEYT72200032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa405f88d02a4566df8e5c54950d71ef280006af5f5416692ba2a72c94606d927. 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/DEYT72300064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9b23e99635895b9f5aed079c1eb2f6091875be457c6331d8f9d92721d13bb8a. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DEYT72200464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2a0349d689d70f1d26e17294584ec252f1d230c7da34a697a356749ed09f022. 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/DEYT72200238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba000e8d0e76865eb68e678eee6964360030731e9a7128865f13512cb6305d18. 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/DEYT72300237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x338e73c7953d11e117d4e112c36d548f65f9123efffe3aaf4dd26683f528589f. 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/DEYT72300235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94c19db83cc10b776d107bcbec36b76555a158089eb07eac261535d767fe3945. 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/DEYT72200609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60034ce56f00d4334997743e2b665c2f5a869df71d802dc7c416bb684b18fbe5. 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/DEYT72400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1228e425d8dd188c180a4c4b87aa07e79a315d9300b64a789864edb0b9e9189. 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/DEYT72200406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x702b06cc797d94ef1d0cf0d7056c5ff7e43d916975d0610e90e4d4af3b36302a. 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/DEYT72400218.