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 0x26a4d81c5d108efdb293a347f99e411f143bb4d88111e1c9c2597e134a0be339. 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/266130bb-95d5-4f7b-8692-80ed02ba2ac2.json and https://artists.proofprofile.net/proofs/artist/266130bb-95d5-4f7b-8692-80ed02ba2ac2.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 0x99c9f8e0f9de6160b52e5245b690600ec581f54934cffd67ab48b96506bdf28e. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T07:28:06Z), 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/BR1H61900060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x642f8635a44bbf507636e3861da13732a0ecc417c487be243fbf1e0a7cf87668. 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/BRUM72200600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6a6e3cd20b71436466d2b81a86b9049b98ac96d37b473a20f603450cbde0b34. 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/BRUM72300389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef6da97645505374af12f1ac8788e137c1610752b0ab0c35bee3ce2c9ce5aeb3. 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/BX8P72100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68b825b29cb8f23b093f1b8a908e32ea276bbd4ae2a90bab3bccc2cd8e0b1b57. 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/BRUM72201421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb973645ca0f32588acb7f11f41a8aeda20a9aa4887609da74ee9a5d8825eb75f. 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/BRUM72200796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8544c2026e50d1b3762090d160c0f1e3125b64123aff55da154c8b8c6ca0ccde. 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/BKL342400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf089f497c8bf21c99542bd1337dbbea63d2258924b7fac741695f2dc895fcf4. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZTVM2417760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf849a6857dbde858120dff4ec0d7dc7bb8a1a0597af682b02c12e22c9705bf2. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-21T17:04:53Z), 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/BCLAH2300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa55576e399afbfdf9f87deb230ddb6cb83d6457ee5cc3ce269ccdfdce8f68663. 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/BRSME2201115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x709ab2a9d8e495e1954891cbbbd54f1660a34c3c3d28bd521b4da5b4ac2791ac. 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/BRUM72300288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb973645ca0f32588acb7f11f41a8aeda20a9aa4887609da74ee9a5d8825eb75f. 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/BRUM72200796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x127ff8a8252ec9d5e2bd83750169c21ff569ea37b00f3a593af86dc3e835cc04. 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/BRWH82200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0116fd0165c860e73251ff954f17c8929515693cf448604a89671d10a2ea6c18. 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/BCD592100138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1950f4454836cfd955dc64a7f39315dade38b20d26a8a5949c3a213a6772bc9a. 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/BXHAC2100134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc613098f7f71108de4a8530625b5a9794c47448970e6b2570ac37f929c1a9c2d. 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/BCBKO2100012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49fab18720ecb4ab7fc501bd4e07ff78b13002c63088f079f78b8706e53bb30b. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/BRUM72100325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49fab18720ecb4ab7fc501bd4e07ff78b13002c63088f079f78b8706e53bb30b. 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/BRUM72100325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fb80769c78e661fe88c6637dc1648f051d3119d408978400f6c93c9d2117165. 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/BRWMB2100259.
Pirata e Tesouro / Duas Paixões / Idem / Livre pra Voar / Oi Amor (Ao Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf896854ef78b7463b63a70bb821ea5519b59b2e65d68b7961d093e4826aa37fd. 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/BRUM72100283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cd7b9b6cbd8812b845f899076ead00c234dd69072c49c513da001e2494b45aa. 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/BRSME2004643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9be8721d7a1d0977ebdb6c752d2f174f7c1f14c6376b57b0ce9fa96dc3fa47a4. 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/BRUM72100224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87e7744697b4b378efc0af6842c2ce39d04e122465e116476b58c7362ab63590. 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/BRUM72003398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaff5ac2d0b5d1c9f55667ab4f568866e7b136cf7feb48b4ede25f03557f2c6e5. 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/BRUM72003140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x855d3807270a5b90c25477dcce63122cfe7c9793ebcde387a1adf7b042c46181. 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/BRUM72000861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34ea4236dcc4507dc7af5d07067d4cf8c581884a9aee3211040b6fac6fe42b1e. 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/BRUM72000826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d0c3a980afb4b15930bef6884b551e220c2a82e34d2a45d879f8fed732b79bc. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/SEUM71900591.
Are U gonna tell her? (feat. MC Zaac) - Heavy Baile Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58975c0fa85abd554fb168f25eeeff516393d42c4932478775d4291d7d0ac9a6. 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/SEUM71901358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x835ce91814db942001ec0387b36052373fa007cff315108d1cda13a6961f87c7. 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/BR0P72000004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8f1917b9ae65c4d98f31c724c0d99dc4b9e395c7d432e9ad5442351f43fab3c. 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/BXIED1900003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x434616e386e0c280a1784f3ac5932d1205e93895608b1ee9abaa1e644aed8fcc. 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/BXS381900007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1163aaea6e5200e358fc976ab89952d397be7a6c13ecf39dc01f8e0f8469cd1b. 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/BXS381900008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2301b0ca68f9b8114f1f02e6b4143b38abc029bc61831c7af93b4fa82bca3e27. 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/BXS381900009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e18b10cd0f1f32d4dd6319e264c78ea38b32c01da6748bea119e7a0b0dca9b8. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-21T17:02:56Z), 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/BXS381900014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeae5abc7cdfb4d635f9467156c785d0b89defb856c6a3d8d14827c04b1ab920f. 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/BXS381900011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x353e0b5618c508a299df42e6110c452defbc39ad988524e633121b9d9d1b1be0. 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/BXS381900012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f99a0f6168c3e3c5b628bbf554203e5ea81554b60a6a04df4da78a7a7e53566. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BXS381900013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d0c3a980afb4b15930bef6884b551e220c2a82e34d2a45d879f8fed732b79bc. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SEUM71900591.