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 0x07e66cb010d01244f6eecb4f78767fcfe225e6d3f6aac985216baa6716213578. 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/55e25a66-c15e-42e2-bbb6-54c3c027204d.json and https://artists.proofprofile.net/proofs/artist/55e25a66-c15e-42e2-bbb6-54c3c027204d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Sertanejo, a Cara do Brasil ao Vivo em Goiânia
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 0x55cbdbc6eee9a92e0b95cedbbcaed2a201ebe56be57c59cc111428477a0ac3f6. 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/US7VG1933125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46fd92c16b1f1455055d504de14896a6dbdd9c95d437ca2ec11129db9bd1919c. 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/US7VG1933126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbbc8a5cca32a81fcbe584cc570a0fae596d04349ae03abb458099ab5a2b5515. 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/US7VG1933127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a7af462839627429c476eb1ffe2f9a26f378a54ecbf8e0c773ec9cd64422b80. 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/US7VG1933128.
O Que Tem a Rosa - Instrumental - Ao Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x889d1af2ff3754dbd5e01f6744c7e8d0646bd0f990ddedcf037ef3da55eead0c. 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/US7VG1933129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d421a80ff0e0ddf7ed34ef5bbe66d86889e2d39740e059d663322cdeda55624. 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/US7VG1933130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa893934657dbd5a7c8840bf2d5cee9a6469cc9dd334e0c1a39eb57a5f757ade4. 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/US7VG1933131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc488cdf328ff830645d0adcf7cd465b71f67ca24088c3a9ee358a8ecaec52a22. 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/US7VG1933132.
Capricho Cigano - Instrumental - Ao Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c77243ee9c59db98fe8be8a90c7c12f339afa6fbfb8fb13564ad1e0bbb17e29. Chain 2 (Bitcoin): anchored in block 957067 (2026-07-07T16:54:37Z), 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/US7VG1933133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06a885b048c426ec92c2db3bd96723b58bcd8605a7fb3f621c89c2ff5439beb8. 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/US7VG1933134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22aa15dd5e4479ff5062e1d5dac8f75af5638fa5b7dfafeac59ce1928002776f. 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/US7VG1933135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f90de3979941235c31d2a18ef283406ba7a59cde17c1810400f5b0ee68408f0. 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/US7VG1933136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72ed06439001599df710bc0253d495fa9f369fa7822512887c37c0e55cff0a1b. 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/US7VG1933137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75ab622b918f6c12e018653fd2a6230d0de70f4948ef46db02d6c81d98a09804. 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/US7VG1933138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81413222afe9b1148f999f345693dc6427fa9fac357a13913056a56a011750df. 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/US7VG1933139.
Dois pra Lá, Dois pra Cá (Instrumental) - Ao Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda5ac17551faa701cfd4fe38e422ab19dbd4f1435d8e0ad8adc6526ff62e2ae7. 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/US7VG1933140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e5d60c9a950338b0c882cf5f9a4c69492787a1487bb26ac6b2e685928b38190. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/US7VG1933141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae17f44342823313165dde27ad0f064917666a6203f8f4e748dce5f5deb7aba8. 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/US7VG1933142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77e51ba3c4e010dadacdc24d424a1eb5edaf764931902dd77f1e887c40b8dc73. 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/QZGLS2381578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6059c9831e1eb375c0b2017cb6ba2475fcdcc518017f58dc2ec3506a16d3426. 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/QZGLS2381579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3548e1ae025d6852632d14e22d3923e5d904ef90335ab4091d4163db797f7ed. 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/QZGLS2381580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d4d5a1923e7e72d00e0448a37c41b060781fbdaa453abd91f96609d5cb3274e. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/QZGLS2381582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c97e230c633e5161085337ef55f01f9c388bf4554e46f531f5309556a994acc. 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/QZGLS2381583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa04594fa038edfefd91f50fcaca766fecd889718e88a6c5167e39f2452efa63. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/FRX452155294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb29e135473e679eced0c510155e05378d27e4c5baa63abebd1a98787d166fb26. 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/DGA072132184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62eb9f33cfa9069af5dbbd33ee1d7246148bf02ef915588e4024e048bbb5da75. 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/QZGLS2003855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeee1ad47d213a06bd259c88d97364478a97b4a9d177b70eddae7ee4d7f9c6f45. 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/QZHZ31986874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c35315c4e9252062d4b3f78a021581c090e09f6e2b7deb35cb3131d6f3b9145. 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/QZ5AB2055053.