María Isabel Granda Larco (3 September 1920 – 8 March 1983), better known as Chabuca Granda, was a Peruvian singer and composer. She created and interpreted a vast number of Criollo waltzes with Afro-
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 0x09dc2e250e4cf6115a4f56153a3333e72b1b25f94ada38c48135b3f8c9c5a413. 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/ad8b8acb-5cfe-4f53-a4a4-85ed1ec78bfb.json and https://artists.proofprofile.net/proofs/artist/ad8b8acb-5cfe-4f53-a4a4-85ed1ec78bfb.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 0x1e2c70aa2f7b4e41b99341c950321afbb409022e24345641667639f52e2833f6. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/FRX871513149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01becb73c1783f0df14528b75bddf4032c99a01a6bc68db3ffb1a85ad9f04dc7. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/FRX871513150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x223c3f461d5b5f5a2829e816c0f40fecae6984d57931df267b20328a2a8d0965. 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/ARF109901735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe40fd9b623d9df4de382e5178000983b07e8dd09913f3d07b645e7b4c6fbbb01. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/ES5079700668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9ce4a300c4c8a377bd871b793657bc16b961c2603150e789457c634c1724a88. 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/ES5079700669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f0113c5461aba91c1f0a51a2f61b52f9e4ccd50d54c5076f689a4ffb3068f97. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:47:38Z), 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/ES5079700670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd61306c7224b553e99e9c23e7d887673ac278422d1aff95a7b8c0f20748f7638. 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/ES5079700673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7f1a7e3c3a78399053d65141755a52ec10895bdf2b69c1c5324591dd0fe5613. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/ARF048000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc22826a42387734770b811cc54173ac112101c8caf900915fddff7ee344f8d95. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:46:42Z), 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/ARF048000004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21b1b68415f2e30aa94c069aa76fde0a4953f920a019f084c35e6ea7a5f425fa. 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/ARF048000005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x370c63bdb0f0f52cd65efc60cd9de3d65cd7b017dd477b937cf62951df08f122. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/ARF048000008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78b6d3f42013ffd4b6ef357cd3a31480b10efe373977129047adbe8db20648e5. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/ARF048000009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dc34b285a4d71208fbf1637b89cc9f378b8d2d2d895088ff915d4502893d17f. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/ARF048000010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2598085ca0378ea1c943d48f6b4c4fb8db7c49469fdbc4ca1213b4081b659068. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/ARF048000012.
Cardó o Ceniza / La Flor de la Canela / Landó / José Antonio / Fina Estampa (En Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3af120ec2e0287ded66dc14932c028c97812db42fa70f51974fea98e37b2af17. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T00:52:19Z), 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/ES71G2043426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7745aad216e381da22331933cdbf99c441ec80086e18f3177bf1f7130569f6d. 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/ES71G2043438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc240ce82437c83e585458d2749a0935010b2d6b103320d39c00a6619e0a857b2. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T21:51:29Z), 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/MXF019501465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5841da8307e49823206066a96b283c50b6ee55f4af66ad247d1b0bdef52b046a. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T18:15:02Z), 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/FRX451569963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7a223eb0d0b36ccbb6094514ee3f1da53fb6ef8fb548b54807f7b23b72618cd. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/FRX451569967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb07978f2d0749a916d8a3a4c6b6cde6c368db70770a78df5379f1d49d05a7d19. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/FRX451569968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaae7352c66232a2a3c6d8e77ea053a2b9e2e93dfcb40f17147a6d2c03f9eefa. 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/FRX451569969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dbb825a4d6db99a486a19a2fd980adcc7d01a81b1053226874a4c8a9f158acd. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/FRX451569972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77c853d0e5962446ed1756180bc26a5a5857bfb8e37b395a48fb881156174671. 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/FRX451569973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9259db42b175703fe3a37371611fb404f97caa81757a52a4a5a1c2de7ebd3a2. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/FRX451569976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05749334873d57b658f11c01ab4ab3a5d0ce70063dbff84d5a1813026736cb28. