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 0x256855215f1c8348da14a68a889269af0edc8bc287b0d4a71498c3a8349d5cc0. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/510ef18d-a57c-453e-bed8-08ae55e02bd8.json and https://artists.proofprofile.net/proofs/artist/510ef18d-a57c-453e-bed8-08ae55e02bd8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
O Clube das Mulheres de Negócios (Abertura)
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 0xc82c32941358de3fd52318818f1a0c1022edce0fdfe30768d66463017881aadc. 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/BRTRB2500136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9be914536c6a8081198028cdbe3682c3e16b5d715291e161f3c93806cc8538ee. 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/BRTRB2500144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb1b5aa138f3100ff0cdc69a6f351477d24934f7d3e20cfed273e8b8520ea209. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/BRTRB2500160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09a7dae04feff61365a988d75755bf236df0376f4146a47e138089e4bae28bda. 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/BRTRB2500153.
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 0x14f9d19f408a3f0a58ac8313d6717815e9d8636c3ba1976d588efc154b95b0fd. Chain 2 (Bitcoin): anchored in block 960352 (2026-07-31T05:48:30Z), 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/BRTRB2500154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9a5f82c7abf0cca466152a42db75857c21e8bb4f57b43f9657c0fd2c762c2f6. 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/BRTRB2500157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66d3f26947c0e893ae9e6692752338532cea7a644c5c97cd457902f1804bfd5e. 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/BRPPD0400697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d10ab5c8c434c34063eb4be54bb9398131926f64119fc371f53e6143c6c2224. 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/BRPPD0400699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76b01a1d8f4171b2527735d1ce934dcefb49526d761c92300091f02083750567. 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/BRPPD0400701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19727f37ff614c031fe6ca4426eeb002193ac92e6d4058723127e0ccc8de2288. 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/BRPPD0400702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd9e5b958d598c3ab6ca37577ddd91ac8317f467bb04c66768ac3eda6bbde00d. 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/BRPPD0400703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd5606013cac58d1d11483ffe8ba84f43ee01f7e4c5ad02d934ef176ec33f8be. 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/BRPPD0400708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02a5b0a9d08dd25d3b4f97b0f42aaf8ab51d5ed3f136d1d34d8ee726f95b4fa6. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/BRPPD0400696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f55ed7d898bc8086d045d6cc9532608db2904197546988eff21b2f23ba3a4ee. 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/ARJ231000006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacd3ece2786a561449af6121579366a41cb5d135f6360ebdfb206fcf48ce3ff9. 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/BRTR61100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bb74aedf8d87b968db1f509f4451cd9349a0d2f3f707d4482016570b993a03f. 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/BRTR61100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6a86affbcd8dd3c1f43c4b9a8222ab3f87976291c8b575d6f733ba8cdaa265e. 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/BRTR61100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61bd7791ed18b7d741b855c5efce5d23c840e82be701f26751c145216928fc19. Chain 2 (Bitcoin): anchored in block 960352 (2026-07-31T05:48:30Z), 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/BRTR61100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d8453b687b4292cafb2392a8e92c378ad8f5a141da1bcbec5661d84aef7bcf3. Chain 2 (Bitcoin): anchored in block 960175 (2026-07-30T00:16:15Z), 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/BRTR61100006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x687ebff54aaf7df51034b7fa5ae2f767256000d41569b7ddc142481e12d651a9. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/BRTR61100008.
Maria e o Cangaço (Trilha Sonora Original)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3726eaf5869f87929fa0fb4e7c4145adad94a8dde6005f1c1b932792d50eb91d. 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/USHR12449933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3a86b28717c1ce711833b15e9aae07657a049eb13acde964ae45c13cdaaa0d5. 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/USHR12449942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9e850762cfbba6cc24bdb3d9c651c458a085aad07115881bbb482ca82fa9669. 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/USHR12449947.