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 0xa10a4d57a839562bc9242701b2c553fef5fb0025f4989c3d9e1adc53d2b868cc. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/90e32893-60a1-4530-9703-a268dfcb3678.json and https://artists.proofprofile.net/proofs/artist/90e32893-60a1-4530-9703-a268dfcb3678.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 0xf8f80c9155e6deada7dfa6620f8d895461e0657ba84ba78a8eba8f81d148dd65. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/QZGLM2342463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84c87a8d0b0e3ebafe0f120f8f5c911aaa55f1df0b33c50819d2266e73709bc7. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZW9L2289131.
Quando Eu Ligar Meu Som Melhor Abaixar o Seu
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d1e4c5d531206181848f83c02ef3642b8bc5a3b3325e5a82b02cdfbfc38f3ee. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZGLM2365530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51b714464c830ac6f75a3378f5aa6c070029e95fd9b2b5b1cf482b00d776a26a. Chain 2 (Bitcoin): anchored in block 958667 (2026-07-19T05:04:54Z), 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/QZGLM2332765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1d6d7f8bc5d0694255cd882e112708b08d0c80c77b2a2f54401b953ca680160. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/QZGLM2380124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2e1ea44b78e5d1221d0baf35f5e724603201c029dc7b9df46fdb210a26aeedd. 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/QZGLS2307315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb734dd669fa07ea9606c920a8199bea612b0084a5f19ae9f9fe0427facb5d2e9. 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/QZNJV2301317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01e52bd06dfc8ad2def9b46e1e85a790e4351bf07527f099c979ecea61df0e3d. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/QZNJY2393312.
Aqui Tem Grave - Somos a Diversão da Noite
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd92056a3ae8ff9e58e09e0c18a4c54b46ac7c008344d4ca450acd8d14030ed31. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T19:54:34Z), 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/QZNJZ2304438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9f8e4ca5bbcc2845be0479cf26e8df82b0aa359fe2a870b1e062b3ec37d735b. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/QZW9L2366965.
Somos a Diversao Da Noite (Aqui tem Grave)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc203e8cd389e7ab6026e0727abc3eced9958eda9e90a003758274301416ee005. 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/BX4IU2340974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7d18801487c5a537478e1652cf61fcb77e471c0229e6d3ee49d3b11911aa445. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/BX4IU2408629.
Somos A Diversão Da Noite - Aqui Tem Grave
Abala Os Sentimentos Faz Os Vacilão Chorar Com Grave
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b711079e0774194a2f47b62923f4598e7f9e9c3a33b36ed2f8e657173330b14. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T18:42:54Z), 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/QZK6H2424230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb91590b3df06c4d38e51d30771968192a4b8682b26c76ea6724069fbd170bf47. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:47:55Z), 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/MXA3V2424782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33b59f5b417f7447bf3f12ea0f2bef84370d0fc9388ffcb5d2465686733d9d4b. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/MXA3V2430636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7fa69b53e04f7b17acf921002e0e6b4bbdfc269e66430d1d79bb4723a5bb014. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/MXA3V2430659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55ed727e53b751410b93be2433e5d5b54b4a5ee1c1f52f517677297157dda574. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T07:27:45Z), 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/MXA3V2430642.