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 0xf8d0c5ee94ee2f52931f15fab0315a01e031239a3dd4e4e4436475ca6efec5a3. 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/e25d0233-5024-4d05-8c36-ec9a8e33bc8c.json and https://artists.proofprofile.net/proofs/artist/e25d0233-5024-4d05-8c36-ec9a8e33bc8c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Sublime Voz da Vida (Canções de Marielza Tiscate ao Piano)
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 0xe18831c5c95ba89fa8b4afdb537143c8619b9ac36fb20f486c4d2b38932bb9f9. 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/QZ5AB1932670.
Toque do Recanto: Músicas Espíritas ao Piano
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3e32bfcb08a9af17e21fbf108ae2bb30b74c4426e9aef3d45f70e5be5e006f9. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/BR3QK1200015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7f6eb3e4e99ec062d783a18369c1392092f5fa7ea4fe7fb5b05b53bb15d493f. 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/BR3QK1200005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b7edec02653771cf146f0abd68645931158dbef2cbe6b3e9c5627503bc3e2ec. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T07:22:35Z), 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/BR3QK1200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68f5e5b8ee2a0536894f13ae2877a9fb471d319e415cbef4c5f2994daf11e7fa. Chain 2 (Bitcoin): anchored in block 958474 (2026-07-18T00:59:09Z), 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/BR3QK1200016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f5c778c8dd93812262459a8b22b80561456faabcfbfeaf25f1e1d72e9d2ffb4. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/BR3QK1200014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ed3c2cbfa02e1ebf5ec44ddc809142c6a672578a004eca53fd062d3553f35a7. 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/BR3QK1200018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x107b40385f8660499ee10951f36cad6fb1f3064123628fac5ef1d39761fd6826. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-19T22:59:45Z), 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/BR3QK1200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13f5bd5a52a6f9485ca7fa6ad38c279cc4e7e4397cc99d18996cefd56e09e8e0. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:27:08Z), 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/BR3QK1200012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5cc00e1f6642ff0ed75601e631be913dc1da80c0a3bd936aa06248744f6e6bf. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T05:15:12Z), 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/BR3QK1200010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x115834b65473d36e947b953a3b7cfa6d7682f052f40631aa0f79ae8ba0fbb677. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T19:17:28Z), 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/BR3QK1200013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52ff2b2758be9176f0d16ded8b7104bdb95652dca45d42ebf245de9c732c8330. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/BR3QK1200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x599892f6c388d2ba92b54e25d3d2ad86b018652f8e045f978bb06fe7bf7d471b. 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/BR3QK1200017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb68967083d421765aa237c2bfb4f5e94901f5644ef105bb4b0fc5cd309e9b183. 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/BR3QK1200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04ccece0ef4bed62f2aaf76ae8cb6c7f34b5beae81eb840cda8ad158ae653e36. 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/BR3QK1200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61381a5271c84bbbcad9610ebc9a03fab880571a8d06c1de5f4c4764f46429e9. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/US7VG1812052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x281d9cd857dde4ca9c7ac092487ed2fa647b9631e081faabca9c09db98828b4e. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/US7VG1812053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dbe87750b1cbbf22fef922fca6e600f1f2205bde3c3467e1d7ee001b72cd5f8. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/US7VG1812055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e4b68eb53c6d2e13e8af5bd320db49025a0d56fde04ab83b6a42366f7b1078e. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T23:19:54Z), 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/US7VG1812067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37186f0bbf821f710e003055cd39452e6ae61e2a9b4b144de79111678ce3f801. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZHZ52062207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x595e6fe11e46961201c027392f6118e871048b41cc0aaf4589d5f270896df581. 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/QZHZ52062210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4c8496738471fef452b010fdd73c470911f57d96314cc9d3978cecec33d7865. Chain 2 (Bitcoin): anchored in block 957576 (2026-07-11T14:19:48Z), 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/QZHZ52062212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x296f2dfb0530d7ff4297a032f85c4b25e8a477f92f6bdc5ddca6de8b059d30bc. Chain 2 (Bitcoin): anchored in block 958668 (2026-07-19T05:16:11Z), 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/QZHZ52062214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cd6151e23ea5b9e0f78217005d50a9c66306b1423e2d82664fdf33c1496b946. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:48:18Z), 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/QZHZ52062221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecdf8a5bdc1f51d99b57da39db0fc92684984383431c24c4e4603ae434ea839f. 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/QZHZ32231102.
Pelas Estradas Imortais (Canções de Joelson Queiroz - Voz e Violão)
Buarquianas n. 1 - Canções de Chico Buarque ao Piano