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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa70099f1e6475221b9efef45b0de638735712f2c45d81d79177dff1db7bd36ac. 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/e61f6021-e046-44dc-9e99-66796b250ed3.json and https://artists.proofprofile.net/proofs/artist/e61f6021-e046-44dc-9e99-66796b250ed3.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66d1798ba58166d540a3cd1c5074a3476b331a1cac9c8f7aa1e4e51fb470825d. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZEQU2127968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc83385f728cbe509a4c291a0f331815c132a5061055761e5a1f4eb908ea838f5. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:01:42Z), 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/QZEQU2127969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda6e9d19ff76ef6d26069e9e65f989fbaf5509fde334ef222ca02e1417bc8ccb. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QZEQU2127970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe848055b2045ef0e699ceaeed73ef23033567526903a99b52015b0615697aed0. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-20T01:25:49Z), 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/QZEQU2127971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa1246a6f47c6a718a935686c86df395f557a718d1f43771e3a6db3d50a4295c. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/QZEQU2127975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5aa001d57b717c7f5035ec91d7b311b91bfa07615b3c4a623b3dfb94020a91cc. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T06:27:23Z), 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/QZEQU2133916.
Ao Vivo Capinal - Vit . da Conquista / Ba
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4937369a9b3d036db5108410244a93930bd60298d10f794560f5a20758404980. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZ5AB1908256.
Cubinho no Teclado, Na Pisadinha, Médios Lapada
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf30bfc9cb669d301d325e46cc12cdfe35b67bdaa772df298162f1271d894feb. 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/QZEQU1921734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d8898591462fc31f24a0010e24b137d6acbb2c0f6f8ba1019eaf09e10432e41. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/QZEQU2050074.
É o Empresário é Hit do Cremosinho (feat. Cremosinho)
É o Empresario é Hit do Cremosinho (feat. Cremosinho)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86ee52b4e1c8e31507f7c8e64c3b1ab0687c84ba9c1910d440a081ab434a0190. Chain 2 (Bitcoin): anchored in block 959009 (2026-07-21T16:06:18Z), 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/QZEQU2129844.
Me Bebe Que Eu Tô Geladinha (Arrochadeira Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41b00d1a75d5154a29dd296c1c022da034596f1952c2a79e196f00e72be03ec4. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-22T00:23:06Z), 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/QZEQU2207851.
Andou na Prancha Cuidado Tubarão Vai Te Pegar (Remix)
Baixe o Preço da Gasolina (Arrochadeira)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9b4e4463ab64c3678400b31ffca3f7c5ea816b06de29c299038fe7925f82526. 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/ES56F2300041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88dfbe971d5773a108bde91a6d1f3e187627dc80cbc058f3e703a04cbc713484. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T02:23:04Z), 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/ES56F2300044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1bc3e1f17038a65561eb15a2674cdd15a270c69bb2eb488520d4dbb82f1256b. Chain 2 (Bitcoin): anchored in block 958706 (2026-07-19T08:50:34Z), 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/ES56F2400110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fb6029ac1d770ab1f1d7fd7506655e19d66dc8d2d59c400580a591e15a1f065. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-22T00:16:03Z), 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/QZNJW2469353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x243173f11105d0e755810165dfb5643f645f90f29632a610c15b0a04f5e660dc. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/QZW9K2484758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ff304e2ed141f3fb87ed649de938eed17f09ba922fbfc6fb083c92361cf419b. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T14:03:58Z), 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/QZW9K2484759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4174b9d1e8b71b33d3d5ba97a6b71e079a876d667646c0f41676a5a5e34739d. Chain 2 (Bitcoin): anchored in block 957868 (2026-07-13T14:56:55Z), 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/QZGLM2581424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ff6fe249201d2c68077421a78c24667f680f8ef5c44ebcf8e1d6b727e5d1c90. 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/QZGLS2503427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8eb03dd40d4090c267e5449476a12028a71a147bdb652f37a4c04ccbf611946. 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/QZNJW2527037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6d34c467de2c482cf81c8a90d59605c74cdaaebeb97d18d447de91d67fbfb64. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/QZNJY2541030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a0004b2754cb27183500959e535eab62d0ad3a0f68a5fab066b6708ae4f91d1. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZNJZ2583453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb85f5ece10477e20d3b04ae69058aadc56b11008dcc0e6f466b96f140479a9b8. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:22:52Z), 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/QZTPX2508147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x575f5f77a9771e5b3a82631b3c28483c8a2e4211074e0a600d4a7a35fe7208f0. Chain 2 (Bitcoin): anchored in block 958830 (2026-07-20T08:22:57Z), 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/QZTVM2522699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaa655d96645c3a8a6d1130a2a3a25c4fc5558078f3b22ad789f11a11dea7bdf. Chain 2 (Bitcoin): anchored in block 958531 (2026-07-18T09:39:18Z), 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/QZTVM2529733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf127f3b64478b466aa4240897cb72e9f04ed77f25a72e83b96383ad937c7297f. Chain 2 (Bitcoin): anchored in block 958197 (2026-07-15T23:27:12Z), 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/QZTVM2589405.