Bocanada (Puff) is the second solo album by Argentine musician Gustavo Cerati, released by BMG International on 28 June 1999. Considered by critics and fans as a highlight in Cerati's career, Rolling
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 0xe20a3603ba733366e5de3888eb190ef6832d49c0348f0ab6e4a684f725ca5f4c. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/199ace3c-71a7-442e-bbc4-a192a4f8d49d.json and https://artists.proofprofile.net/proofs/artist/199ace3c-71a7-442e-bbc4-a192a4f8d49d.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 0x03aa0f85c46efa7266407030946c438818b60e5a075814d76577bc496cba353c. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/ESA011207489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0cf6fdb3a409943b9ff239e21084c8665370808037207ec440df68e41fb8809. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/ESA011207491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83ca460179b4dacfb5c849c1c0edeb7b859134a9be8e13d140e75b93e691cc73. 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/ESA011207492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c2e9713b9febe1fba6c4654cbc4866caedbeab22ff357bf934d6bff5a495311. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T00:17:08Z), 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/ESA011207497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5db4b7f89f9c84f3a7e5064f18ac4bd0d691de0deeabebce3337c8d93e659b34. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T19:07:38Z), 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/ESA011207498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7c0ecca7a3271b8d37bb92b7b7652d3c058f1393e75a7f52f78ca0390b340e1. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/ESA011207504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf6f2ea0c17a3f6f1534e555debd38e9f87b4be5937b3542bc30877b7764c38e. 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/ES71G1404434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fbaad492e4b157df90f187fae89b736d1d7e98e1770cffc617a8af6c6dfe233. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/ES71G1404435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7f8ea6b910371c3c93d37960ccac862b0d5d126e63d4c02bfaff960b9664a4b. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/ES71G1404436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c525e047e677f3e2192284765da971319bdb6953d92b7c92751591382645fe9. Chain 2 (Bitcoin): anchored in block 958658 (2026-07-19T04:09:09Z), 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/ES71G1404440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35bf206d74641d7850fecc6c3557f34ff25866118bba0493d4184f3e07aaf454. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:34:12Z), 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/ES71G1704673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x187df6fe8791e3fe06c358d3e11d7cc124c8a41a1f4634ee067972159bf44362. 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/ES71G1704674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c82d644cadf4fabdde2c49c29ba9e003c5f6b0164089a8a603f94832b8a9ceb. 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/ES71G2001094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea7721f550f51c02dcb80b14f60690133cd0a10311ccb9a16f46383350ae8557. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/ES71G2001097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fbd81438512e7c65b841768ba95fcc03d182a20b70ba48d427d172c328c0888. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/ES71G2001099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4ecf9892731219263ce71234e7f3763de990f978a33d272cd95a25daf0cfbfa. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/ES71G2314260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60334e33d38fb70bae16ad6a050e427dc0d5200efd8657a04a3bc1a14ede68c1. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T16:16:18Z), 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/ES71G2337205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9825bbf5d8515d102a7e3b5f3c9461d67754ed3439f9d7b4b2aed5cdddd7015b. 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/ES71G2421634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cc2987f6eb0d32737477a35a8933d8f6270df34eafd4e77761ec5ba773fd8c8. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/ES5152200039.