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 0x72777c92a41204e8209bdec55760671d56b839a2cee9b8342461bb10d05d6fd0. Chain 2 (Bitcoin): anchored in block 953924 (2026-06-16T09:52:28Z). 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85015485d563bc2aae222efb35644bfcf414ff7ce870e26d0e6e7a7cb01d9f10. 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/BRPG22000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40828a27a8b67cdedf4291d55731e80a3967dc992268c18791480b82bd029de2. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/BRPG22000005.
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 0x8aafbee8e841e9c15f8ab1645a2d8261501c53bf5ed92e3711f41fb86c1a1b86. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/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 956312 (2026-07-02T05:09:12Z), 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/BR1C11800004.
Os Olhos do Meu Amor (feat. Mariana Aydar)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a2fb5ac9b9d6befee94ba6a35bcf54de575de28a17df57dc748e7b485164355. 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/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.
Receita de Samba (feat. Nicolas Krassik & Alexandre Rodrigues)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96878398f98b1fd388cb17d52bd35379b1d16857a67d9b7d0a407b1bdae93ff4. 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/BR1C11800008.
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 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/BR1C11800011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47ff5692ce2455f54316057b21d2755f73c26f14f0efa5393191144014656b54. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/BXZS71900009.