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 0x5a4b9423cebc8c2d2f891c21f1dfacac7daec58cf1fd539fef1ca43a3bf1f6e8. 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/cc0f28de-71c8-4253-a8d1-4f74c7dc6cca.json and https://artists.proofprofile.net/proofs/artist/cc0f28de-71c8-4253-a8d1-4f74c7dc6cca.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 0xf749a8466ba9f0787add30e7edecc9ffc2719ae471d9912c7fa630361d09f439. Chain 2 (Bitcoin): anchored in block 958407 (2026-07-17T12:08:48Z), 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/BR41Q1200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffb30275550afcc07395ea96929474722bd96ce5b5661e61babc7d304ea33d57. 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/BR41Q1200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77773e87049b937b3fc7cb0a6db8905187abab6f0b8c1795cad74722392ca20b. Chain 2 (Bitcoin): anchored in block 958417 (2026-07-17T12:56:50Z), 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/BR41Q1200005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe50e274b3c5dac04be58dc4ee29e58148b4bb9d5aaaa68c4e0e7d95544a9e1bb. 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/BR41Q1200010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefc136865882cc55efa9a33190092de9cc38f1b815a3cc778106e71518908c8f. 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/BR41Q1900002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65666a8b150a09d0e4b3c073f459b45b90de138f5cd00e16e71097cc190341c3. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/BR41Q1900005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bad91ff1767b64a110b7090cde19d95e0c3c760eb63122ac80a7bc3c0c14f5b. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T16:15:11Z), 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/BR41Q1900008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cc292aca276bce0e00596638eb4dffcace78f53f0b1c09262469d20c359305f. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/BR41Q1900009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc725348305ea65cf6f33e1b1b5bbb87b9b103d1c46b217237d7f3bdf5746a9f. 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/BR41Q1900010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74dca59b8bc92a3f4cd5eedaab9fe3662333fa8eaab5bd44bd9eb82c5c1bd907. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/AUGC22000450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c3a0bb091a75d1187192a3ab6b7348fee7c77ee549b3bd38c95310e78e597fb. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T04:55:29Z), 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/BRT2D2300113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeee34f1a4f4dd5208d663d76d85fab289b571d86d4f70ff9ff5f27f4db599179. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-16T21:55:37Z), 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/BR41Q2300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70772180425081f1418a74dc75569d13f313f1edf02b75272be9aeb413b0fd7c. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/BR41Q2300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0ff0a5acce9470e5f34b4e183295de3bf3139ea20387f555b39aad728fe952d. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/BR41Q2300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffeb976aa724ca8d2c4ec3005cce5244c7bd6f08adddc565c58a9ac32f22790b. 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/BXA8C1700007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8491984d2d983daf2300f8decc4bc12be64795e5a0bc8a7f94864ffaaf554577. 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/BXK1W2200009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9ad518951c2050e281a313cbaaeebec91067dee5101b3bb37f362222cb59929. 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/BXK1W2200010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38f68f44be5a39ca2292221a7e9ae9c74236c2f2229ce46046b667437f71a20c. 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/BRMPC2200016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63bbf82eebd8275fad86ea5e33b31028f042e566bb07cbef5a6f528763926cd9. 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/BCLD52200009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63bbf82eebd8275fad86ea5e33b31028f042e566bb07cbef5a6f528763926cd9. 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/BCLD52200009.
Tio Gê - o Samba Paulista de Geraldo Filme
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9d9ee08e8c7098d857c0ebe0ac10759d07f421ff24a54cee726e3e45add60ef. 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/BXSVC1900144.