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 0x15e7ecdc04c97b42384e684ee1e4a75dd22f6e0633660575f23d0d344622309b. 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/1213166f-85ab-41f0-a6cf-2f7e8cbb533c.json and https://artists.proofprofile.net/proofs/artist/1213166f-85ab-41f0-a6cf-2f7e8cbb533c.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 0x32321f85801abdbde6b47c885e3debe4b88cd76682d1cbc96b855f300cf9ab8b. 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/QZNJX2470691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedd88304740d48c434c507ff3850d9451e73bd736d6529fb0fdb95135e673973. 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/QZNJX2470690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4b3f7e39d046200c6ab781c5eb885d1b87a65f822647684cfeb89d1e3b9686b. 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/QZNJX2470699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6be3794eabb7a89562d978974dfa7b3e1ce229111fd7c6668a52bec38c7eef0. 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/QZNJX2470693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ee306fb6b312364e59e9921232e67db26834fc39ea9af3d91d9bc2e20b13033. 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/QZNJX2470692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a8c99f29a51cc81d916bfbf4e4a4a47b8eec9ceaaaf9283f28165f2e28c01de. 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/QZNJX2470694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc41260f45b2140112c044c8e9c8dbfa890aaeba0d7901e869c6393b2ca3eccb5. 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/QZNJX2470695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6595d031e65dfcd264122e17310b96da8ca264860c0398d7c995284612d08092. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/QZNJX2470696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60f75efd7a9c3ea72b9fc013abc4ab7369e92a8498865a6197e5b14c5e7f32a2. 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/QZNJX2470697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d85ca4cc6a74e3a5df15affa4f076b6c09678cb243ad3cca710110960f6a873. 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/QZNJX2470698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0fb6273343d345506746050b9409266d2a7755be7d805449d5d4795297cf241. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/QZGLM2328833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x027b535d74f5276dab030dd3971eea981ee1c4805b358b3583250170f4b96a98. 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/QZGLM2328834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2e284586c2f0b6f8192c305539af836d44c695c370b909692815053ae2e885b. 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/QZGLM2328835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0e9dbab273ce48eed128160586fcd25350547cd8520e32b5d999d96912a6775. 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/QZGLM2328836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcfe443341bfd3c485d11db542e6593e3654619469183d7ac45bdf54650f5aba. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/QZGLM2328837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9166fb525027780a02219b5359e78167c0056e908f9dedc77929c103fc57d098. 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/QZGLM2328838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5414d712763dcc53c111824cb9c1e711734624937cf0c4d517db8472b579de8. 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/QZGLM2328839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c66940537fd79142dfe1b4f72c5e3af0281b002b86b8a0e6c0fca088ecfab42. 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/QZGLM2328840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb27653b89bd044c556de5950d6e9ae7ac06661b86743730cd7cc60b57a4e5d28. 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/QZGLM2328841.
Vós, na Verdade, Chorareis e Vos Lamentareis
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f03171c94256bfb1ed0edcb5ae827c24b17f9446d9f19e3a65e72f7ec69fb84. 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/QZGLM2328842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07178315d66870855963beb4b069e6c1b6d4c029c0b6430e851149821488a3a0. 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/QZGLM2328843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecdb667d6419e097987e3a837018e24d9934e3a3b1a4346917eeed18718c4948. 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/QZGLM2328844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaa6e2b42bf92986c47646f1118830a75e8dc3b83e7fca8ddd494576f895ac97. 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/QZGLM2328845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c967282590c80ee5ebd5428cbc2c9aad8fbd0fe71911063388963d253a75400. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T13:20:46Z), 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/QZGLM2328846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a4a350f517ad7dcadfdaf14d9f75bea450433ca253a85c9d019bafb62e2f3c9. 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/QZNJX2156658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27f79e511e803b804ae08118cb71b0581cf4cc7ec8893eaecf9b14210ef20cae. Chain 2 (Bitcoin): anchored in block 960210 (2026-07-30T05:21:45Z), 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/QZNJX2156659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a3c6369ef16aac012105eb156da538fab5f98a167d8ec3d1f1f90f227f42052. 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/QZNJX2156660.
Há um Lugar de Eterna Paz - Pararampampam
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19353ded6634c6c92c64424e75aca45e74507d9269e1d1783320b9c4f3f2b0c0. 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/QZNJX2156661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74a85bdf7f25c7499c85662d09a41946d0092078741e4cb87933582c75118a8f. 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/QZNJX2156662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde51c3d638d7ba242faa6dd312a44b49770062b591c579b174cf82b67488748a. 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/QZNJX2156663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ba0ffea1d22d276b029aaa92f1628dbb3fa669a5877c70d8865ab5c0d4fdace. 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/QZNJX2156664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34ff8779088c144068dae4b2f8ddeddef81c32607996e8aa0df56b950ede93be. 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/QZNJX2156665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5044e02ba00cf64ae2a7cb07500458b0bfa0adb503e1e08e390736b7ee82dea. 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/QZNJX2156666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacb3523f581234b8cbc5d0c4de89d69211925e3028a7733bc041864503f17082. 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/QZNJX2156667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02593dfa3a5ff1562a8f6cc3a0ad6101a173e39ddbf90ba5d8ff3f8ff69d2bcd. 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/QZNJX2156668.