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 0xa3aba79e3841dccafe9cb551e1ee1692dac9a6df1f6133ba131692f5c65d58aa. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c618a6d1-1ace-42c6-a7fe-51927eba1210.json and https://artists.proofprofile.net/proofs/artist/c618a6d1-1ace-42c6-a7fe-51927eba1210.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 0xda3783b3a5d61bd4e4d756c829f0558d040c854a7813567a932b1864bcbf9132. 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/BCPRM2000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x335053e1d8d16449b8a9d72114d68c49bb484aa4ba639416273440b9e9630081. 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/BRXRM2200001.
Reggae Brazuca Colab #3: Amor pra Todo Mundo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x273dcfbf4f94bb28df55ebdde4c589bf442b049742081ffbcfebc6e068c16760. 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/BCPRM2200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc45ac0d53ccfb8e1e1ae470c7ffea6cb823811bd389c16f8cca5354c0da17a57. 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/BCPRM2200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x110e3d2e6c196545b014bb66ebd8a4a404bdd6c02afb7a847662dc1d4a98021f. 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/BCPRM2200005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04c857710410a7986450c945ebcb2cd836af2d99e3d2b6eebaed4f4e7b1335c4. 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/BCPRM2300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x171056444b1cd617ee03ae8eb2b2ae7011b6f2953869eea4aa96f9c1aca5a454. 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/BCPRM2300003.
Bloco do Caos no Estúdio Showlivre (Ao Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27f22e6ec651ba6a834ceceb9ce6977c6651ff514e1e33dae540b4de5d926021. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), 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/BXSSW1805002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ae5a215ee1b3939787b535a9980f4c0fd8ee203169913064cc4bcccc5587014. 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/BRXRM1700005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a65491564d3e857996282907501e3fe279a9033a0fd960f106c261ef4e55d62. 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/BRXRM1700008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe72e59582889e61dba24b000440fc5650eac4f56130f67d0dcff72e329ef6a79. 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/BKPYD2400010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d29ba6b7670742d828e4144711db729aa61cbb06a15f14ccaa8483624e0982d. 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/BXRXE2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35e382bf3157086768f271fbf9d4767d5ea5adb2ad2a66beb4308b26901d15c6. 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/BXRXE2200013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16d9fbc481874836ad0e29f8a38c914b9c0d50b6f6f82755e4649c35773ef39f. 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/BXRXE2300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e5e4948e99d5937c1cd586434512f871e7290fd6faaff87d92667db7fcb9dae. 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/BXRXE2300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d15d0d290245d7b59164f1cc7853d80b355592bb25630f2698b1f0eabb22926. 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/BXRXE2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35e382bf3157086768f271fbf9d4767d5ea5adb2ad2a66beb4308b26901d15c6. 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/BXRXE2200013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b108d5e1e5562326f6c9044b7f20bdbd5ea969f53b6ba5145d44ffcb5586de3. 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/BXRXE2200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97b6728ab27776bf0e3f6eb4814f98a7c5c405e009777bb0bbc99c7082990e48. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/BXRXE2100016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5284875870f7ccf5e4bacc08c455dec1302d53bd2c2467d97aeb0e12939c16c3. 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/BXRXE2100012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbdd24e7022fa0a1a8206e978041c6809b92d6287f0a28e87f960c32a902d4eb. 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/BXRXE2100006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88bf2dae75153b89724e85a7fbd5cd2eddc747460f77d9f4329b21d419ce56f1. 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/BXRXE2000009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd1928161c791877a0c0459c538ee352e98080c870f608b81c6495153549cc9b. 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/BRXRM2000001.
Na Trilha do Bloco #01: Boiçucanga (Acústico)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x880f1cba7275dc7e4a68b7ec15df881ccccc6ddf0a5857b8c81d336c081c8568. 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/BRXRM1800005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a8ded6eb6724f24d74a0d8f60f4eea45e653d84171aad3a7873cd8c557d901e. 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/BRXRM1800001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f84aa7626d88f55e26296d1deffb5c72b6e6eb88aad031740b81449d4f49da6. 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/BRXRM1500005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca863b949d488debb955004eadd094e792fe55d1dc1b5c0163fbf8417c6398af. 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/BCL672200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38b6b3778103b2ac2ead6d6ed7b4af787a39e039afe4a04185b4f25a51b061a1. 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/USL4Q1857774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda3783b3a5d61bd4e4d756c829f0558d040c854a7813567a932b1864bcbf9132. 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/BCPRM2000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24b66cf22dacee949fdeb3b50725636392c42b9e1706b6a6a391e7682de393e6. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/BXURA1800001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c6a94dac03a7de12eb04b324d97e0ff462a5f45658feef7b0fc2aa960050955. 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/US7VG1514638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5fa61b93801acb9a523f4be8002d956530f314cc2045c7cad50c012849eb03c. 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/BRXRM2100002.