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/FRX451569977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01becb73c1783f0df14528b75bddf4032c99a01a6bc68db3ffb1a85ad9f04dc7. 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/FRX871513150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0a7aa04d8af9bb747a0a08586405ca1134c6cc1a773c5a391bf401f7c1c5109. 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/FRX871513152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35cd417fee47223787b8cf13a3e7892168c8fa75d473c85856428e556af930b3. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:05:41Z), 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/FRX871513153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb48dc2e756c2ae533b75a77d6b1158227f9e4b9a06a9e9da632a59a8e585c54f. 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/FRX871513158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1521b3c5bf96ffdb6e3eedcc058d1454f98d1c6122402119ec9a4217111dfe37. 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/FRX871513160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bfd855766f14a5d4c02b87f23acdc6b91f241043b3bbfc21c7b78ecd1b76fec. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:31:35Z), 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/FRX871513165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x201bb69626d35bfdac2e6122b49545089c2914ab74c5fe42550e5b362a053ae9. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/USCGH1725908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79ac278b8dcca0db06f703a38ca20c3d3aafb5e0824a42082b85b2ec447e7a65. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/USCGH1725911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x898c5174eb72214bac50aac2a82aa51db24d3b2ce34325f0199f0129c256ecba. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T08:26:34Z), 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/USL4Q1823558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38121b6538450cf62d70ab9fcd54c508dc27f01d157150c376c6ddc28bd14d3a. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T21:57:34Z), 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/USL4Q1823560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28539daf55bdada284721c7cf0e290e923912f60731f24e615126b605774744c. 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/USL4Q1823565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x618a9ccd0dccf9327b96d19dd22f8bcff39eca497a8d660e3faec0cf4e5e1735. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T22:20:00Z), 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/USL4Q1823567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd98e380202c07fac26aa24da44b34f1a808d8d4c56cb9419c6d9f28e9c050c6. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:32:57Z), 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/MXD941808988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e031e6c631ed3ab794e89f5f7421c5aa14bd2eb62de7273c192dc62e83ecba4. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T13:22:35Z), 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/FR2X42434822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b0f7a40a2fa16342592922b4ec6c35a6658bc1d55d849f0e16d072d0866cff1. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/FR2X42434823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb01e889563cbbd5b5b70723e8d5481761c209bb3f900631223f84f73bbafbf6f. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/FR2X42434825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab9ccb5a6427e57e0d6b237b33ec1f9c00a55323f58e1e4cbdba0a58b63a14d3. 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/FR2X42434827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5074ea58cfa1f16251b7a9279b2d38451183abd91d38797524e1d5d9e244af8. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/FR2X42434831.
Voz y Vena de Chabuca Granda (Remastered 2024)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7b87d1a2de55c6af1a514e30cd9210e10117aaccf5ccc5e386cdf9a98213f84. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/NLA460915552.
La Última Vez (Grabado en Almacén San José, La Plata, 8 de Septiembre de 1982) [En Vivo]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc7b8758eb8e222f9cece886e68d3d1ee4d56595edf557525e856100c31d7281. 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/GBBBA0443740.
Bach: El Pequeño Libro de Anna Magdalena Bach
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x652b2318b10e50fd7c6c765bdc6020c09c494e86b59577ec528f25f80d073953. 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/ESAAI0196024.
La flor de la canela - Que nadie sepa mi sufrir - Amarraditos
Plácido Domingo - The Latin Album Collection
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f5889af3e2f0af2b5f927850f4309655492e1acb4ae84b22af877a8d0013479. 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/USSM11303180.
La flor de la canela (Arr. for Tenor and Orchestra) - Live From Walt Disney Concert Hall, Los Angeles / 2010
Rossini: Overtures And Arias / Latin American Favorites (Live From Walt Disney Concert Hall, Los Angeles / 2010)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfc0422d6cb877dee7e8ec409829305c949316dce647084affb34ae6c77574a3. Chain 2 (Bitcoin): anchored in block 960187 (2026-07-30T01:34:28Z), 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/DEN961001430.
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 0x6d4238452c3fe9f3f86a40ea35f3bda880ad662656cca1adfff7a64b36c96d6b. Chain 2 (Bitcoin): anchored in block 960429 (2026-07-31T16:07:24Z), 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/ESAAI0195923.