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 0xcdd9074468e05b32ef6ef242fb3ace464ba0905232925d1fca083afc8c1b2b1e. 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/9499420d-4b5e-4f08-8c04-8e371a1cc078.json and https://artists.proofprofile.net/proofs/artist/9499420d-4b5e-4f08-8c04-8e371a1cc078.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 0x68595503439ffeda66887e330cf26cc932eeca93d662bc34ceda1f0b5c59f25c. Chain 2 (Bitcoin): anchored in block 958130 (2026-07-15T08:37:45Z), 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/UKXN22071699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x850ed52ea8094560a93f81b78e33ce842bd4dfc73c015fbf22b6f8fdc088e121. 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/UKXN22088379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd190ba5f1d90c846e9cd66c83e8b51dcdabbb4d12bd07a96b3b8835bb391603. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/UKXN21919213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f63c49fc1d7d371217fc0dff75089c2ca127d11d1db1e29cc03e91efe1f790c. 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/QZK6Q2138335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc73673f0fe3c3a6d619673f9b3d3e0f4716998ebdf3f719f7da70fbb25a1ae33. 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/QZK6N2134390.
Me Chama De Maconheiro - To Fumando Um Chá
Saio De Casa Com Dinheiro - Calma Respira
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe335f02abf5ae7c0444520abd72bd024a076a3f1cc8868c04cef225494c7b78c. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/QZK6M2175508.
Mega - Vou Te Botar - Chamo O Teu Vulgo Malvadão
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b29294910d947545031d86048aa6a6fce0b957536b8750fb16ab76b74eb190f. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZMEP2197242.
MTG - PARA NA FRENTE DO BONDE - ELA SEMPRE ME LIGA
MTG - POR FAVOR SEM BRIGA - NAO ME ENTENDA A MAL
A Glock Ja Ta na Cinta - Seu Nome É Larissa
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x625d0d9e5a7e35e5518c40dc75ce983af5c90d792a24530402ed3222b43f7237. Chain 2 (Bitcoin): anchored in block 958696 (2026-07-19T07:45:31Z), 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/QZNWZ2148549.
Ela me faz de cavalão x uma loira e uma morena
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c1a33a96928d990029cfa50841a2d21c48f870e2b1a4a77685ffaaca98e4c40. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T13:01:04Z), 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/QZKDK2247484.
PORQUE VOCE VOLTOU ATRAS, EU QUE FUI O ERRO
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68a4419c31b96dd9fded631f593e5358bb9e0d58b375c85ca2e9301c96e4fef9. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QZNJW2247217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e82f2b90eeb449f2907e4c422c7be6e0fa8e294a3f570af3ee1c9daa38b09ec. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/QZMZ92375113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6abf493acc9c421f498ae7b38a2c51de85feb82f584aebafca513ce49230c8d. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/QZNJW2321283.
Trem da Putaria - Hoje Eu Vou Cair Pra Pista
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae0f798e94d8eb15bf742e00c6403688fabbe83c09f030b1e7ff156d3fc399ec. 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/QZNJZ2324865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea52459a0a966d096adbb92ae5213f78af796b4d625579a150db795b50944bc4. 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/QZGLM2475494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8f5677bf323d994f2c5f126cc46be077289ff12ed062f5882262c195a16d9cb. 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/QZGLS2449266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa13b22ca2f065d310127d85a9d2cc5f3a63166c16a82de41d3d92f18cc34d201. Chain 2 (Bitcoin): anchored in block 957065 (2026-07-07T16:43:21Z), 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/QZNJV2404993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5663c2196bc9d6e6193175035838eb4483f4fe7f95b56ad3b88f92d1cecae867. 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/QZTAS2431156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b01593e473ac024c47a05c4fdc7fba9c243e6af57d785f60621f472d67f0be2. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/QZNJY2415871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bd004f7af54614646b276913bbd359729c05ab3a4ff1e7a5672d8b3d2e88c30. 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/QZTVM2422063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4c14b5894528afe82dcb3c6ae6cd839b9fac0720450a227b9ea9b7ac5305ddc. 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/QZTVM2421971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1004455a61d317273a233f83b85ff6fd4a5a448c20ae8c8eca6efb98f6973461. 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/QZW9K2418760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadfbcc91a1712fad94c81c86de8058bfb0e16d47bac1b2f4c22936f5ff267b5e. 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/BC8182500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31b2f900dfbbdb4458d907946f4f382f129d008ec4ca0fbf6e9e6933d329295f. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZNJX2596645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc0b57d095e4cc939cad376b4a32ca869f4acd94cbc1182e6b4a101b4ca78f91. 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/BC8182300221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x877fab03f68f685f5dadde3f4a21f9762f610fce0d4baa1529ea1131908fb178. 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/QZ5AB2442871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf186460a805c6b5e603c24e9df040db90c41169c5a81f4d198df49d37ea5ddcb. 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/QZTPX2497417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8c475bd884ca8d51a20b61eccfb16bffb1094f24ab82f2beab84166280b550e. 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/QZWV32419180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1490af6b04d02a9e7ad85cd3a5dd66aac438105ea9ddad278db2b8f1d23ec63e. 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/QZMZ92474119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a78658b33664ecb4fa5ecd5ba6945163154fc4a2ed5f90da33c132a26ddf4ce. 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/BC8182400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bd7f59d603f21156b4d56f78006d8487468042984bd3a3913140629903ee9f3. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BC8182300261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1581f0f0a27e00a63b09e7d5bd415c262eb9993e1f8e17d5e4feebaa13917254. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/QZGLM2472126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4031628debed415a5a37732fedcfa7a8acf9389b79b6336f5affe54c8eae595. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/QZW9K2306247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fa0b45e5aea690cdeb30e254058fa796c5bc630a9d80768502f7e02d286442a. 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/QZWV32441063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ce943937117ca7f8fbc9cc8adc7f9dd60abe9d799cca9c95e989dd3b162a63e. 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/BC8182500024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef7cbefc40f563c56719398bf7e9fd941919f8207986d26c8d6e792965f2ef39. 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/QZGLS2432406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa86d0e860bc3e74dd4180e2374f4c7252e2889d49f7a8e4b7d2a2f93212e7fc6. 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/QZNJY2405195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07dbf849dafdf8998acd3257e2bac8e291bc132799af53ab6eb48e2a23257a35. 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/QZZEC2455299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1648cc8be574d2e3313e90c2add5d6801f4347bbe178de0191547e5b64e4a9c5. 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/BC8182300132.