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 0x0bfa72eb5dc0d43f206e7c25dca4ecb5279d6cf93dde64f9e52ee87646e96710. 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/a7bd4fd5-9a73-4951-9d61-d67542afc66f.json and https://artists.proofprofile.net/proofs/artist/a7bd4fd5-9a73-4951-9d61-d67542afc66f.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 0x82b47dc8e8ad0d7aec1630fcd9569457a5e5590f19fc226da69bd67d4f854593. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/BREMI9700501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f4c0f2be647eb71cc2e24d9d871a6fdd2ddffe8f55512fdde4fd27d7ede8a39. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T23:32:15Z), 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/BREMI9700504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e25ea430fb996eb27b78b3835b5ac802c539e7dc57f6faf91b53e5d38445284. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/BREMI9700506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb17565625004b4550a766083c8af27809a1403ddf0fac2a6081fed1b684b4425. 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/BRMUD9700001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbe09382ca827d7331939267c3af680c679a3d68b3def16c13db8ed72c52e2af. 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/BRMUD9700002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd565a45b1a1a43d1db30240bae86fa0ddcdcbe0ad155c8008606eb8fd1343708. 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/BRMUD9700006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95413b86e8e22d1dbe7d1e76a41ef6c716830a4d1518152d2ede23e0f9322730. 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/BRMUD9700010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86a8755151dc98d22e3c6901ea577fe2d3487cd57d7da78df7f3839a985fb56c. 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/BRMUD9700003.
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
Pot-Pourri: Que Samba Bom / Minha Cabrocha
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41b11b4c2f9f204d8643a0bf78c45a31f46ac507f7d3cf65a8dbd96ec7783540. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/BRMUD9700004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7fd22aaabf7c64519b4e474305f78c5a8acda1fda6adf4b6871008d8265d553. Chain 2 (Bitcoin): anchored in block 960407 (2026-07-31T13:26:30Z), 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/BRMUD9700005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfda858b682f8025273956ac39be181bddb82622752bfc6b6f406d349f2736175. 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/BRMUD9700007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a38fb3e52e731d809655b06c54c97621921f17932e3b1714906cdf31aec49be. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/BRMUD9700009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1240c42392538c468389b3464d76b02acb8c46f33a5b77f760ead779624c518. 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/BRMUD9700012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac774f519ca960f44119493e30a1a388cf3a511225c8e1a04b025da018aad5c9. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/BRMUD9700013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70e8c126bd1aad194e7ef9da9e47683048952b03d2a94a7ac104fe577b6425eb. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/BRMUD9700017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x157365bc01449dcd11b6294384aec785fdfea66f20b276a7665d7e1b7a18be52. 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/BRMUD9700019.
Pot-Pourri: Alegria / Alegria / A Alegria Continua
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7efec5409dd48cc35b864d1f888f45ea606e9decff8ddc942d1c45a25124931d. Chain 2 (Bitcoin): anchored in block 960113 (2026-07-29T13:38:16Z), 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/BRMUD9700021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x841285c5f9f2550205177a6e4daca1121b25569b900f3698739a91d427ddbb3c. 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/BRROF0400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x334c78bac2af7129b038ec3c65ca07cb1d5b686d01b1534738f2e3c79b6b70e5. 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/BRROF0400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaa8fb318a48d88d272166e5f8dcce40000ba605ad8551bdc259f7454834d075. 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/BRROF0400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2692be7a47629d857a410ca40faeac20a9bf03e9bdda4e957050b9dd28ed2e59. 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/BRROF0400016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d4a9c8a8b7dafda42cc2fd8d874e87b99ebfbb3cd7a361a3cbaaa54d12794ec. 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/BRROF0400017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd822ec723d3a3edca4f87d11bc44e50401aea9142a2093e47c41dc713c28ba80. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/BRROF0400018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbaae10b2c1f8549d01843ded0fed78479862ca3919fe7921c28e83f7ecdbf10. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/BRROF0400012.
Quem Me Ve Sorrindo / Sei Chorar / Alegria - Ao Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb4106fc7c401fec78c5ce23086dc12df05cb135f53483ae41b6a82e6320bb9d. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/BRROF0400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea64869fcee317b116c993acfc8e66201e8afca07473772f30da6a34353d5e6c. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/BRROF0400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a20b205fa9e6d884b8f73e12f9c5ffe53f81c867b2f31da5748d5fba74d78a4. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/BRROF0400003.
Tempos Idos / A Mangueira É Muito Grande - Ao Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x648d2492bb61d4ec4ab70ee91c3f67890de5538fd8eb80022b9e479b57c31704. 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/BRROF0400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bdb4566e1d9c52fda3ea3f58743fae8e8e02b9585daadf948cd7742393eeced. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/BRROF0400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbe4e3213cdf0ebaa35b4769dc8bea863dbe9e9c49a50ce0385bcbaf40679394. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/BRROF0400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe87723d431c5bbccd3d18e25274bff647e7b9f91d21f72f1c495a45ae0946a79. 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/BRROF0400010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x033f4053154b6aecdfa0a71ebbed63f757492d4bab3e97fca34861cae7d287f2. 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/BRROF0400013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5ec36f7c438947c9f3f8341457b2ba096d8115c6cce688c34a2c0ffe0fecce1. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/BRROF0400014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc99d1a6dc3e8591b245f37a61c888553d7a8accc888c95fc8c58a8bcd58f3658. 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/BRROF0400015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3d5b8d8ff39be2523075b32d52ec8b81b8ed3c7e58c7130f7a6ec5e0ece2f8c. 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/BRROF0400019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x758b46ac25791d9057e46f1939a4d535ff1a12b73abe75bd893e6ee680d9727d. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/BRROF0400020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dcaf415efb97303df9487f1c126b0ea1641e42fcfc80f6975bf17c33409597f. 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/BRPUI0500413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a0402d4a04ad485aa2b58047bf9e0a754f4f04c5e457336a57b7f758749a64c. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/BRPLA1500030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ccb12c98bec2c2871f546e2050867e7fe13164228d8281ad2ab83a34fcd3ac8. 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/BXMPD1900352.