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 0x4c84db52f3cb6bcb5891bdc57fb3afde4424485eacd73c6cff59070baaf9ffed. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9212f0cd-8d16-4014-b79b-52230ef2fa9f.json and https://artists.proofprofile.net/proofs/artist/9212f0cd-8d16-4014-b79b-52230ef2fa9f.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 0x3f6bcab38558021916d77c1197aff7e6bc7cd86fd8ddbbb2afd29cc78e3e728d. 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/BR50K1700001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc14d1becd22f960e656983ce05e73db1d1e8d2cb492793b8c5b45aca63a67b7f. 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/BR50K1700002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafd9a8e56e6449ad0de86e8e273f70f3886360a1488c92ab031768c13dcf2d97. 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/BR50K1700003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01f6047b04fe086a82111f100b1904dc2cc0b4d351feeffd928de0dbdfb0b416. 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/BR50K1700016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef56eae9e5a173fdc01cc043592d2d2f38fe86ec37a3991904e9d3c518597752. Chain 2 (Bitcoin): anchored in block 958042 (2026-07-14T18:24:07Z), 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/BR50K1700005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1d448bf8bdf6d69784d8dd4df64b6fef5929b73fc48f81b2020dcc4dc3acb8b. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/BR50K1700008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x747b7d35dac94d0e547221591b850db50b94654e9f5b9bea5825d2d48e13f383. 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/BR50K1700009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9129b56b21ad63ba505cf56dcb3b4469226c59daef495982b13f8b80452cf937. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/BR50K1700011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66d36a823105d58793937086c670eb55db18296a1d2afa42a26e667a9daa8b26. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/BR50K1700004.
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 0xf15887c24e3a4b79e152c44f296052565c6d4de1aab1e117ea3fe04080f17d5e. 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/BR50K1700015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2125752f5ff26fafd4a7a2786be316ab05fd8d213b74e7e25fe9e4ab70a1f359. 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/BR50K1700007.
Ela Senta Ela Quica na Branca, Ela Senta Ela Quica na Preta
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cb20bd19f79839266537c3c7df83508290a36f1436139e2cbbd88f9c6083369. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/BR50K1700010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18611fa554eaf39c2f77cfaba693bef203ff1ed0b19a82a05c2fc79b02d3852a. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/BR50K1700012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23ad17b2cc1aaa51527c5e72915470c8774c059f4621ca1327382e51478c614a. 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/QZYFZ2438760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fbe334f1a06765846c044a1258813f807bf3d67544ddeb97fe2429edba6b0da. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GXD7G2406376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc130266f32355651bb9fcf0389fc1d06ee3ed65231ef32d3461c114bf43918d. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/BR5OK2300013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x246be55a8524ab4e5d9d059aa8e592a4a4e436a5481c8236e6904dcbdeec28f8. 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/BR5OK2300014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc76040c683c081043c3c9ddddb59b10a5774cf6dfc23b9bc7dd33e367dcb1522. Chain 2 (Bitcoin): anchored in block 960210 (2026-07-30T05:21:45Z), 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/BR5OK2300011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f5012899a80e1759203ad05590e12b84619a313efe4decc9075657824c4c60d. 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/BR5OK2300012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b231ecd2ccc92524ceeea7cc439dbba3c22e5737cb095005adb11d3a7a88b0c. 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/GXBAV2374765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13867dae6386c20f9e04b942980ceb3827bcbff354abcf74cd287772e4bba261. 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/QZZ662321984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51b3a6b6b9703ea8674dcfda7e0171ebe27b3ca570b292f9dd5dae1d2d050215. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/BR5OK2300008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71baa58c110c22ccaf70dc444b8c9012ca142118f07588c02dc29b379dc58acd. 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/QZWDW2306514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0384401a3d2cccd391b17f7968daeafb9d6d31687707fe8baae9a770f578efa9. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/BR5OK2200009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07d98375d4e527c45431df9abc3acbdc7cfaea9c00c49dff14bf9b0085a02856. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/BR5OK2200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x319efa60bf153c43f8f9c6adb45a48c1178ac11131c1b22b25f7310c06c1ad3e. 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/BR5OK2100004.
Senta no Pau de Pimenta (Versão Mandelão)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebd211749e6c682efd0e18e5ed65fa791a68eeaf7da1aaf3787d9598468e8441. 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/BR5OK2100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf557c4086d9999116cc4b9db20111bb90aa41df0c9db36109b514b12e4a83ca. 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/QZEQU2071828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfab6527f845c129e9f25f2f9c33de6ca4a624fb00e89768c6fb58c8295d12eb7. 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/BC3PG2306947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c0f0cde811b42777090464eaab90eec85d892a84da55f9a79bb00507d095fb6. 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/BCWK42300005.