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 0x1013f10178d4aa85e48326abb355c01c8bbf244d32840bd031649878036ff8a7. 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/14d36e7d-8055-4215-90d0-319542ebe8be.json and https://artists.proofprofile.net/proofs/artist/14d36e7d-8055-4215-90d0-319542ebe8be.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 0xad0ab0ecddfaa32fd8dfb52240763c15e108a06608185991a793361e82b19ed3. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/BCIH82305594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a00107d1dc22239db1ca20bf13c1f5d236bcdddd774a51a7c5ae04e4a9883c1. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/BCIH82305595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30f4aa5da81f0ba7800dcfd02c374bbc0becab196e4da04730924a663a269144. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/BCIH82305596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f4d62e80b5234d67594564a6f1451a421afcc42cb23522ff1c76129f4fe81bf. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/BCIH82305597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7815703fa650eb5eb1f514a93198c6ca6f5dd16a43f668b15d9dc49e8f424e91. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/BCIH82305598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8331cccbf693fac1b8ae0b044f84b132ed7ed2fb61cc1f57464c37af36d4dc4f. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/BCIH82305599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x811e1992090cda0e7fd6673c49eadf31c0ede2087ff04214919fbaefbf630c1c. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/QZTPX2413995.
Ultra Magrão - Quando Ela Bebi, Ela Fica Maluca
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xceaeabd3135c2b38a78d7b8a38d9c20b3850ed172fc6e1608a7571311a56978e. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/US7VG2595397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ad005c122cc4450cb112a2ef06a87a01c3f3630bc12917e93d2669ddbe447a9. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/BC3PG2500060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaab1b882cbb70fd543f4a3b7aaed4e579e9ccc238ef70a1f2367eb9d6ae4ada4. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/QZMZ92576057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5adf34e60272cb659e8ebe580aa11fc42e9c46fe11539c2c3d99b3767fcad1c6. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZMZ92575701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0183ce0fd7399166af85bb9337723776a61991a20c1ffb3424b5ff6b9d89797. Chain 2 (Bitcoin): anchored in block 960223 (2026-07-30T07:51:46Z), 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/QZGLS2555461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x001eff9bfbfdf64b4a559fc90dc01a44aa1bdeba72af65abebc1d6e6e3375b2e. Chain 2 (Bitcoin): anchored in block 960177 (2026-07-30T00:21:01Z), 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/QZNJV2593871.
Lembra das Antiga Quando Eu Te Tacava a Pica
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf0872a988e29ffbffc6f1b34900419a18a994c7e00ada42ec0857f55dba261e. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/QZMZ92576168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4d94f9b78c134cb7020572d45fa77e1795e7dc3de0cafa936b26a7a88ce2bea. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZMZ92576263.
Agora Me Chama De Palhacinho - Agressivão
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd615c3f62ac0122c39853b7541762a8f05d07950c9ea3303a6b7ecda70b3c1b. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZGLS2527788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd0fe3ab85c9774e0403f31165354cec37febcbf54468b0ff65c0a137f3e543f. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/QZGLM2503262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84db77a62d36914e99f0c3c199d88965ef1632b6cb9ad435954e40967f06fc0b. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/BC3PG2500603.
Arra Arra Arrastando O Pererecão No Chão
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefb836bee146194a7062b70c7f2de17d85286052dfc24ad19dc49be21fa55977. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/US7VG2599810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe21b5f15d9d2e11ba394389cf229bf9b26a19c5f65f059178073ca3a7f56da1f. Chain 2 (Bitcoin): anchored in block 960456 (2026-07-31T19:53:57Z), 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/QZGLS2520646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddb9d3681f0d151f6ae7bfa84605f71b5fc38b1c5eeb414de9d3d88d7a39e1fe. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/US3DF2529662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6eb9c526db33fbfdf04affdfa2298886b3a9023582a937b906289bf256787177. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/US7VG2599739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x335f1748cf76a2f757566f61457be589240efe570b884666bb587593836f4404. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/QZGLS2511862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc18cd2aa67aaae5e471d9b4a479a4c28fc8441bdb0b15cf46307deb7937fd092. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/US7VG2599747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a2645d780b13755bf437b84aca0fb86dd4f556199cd04b91c9402688f468fed. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T18:47:29Z), 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/QZGLM2503017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f7a83882aeb2d709caa62652ffbed89ccac1ec06593a087f07c50543afeca79. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/US7VG2599762.
Novinha Eu Vou Fazer a Sua Bunda De Pandeiro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28f6cbe7197e961492f9d35e10056f6190ebc1711eef25b9f4b8364c4ffc4aa1. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZGLM2503025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8195cadc4e95e537dea891aa2d140533078eaf8377628bcc8470099e474442e4. Chain 2 (Bitcoin): anchored in block 960210 (2026-07-30T05:21:45Z), 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/US7VG2599796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3efcebbad1d6a1be20afb7cc85b05e6c57565839506df5dc4188638bac86b4cc. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZGLM2503050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c344a5f8a29de29b8fd156432857f6dadbe89b959533f6402a22492cdb07636. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZGLM2501228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d574f21985c656b29af98bff7bafc4ace2fb779b4d008649c03495d85110ae7. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/QZGLM2501277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fa3184e69d2cfa59516cef33f6c211f11fee8289b2ba27bf0e73762ab69e042. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZGLM2501299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83027d1ac95e3a93c0a125a922194ca3163dffe0e369fbe93a91c8b1c1061e33. Chain 2 (Bitcoin): anchored in block 960277 (2026-07-30T16:10:47Z), 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/US7VG2595593.
Engravidou No Beco Do Iraque - Baile Do Iraque
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x493d20df825acc1973321cb79869171e6aaab38f1fc3fe9fafae63ed291aeb75. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/QZW9K2447535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x869b48137e2a8fe6316028210cdd18ce226f1b36fc3d146dcc7f05904261f732. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZW9K2447711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f48bc5543f3b43524e0ed4fcd0a585680312d28851f7f208655649d7180f5bd. 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/BCIH82307812.