Calambre () is the debut studio album by Argentine singer and rapper Nathy Peluso. Recorded between Barcelona, Buenos Aires and Los Angeles, the album was released on 2 October 2020 by Sony Music. Cal
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 0x1d9be2fdeb2d44ba75d659b5be7567ebbbf6ddd6d853ca500496e6f721645c8a. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/471e1cbf-6381-43dc-b3dd-804bd350bcc1.json and https://artists.proofprofile.net/proofs/artist/471e1cbf-6381-43dc-b3dd-804bd350bcc1.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7a33e8b9084ec9a737e01a4c3476cda9552a860f4ebe213719621c563e98561. 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/ES71G1409793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36956c6bbabc2c02fa0a25e25d218810342766c3da5ad6318e8eb0b918211925. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/ES71G1409253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafb6b41e16d94d990995227dac22e9afa1c52c0556f10f92c8a32a3840ce4b4a. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/ES71G1409255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84401932c7c2e23e4d22d00e28e96c9a67441d203aaf662f88d3bfe62be69324. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/ES71G1409252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8963c6d35b3f0e6cd08e4800afd9bc545505753d938aa11afbcdd7a305249a2. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/ES71G1409251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x497471fea3ae33636b6b6da091adbb752a26f057ab40a4a78e6ca572b5d28461. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/ES71G1409250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x358450c27c875b12a8aae9f7acec3e03f6b932f1d9fd47a22ac1648e632cc6ef. 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/ES71G1409247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0049045412676910c167408858bb525fc84f4e99b4fbe1fb0cfffc872282b70. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ES71G1409246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x006368b7c74ca851fd171f1f79cd201463267f6aeb770f1d7be483b6e2f8e7d7. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/ES71G1409244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x255141c59fe399a7f94eca9f3479a41c71bb14583fa92fa07f345180b445ceea. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:51:31Z), 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/ES71G1409248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88d951467bf3729ffda4c9ba42b7b5c45696ebe40be8758f46398bba0d5d1ad5. 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/ARIXB2500055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88d951467bf3729ffda4c9ba42b7b5c45696ebe40be8758f46398bba0d5d1ad5. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-02T22:05:07Z), 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/ARIXB2500055.