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 0x46f2acc9684986fea341ca8e2bef542eb3575b13e82db6d0f51a193ade77ee4f. 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/f9ad3bc7-ce16-43f4-a0f9-978e34edc65c.json and https://artists.proofprofile.net/proofs/artist/f9ad3bc7-ce16-43f4-a0f9-978e34edc65c.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 0x7373b029ed35ba6d1d3a21a6cff4319afd0a34eb9a3c26052ee8e9bbd4808558. Chain 2 (Bitcoin): anchored in block 958401 (2026-07-17T11:10:25Z), 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/BXBPF2200055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b8ebb61752de69b140ef54a136060b39dc3f5620c8184776b0b02f7b097b9e2. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/BXBPF2200053.
Bebo Pra Carai / a Jiripoca Vai Piar / Castigo - Ao Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42c500c0df542dbb49087a653db6884b0b06ec6c6322bf4d3c86f2d26bbd5ebb. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/BXBPF2200061.
Te Amei Demais / Cheiro de Shampoo - Ao Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdeb1d3adbd6afb16ba2ca6a5edcd31d75019d9dac1668f726686b268db56a80d. Chain 2 (Bitcoin): anchored in block 957866 (2026-07-13T14:54:25Z), 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/BXBPF2200059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10f7b05011c4ec996a7d9e5306575b0ba2f0388c5d74177d2808c0f606f519e7. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/BXBPF2200057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2b09de9717dae07c61a294c418f0be4082ec420391ea53550db73b77f69fca2. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/BXBPF2200063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb9f7fc50229e9c229458f38e8d5a45769c7d8c98210f3e0f4cb38e4d8eddb73. 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/BXBPF2200087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8ba671112aa27ca60a659cc4dd83d5494bcd61f085c3ab4e352063c5f7d505b. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T09:14:08Z), 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/BXBPF2200069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec33252b12d56a179794a4f515ff55c874347181a637cfd77620d4d17ae9fa27. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/BXBPF2200089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8ba671112aa27ca60a659cc4dd83d5494bcd61f085c3ab4e352063c5f7d505b. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/BXBPF2200069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11f6130da2213bf43790310a619e08947d644cc51de1d5b718c16fb6bd8d7f42. Chain 2 (Bitcoin): anchored in block 959002 (2026-07-21T11:47:29Z), 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/BXBPF2200081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74db0dc8f01e459e782be8a1fc5317af62b1193bf61a89645fccece25ea54d98. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/BXBPF2200077.
Nos Bares da Cidade / Programa de Fim de Semana - A Resenha (Ao Vivo)
Da Cor do Pecado / Beijo Mesmo Pego Mesmo - Ao Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ff666b3b6e14496d23d7b550456504efdfa6b91855d53c6d8bc3804db2b7260. 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/BXBPF2300037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a4945106bc9296a320a88c0d6d562fbcc0ec64d56377f49913dd19a009ad688. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/BXBPF2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5bd30e63f3f5fd2816657a7ac6cc4cacaac5d653c78766ceb0030537bd2752b. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/BXBPF2400003.
Entre Tapas e Beijos/Nova York (Ao Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x086f6fac74a4f49f5d1c0d1f256e90e73ef1cc8351bf06b9f25037f2d0210fc2. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/BCARN2500013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65a6ae53ff8009be686d4665d16545f3e40c76cdc717c6494d46b5254218036c. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T16:23:52Z), 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/BCARN2500007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x086f6fac74a4f49f5d1c0d1f256e90e73ef1cc8351bf06b9f25037f2d0210fc2. 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/BCARN2500013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46ba7423b7a971ab272e0eff363e2b64c8b939b4893051279e87870600d5e61e. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/BCARN2500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x213f21ac0b327fe994dbee3e22d0d97698c154d176ffd9504603569559585248. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/BCARN2500005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65a6ae53ff8009be686d4665d16545f3e40c76cdc717c6494d46b5254218036c. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/BCARN2500007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc00c31381e47e0821b59a1cbbc5942aabd43f6d7084414bbba47d182f0da476. 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/BCARN2500021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x086f6fac74a4f49f5d1c0d1f256e90e73ef1cc8351bf06b9f25037f2d0210fc2. 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/BCARN2500013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46ba7423b7a971ab272e0eff363e2b64c8b939b4893051279e87870600d5e61e. 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/BCARN2500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a0edddada4654db28db14bac695c1c17feaae67e5963f14b58fbaf96944be68. 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/BCARN2500017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b17406278ff0c3eda86299ae80aaef38d80da35a52da38d2d3ee3ed4dbb6a3d. 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/QZ5AB2469777.