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 0x7fb1a1194fc313624ce070cb9553548a7c328fc67ab28177ec98e9ad6fe9d307. 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/74ce5a8c-5b08-41ca-bfad-c993c8a4b3fa.json and https://artists.proofprofile.net/proofs/artist/74ce5a8c-5b08-41ca-bfad-c993c8a4b3fa.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 0x00262e4b6851d53764f740363f0486a5a46881781d1a5b93cc218a6744957f8a. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/BRD9I1800048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb99f7b27eefce1c4b285003b15e54a5afa240b7e103836469222124f1a30511b. 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/BRD9I1800052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb623fad6323ca3d99a3b8e07b8cd65221b9551f52b31648be53a1f9a0de155bd. 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/BRD9I1800055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5dbd81c93bb9b0b34daa4e3410bc20eb53440cbe5e809f4e498522780d0c636. 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/BRD9I1800049.
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 0x188afaf06a5c0c09b535398e99e2fd56ae6cc5c295e792951affbea30fb9c4c3. 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/BRD9I1800050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f3e7e8f49f2dd08d37ec3b1a99e8509e9f3c347de679af0765f497c23533159. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/BRD9I1800051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31e87f2f2dfd1935c85f11e49fe5ce218b22af153a621df931aa47d493312105. Chain 2 (Bitcoin): anchored in block 960241 (2026-07-30T09:58:01Z), 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/BRD9I1800053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf59f7ef21efaf520272f81358ac93b837124997df3f46559b721582101f50579. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), 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/BRD9I1800054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6838f89d2b5e6e451bbd89b08d806f5c128cf615a050396001067fbd0fedab01. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/BRD9I1800056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33486879b9cb387752d7655e3035dfcdfc8e20418d7846fdaf63dcb0584ef0ff. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/BRD9I1800057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4621a96c38c840ae347355e884a477c33aa1985c8cc2733c2053d02b15f239cb. 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/BRD9I1400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf20e5700039d255efce542e04c54fac0fbb78ef77c5b15e3612fa7d28ed0171. 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/BRD9I2100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb15485c4b01185473e9072f889800d5aab70765262759b3b996c2d81bdc8d39e. 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/BRVGB1400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96e8233af343be1931de9ae3ca83c5db0430b8c40501d01395ca3e3df9b4bdb0. 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/BRVGB1400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1d6fb0451cc1bb776611c764742c497bb66d281560f59db63368d7fbbb09af3. 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/BRVGB1400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb271fccf36ba34efa637bbbb3da79c193e328fe3967d0d23ddfce34ea258fcf9. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/BRVGB1400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6740d5ac8645981d354fa78eaed15ceaa8f1b0b3c9954cea8a2a9c6a3ea9c31. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/BRBBM1900002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe66389f23dd2c72c4838b8a63787e62257522b4b6013dd055373e291b689fad3. 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/BCDDG2000004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4be7a933eb296f2527dc2326fc39e0097fd567c04aec374a5be16046c09289ea. 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/BRGOA1300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aed6baee96137a5601511a7a60fac75d73b98ed0ba85f0441881974eb01f9b9. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/BRGOA1300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03ad596636fab224f2f3c36dbcbdbdeefe00f28bc22b25ff32ca10baf5da0a50. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/BRGOA1300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8322aed9e4c0165fa8b4494e7590b98045a1068507517502cd615bc5897ed21b. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/BRGOA1300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9ea343bc81a28d1ff53ee8a93935865e17aea38368eb79c837a63dd6267daca. 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/QZNJY2163869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4b7d9b8d6bbbb3b7841435a8cb83915dce325e22c8e9a05071f3e615259578b. 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/BRTRB2306140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa967342baba9ec78c1225ef03ca144eb582695353eaa5460e13417b3efcd9e24. 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/BRTRB2306141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3398be50b1739f36eddde03177bb45c6c071deb1583eb1b614c3eb906f32bde2. 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/USX9P2428077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97355f1dfe465e8b937d6074c5edcddef3e1802b2ca4e90b16dd024e48b54e21. 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/BR8ZI1200002.
Sergio Reze Falando Música Quarteto - Manhã de Carnaval / Melodia Sentimental
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9304d13ef2cdab4736f187f3d7f3d52202ddf214765e0ce77468e33826207b94. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/BXGTT2400201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6d360b9faab2f26996f0f1073e4fc999a680f51548e2c140b4be93b92bd8a61. 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/BRIXG2100008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc475103a15605f7f9c9ab029458c8f48d6f9a1f806f396116975a029365a3eb2. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/BRIXG2100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96186dfb61da78019aa4c7bee674c2471afd10a55e38ed894635a678f6b524be. Chain 2 (Bitcoin): anchored in block 960487 (2026-08-01T00:15:43Z), 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/BRIXG2100007.