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 0xfe76f29910d1271ab288f37b99963a29556292f396a874d3371a184939db0707. 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/5e1c2e49-b46d-4047-aa0d-e5cd80b8a1f0.json and https://artists.proofprofile.net/proofs/artist/5e1c2e49-b46d-4047-aa0d-e5cd80b8a1f0.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 0xe9247a6d86c581e654ed41b5412ad1310c6f86679af8079dc765256cbc39f018. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T02:01:00Z), 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/UKP3G2303544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea8e99a614c37bd83a479d697fe3545e8826148d916fb6a46acc598f2a346466. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/UKP3G2303570.
Paciência Joãozinho! O Bebê Aprende a Esperar
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb08375dce023d9b1fc8879f7dd08b42a1f71ec81184d472317c6ade2985876dd. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/UKP3G2303586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c34cb2e4bb4ecd01a3fee8eca25121a20e45670275097f72db9c737d21ba1a1. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-17T04:19:22Z), 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/UKP3G2303595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23245e9cd1fdf7acbb81a274ace7d983c1c4c726f6d35e113fe18851574c96cd. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/UKP3G2017713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6aff513c20929de53a0122394dd65a3d9ad3f35796048ce5320085ae4a07ee12. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/UKP3G2303841.
Não Abra a Porta para Estranhos Joãozinho
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dfd2899c72e9593d3325254669d07fafada036ed178a1a19666aadd80693cc6. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/UKP3G2303802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd2c5a2a62d235865c5a085c71829a4ec7b019e3dc195f57edfb337df5802ee8. Chain 2 (Bitcoin): anchored in block 958611 (2026-07-18T21:24:44Z), 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/UKP3G2303809.
Desculpa é uma Palavrinha Mágica Joãozinho
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87e367e9b9be31e96009d136a7e5017b1a984315d2f05a8984f66b2ee655ef32. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/UKP3G2304130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf05fdca8e91c01eb5a8816611a4cad6fd890a41b7bd5175508f19ff49ac8c24a. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/UKP3G2304115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdde8e32aa67eac64a53bab72c1f4a1f988c0950241d2d7b8b7c216392156b6dc. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/UKP3G2304431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf64049f73b29b6adfe78a94b7c6baec0bcd5963d061faf41cd439a791eb52958. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/UKP3G2304403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c4c0c3890386052038067c845b8613bde70ef64fcb145c6ad11b3c2d1465ba1. Chain 2 (Bitcoin): anchored in block 956430 (2026-07-03T02:22:42Z), 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/UKP3G2304405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86aa635971ef7e6403fca1123bc43d0174ffd0551899ce1d7459009ab3438ac2. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:49:37Z), 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/UKP3G2304412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f1e6ca159a89a0092277cf15b5c58d0afdceafb2f925c9855704216d26bf1c7. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/UKP3G2304410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95fced7e566dbfd008329f5d6cb7dc63954422a4594d06f9093997a88fcd8d4a. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/UKP3G2304409.
Joãozinho, Nosso Corpo é Cheinho de Ossos
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05979c197e833ab4fd23f1561452c7f7962215d314c4163d3bf8c240d8c01f21. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/UKP3G2017786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c1e9c12b3c0789605f2d244f49b094d901a01da1b06af44004e792673187ac7. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/UKP3G2017798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x990982a40a749e923ec273f00265b20ed8d07e5eff1553b86db2305392f1b85e. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/UKP3G2017747.