Por Vida (, ) is the debut EP by Colombian-American singer Kali Uchis. The project was released as a free download on February 4, 2015, via Kali Uchis' website and later released to digital streaming
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 0x3361ecc0e8f61bd04253eb61b693c54fcec0af60494c2b153505d37346ecbd00. 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/62029c2a-d6d5-416a-9182-b22c2c57b469.json and https://artists.proofprofile.net/proofs/artist/62029c2a-d6d5-416a-9182-b22c2c57b469.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 0xd8deb36b049657a732e4f710ae93e7fb9b972f3c835e2fa3636a0e99b7c0d749. 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/QZES82047076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d112cdfdf7ccea22a8a19ef06560d2731370562366408935a0e00e0aa9d664b. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/QZRP42112497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff5e0497874143ec4ea2b928b0717af10eec14cf6d39c8e0f280fe8d0676131b. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T09:14:08Z), 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/QZRP42112501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0088378f5de1787e928b6762077f629444c5b76d4eb125aeadbc5adf499d576a. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/QZRP42112502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23a6a19be56ff4404df6a1a41c72d1b6cd31b157ae1d35952db4cc53df7d6294. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZHN52239099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1ef6bcb4d39661de82296a3b423c1364d16ecc5ee8dddaae7d5762b565824f7. 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/QZK6F2491824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2612adea3a0d20773624500372ae6a20c8c6c6b55916c91328f3ce0fd438d703. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/QT2VB2509877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee45181e5e646d3da12dd46dd4a11a6830e2f9d4ef8ca3c70d624c29c013f75c. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/QT2VB2509879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa050a58d1c8d0e8bc68f63566a7ec886a30b42d5a266ce67a01bbc0c0e782839. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/QT2VB2509881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d55701b123d884dd63b2400a6fdecf61e552267b9b574c438e0eff174611164. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T02:50:27Z), 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/QT2VB2509885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3805767ff3a55c962043cf9251a5ba1111f007789ab142c22bec98cd978ceebb. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QT2VB2509886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x070fdc4f3d4a0e88630f6df8c2eeefaa9f20f10c199b094c247a03433a5ffd42. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T05:34:34Z), 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/QZNWR2539443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7afa6e15630c122cf2836e89b9b8c802aecff8e8ab8b38136d7d7f85df57b6fc. 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/QZTAS2518039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2636fe99cfdd3c34ddf75a728a040f9f062edb9a879659dfb66aa48d0e220f8. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:38:42Z), 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/QZTB62588930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf589a54c037fc3907e7f6de0383031ebc1e3478bd9baa378ed60e570aee23f22. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T15:03:38Z), 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/QZWFL2561289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x475a60c49f1da1294e60d8168cc64f8f3a9aecbcbde0cc3c0a9b5d875ed99a41. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T22:10:16Z), 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/QZZ7M2582897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd479637ce4a5503041f1bcc202bfbcc867de0ac7c96814d5d89600610678d658. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:09:47Z), 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/QZZ7M2582898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde77cca9d20d4da10e1dab60a9b4b0b7da2684db3c0b50dfe28d54cde2c2ff1c. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/QZZ7M2582899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99d32becf03ee78dca10bf9443a6d8e79cb91886f6647c76dbb0b0f6f66c996e. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T15:19:09Z), 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/QZZ7M2582900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fbdab78e1d5780e01465fa577b73117ff09b0f8ffa68753570e24f4e833e461. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/QZZ7M2582902.