Martins may refer to: Names Martins (surname) Martin's (born 1999), cameroonian singer Mārtiņš, a Latvian masculine given name Martins Amaewhule, Nigerian politician Martins Azubuike, Nigerian
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 0x72777c92a41204e8209bdec55760671d56b839a2cee9b8342461bb10d05d6fd0. Chain 2 (Bitcoin): anchored in block 953923 (2026-06-16T09:51:37Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1cc577ea-0d0f-41ac-8e31-923767280926.json and https://artists.proofprofile.net/proofs/artist/1cc577ea-0d0f-41ac-8e31-923767280926.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 0x85015485d563bc2aae222efb35644bfcf414ff7ce870e26d0e6e7a7cb01d9f10. 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/BRPG22000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9b989c549cc13d82482c918e5e31e98e15b91539f942ba96b454d5450803328. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/BRPG22000004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40828a27a8b67cdedf4291d55731e80a3967dc992268c18791480b82bd029de2. 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/BRPG22000005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57c49e0d2dc53a81e0fca041c14b4085cbe3e1a8021cb8cd4e679b038aa3f710. 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/BRPG22000006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf67d06552d93225df4fcf6076e6de2fe61aa9f5230ab65dc2b22858064bd8206. 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/BRPG22000007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc655a33b2ae647b451d0c9a34550fbb48cf17e7757fd9b018440fde2bf55e08d. 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/BRPG22000008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b41e08fc3113bd9b1ec41d4f210c16cfe77e03d756d721e12547e81e1de7823. 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/BRPG22000009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7539a7b895388d805618c09885680a408d1514887b421ab7c5f9c94a26c0f30. Chain 2 (Bitcoin): anchored in block 960193 (2026-07-30T02:05:19Z), 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/BRPG22000010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a9271c306689dac47ed9dd5cdeb8aece827b5d7ff3a78d41e938b52e2bd38e1. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/BRPG22000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0f133ccfc12b184bcc2890dae4d3672085c1f31f60fd137861601fb2ce14ef8. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/BRPG22000012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2cb0807eccd58296aeb0bb8bb8eebe5eca0adb94f4d83fde52c7771c0f09d83. 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/BRPG22000013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53d49b5c925c97fd15e72753a878bcaf452b62dfc8b50b96340ca538232d4645. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/BRPG22000014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd67b92638da3fcbfe90b4805d51f01e74ea1e47610ceccf0c00eea77b83c3887. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/BRPG22000015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aafbee8e841e9c15f8ab1645a2d8261501c53bf5ed92e3711f41fb86c1a1b86. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/BRPG22000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85015485d563bc2aae222efb35644bfcf414ff7ce870e26d0e6e7a7cb01d9f10. 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/BRPG22000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0b7aee653cd668147bbc00b2be8c6a66a7725653af647ddf9c351674987fbb1. 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/BR1C11800001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x386b34c0f86c1f962d09ac8bcdbb423986370d1f72e9aac7d4548c622b8cc9f3. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/BR1C11800002.
Upa Neguinho (feat. Gian Correa & Grupo Bongar)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf77ad8e4a15f62ec7e2126c07670c0092ac6b20db36f17fef4a857ea888dcfca. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/BR1C11800003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ca3e5cff267ae409639897bf5fe9fbb964727463295a8550809df62eaae9a80. 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/BR1C11800004.
Os Olhos do Meu Amor (feat. Mariana Aydar)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a2fb5ac9b9d6befee94ba6a35bcf54de575de28a17df57dc748e7b485164355. 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/BR1C11800005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d0c5eb9cfef47aa53c12a22edc9861c578c5f613207f14e7d49c4784d643c46. Chain 2 (Bitcoin): anchored in block 957067 (2026-07-07T16:54:37Z), 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/BR1C11800006.
Estrela Sertã (feat. Juliano Holanda, Hugo Linns & Gilú Amaral)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d10546bd044e81d88dd1fbf5f3141db5018591cabf371fa5ac5e05649edca13. Chain 2 (Bitcoin): anchored in block 960113 (2026-07-29T13:38:16Z), 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/BR1C11800007.
Receita de Samba (feat. Nicolas Krassik & Alexandre Rodrigues)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96878398f98b1fd388cb17d52bd35379b1d16857a67d9b7d0a407b1bdae93ff4. 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/BR1C11800008.
Forró Pra Zé Jack (feat. Rafael Marquez & José Demóstenes)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a03a77cfa1f6091106c9bfd4a8af8664d237a11d81683d637e1bd3f737933bb. Chain 2 (Bitcoin): anchored in block 960163 (2026-07-29T23:20:38Z), 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/BR1C11800009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ee2ead3b52040713a8a45fb0e3711a90d104548b5c5218d03c483439f9082c8. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/BR1C11800010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x221e3c70603729a402a5ff72fe471292451e35ddf4ff36ca1d264e52ed2e54a7. 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/BR1C11800011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x842d3a51b70318ed1eedbdd663f796f4595c20120394d544192d84a1ef5a1f8b. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/BR1C11800012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb279679cc9fe844c56a64c8a35c6da3e7172652af2a71a50d9d86bbc3464275. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/BXZS71900003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x082274770b404e0de830cdb561f74a802ed11229b9ad59fd01a7673b639fd39e. 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/BXZS71800001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6519651e7bdcb206914fe987c5f52d95e45887b9a38925afc2f96fa214eab563. 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/BXZS71900006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47ff5692ce2455f54316057b21d2755f73c26f14f0efa5393191144014656b54. 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/BXZS71900009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b34aa3692334efa53b2087e6ad2cd3d9bb201935d5a573238d413f4d3265f20. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/BRTRB2082583.