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 0x87696cdfdf95174818a1914da596ef60b754aa097c1eb1a672e47d1e53d7b95e. 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/8e2e884e-1b24-47ec-8235-24443addfae7.json and https://artists.proofprofile.net/proofs/artist/8e2e884e-1b24-47ec-8235-24443addfae7.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 0xce9441b566b9b7e60fe1aca48c44c96e06e6b5bcc585ed168340c505a140d659. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BR10H1100007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fc8181966fe25f3d36eb2ed03ab15b7d36fa01152e13298f70755524d6545ba. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BR10H1000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0bb2bf2bf3b11cc20d9a8c1636729e002d7236fd9af9638d46914dbeaa9640c. 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/BR10H1000002.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2a3dd8a95edb197bbf8b69857e7145c43a8130592dda9a0a9890591b4ea120c. 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/BR2TN1300014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f552fe6480894ece8d887e718af03efa69df0376981d2ae4b1df37600a07132. 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/BR2TN1300023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31a2575cc19eea8928b2cac11ca16bc4df19f09bbbc34c5127039181b5e6467c. 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/BR2TN1300020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3739e9c12c766fcb1672d670acaf0843b6476b1487489dcfe22ef3e6ccaaf65c. 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/BR2TN1300016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dca647bddaed83cb3d73c87ede25c44943c3e65ff8517fb78353fa99b7cab42. 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/BR26B1000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fe27b474670528c8165c0af212e4fcb25fa42b7317393e82cedf16451599b2f. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BRSC41500185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x303b3e5fd85c9e229bba8b27cceebebbed07f7a99ef44693a486b4ad1070b15b. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BRSC41500186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd981e53d9f11b600526aad4cfaa7d4ef6b3dd8241cf617841ab5589cbec53e36. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BRSC41500187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x967e95e7715c5c11477268919ce0a500f2f5e0a2665823eb6341fa1172c4874c. 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/BRSC41500188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe324dd2d877f19ac1d786bc51ece491b80df3d8ee2f703fd8a45c96abbfdcf3e. 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/BRSC41500189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa051576c771bc7a559825ded823eacbe578f23a3fdc8a1b28b7582b470cc375a. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BRSC41500190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a83ef2e026668939e62ab07bb814f54904cbfedbcee621c845f9f777bd996a0. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BRSC41500191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2387fee39d4b6f741bec21b235458c0e7a35b2d1d2718a1b0ec5acbb8714e6b4. 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/BRSC41500192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c1eccc3db57f392dbea63a68c4979a9484edd93aac739ce7cca753fb3ac3240. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BRSC41500193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6f3db7d5b6f87eef13ebcd5ff3d8d7e117064747b8f1af8e3c9e06269352d94. 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/BRSC41500194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9faa027e37f927db4cd5f76fe327584e3fa4b60622ade1c0431ccdbf75ff2a79. 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/BRSC41500195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde6ab082de8055194fc2a50049570948fca1eaaf6897754598e2aaaaac4252f9. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BRSC41500196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a29c9baf3cf76602cf2204d176866c6968c770a4b10c1d105d87750c021f99d. 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/BRSC41500197.
Coitadinha Bem Feito - As Canções de Ângela Ro Ro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e6525ca0db4b3df3b825e475c508330d8487a1f2da348a5abd3a7d9d40b2ce9. 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/BCMP22000006.
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