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 0xc284f985847026511efc14b4017d404b11a20473a66d8178c081433f67be5dc5. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/53a06fad-8ff9-4f0f-9656-45272f6fdfa2.json and https://artists.proofprofile.net/proofs/artist/53a06fad-8ff9-4f0f-9656-45272f6fdfa2.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 0xf3c1f0e9db32326e19dde61912bd9fa6783216446c388dd7ea8828546e394eb0. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/USJE61701017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dc6b63d431fbc0cfb7506d0ab9b969fac686fb1a2fc1689f5560a2482871acc. 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/USJE61701019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ba981d10ee2ce21a3c5eff03699a4990f5aeaa58dd1474d681db1dc11d30ff8. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/USJE61701022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x153bb712684019c8e6687dd4c064148101497c5d78aa98beefa71fe48cc11db2. Chain 2 (Bitcoin): anchored in block 957745 (2026-07-12T19:20:20Z), 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/USJE61701025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x112e90e55c2d50c5fc370ef888cc9098a7588d465011bfd1ffe19b121afc600e. Chain 2 (Bitcoin): anchored in block 958554 (2026-07-18T13:17:01Z), 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/QZDQH1835776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57a46b09d97f8800414af42156cba88b52861a9ee1857d36cebe64bc174ba6a4. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:33:20Z), 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/QZDQH1835694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96f968e561a303af4e4386224bcf2db6b4f4acb554a83dfa9724261baa109b42. 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/QZDQH1835687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5f5bf204ff89df3ad93276a1a1841e168fa17fc7f658c9b8bbc1a4a2a0cd864. 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/QZDQH1835704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4726e139abdde8a8a0deac5b189f46efe0f43b23fb3a29f997d718191bde62ef. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZDQH1835594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x492ae9e23a5a34136d225c03a91ec79bb0bf0078842e94c3559a11ec8319a6e2. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:05:21Z), 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/QZDQH1835727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1b5aaac8de6943a81f756e73e1c69a16ee02b4876e0ea477dc390232af3634d. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZDQH1835611.
Champurrado de Cumbias 5: No Voy a Llorar, Buscándote, Entrega de Amor, Agua de Vida, Cómo Te Voy a Olvidar, Corazón Adolorido, El Pecado, Perdóname, Maldito Vicio, La Carta, Poco a Poco
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb2fd38f55cbf67e3d958c1d395834824eada80e3d068021e36a522187cedcae. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/QZDQH1835790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb74252cafd460da16b39a4519d686808c395755438c5df41cc8decd6d5a282d4. 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/QZDQH1835644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaa8a905125ccff3f4377652aa989dc59d610538672b4f3b83b844ac95b0c53e. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZDQH1835595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d659536552392c6d86166b640e28812fe5f49ed7f60ba8df7e7b43ba07e773e. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QZDQH1835689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54b67566c06657c309a58c9e89cf971ecb82a6643f0ea9542ab8d9246c6611b3. 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/QZDQH1835708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78dd7b5339027071216f9c37c2f2b025490bfb30767022e17056a582e4cb979f. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZDQH1835680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09a220e50df666568d8912b4af9bdaefa7d47b52c675a800de97a76055a63fde. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:46:51Z), 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/QZDQH1835778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4db3482d3da387b2d5601afe632ac62a5d743f8b0a81fcb6519dd41c48662d5. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/QZDQH1835779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91e30e2a8ef1d1231864c81511f016d68bf371a0a1f184e32dac85cd3a97794c. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZDQH1835603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96f686af843679139e4d0990b0e08a8ad2d75186765565c276f6eca3d5af119a. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/QZDQH1835782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86d397602174ad91f95dac1447216831a2539d13baa15a95514dfa214637452d. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/QZDQH1835633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70dee61e14e4a0f693ceec8c5438e1f8b5ff3de968d3306822c86c24ac0a7af5. 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/QZDQH1835564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d8f07d282c3840bb6851f38e89bd13d9d3cdcf665e2fa72d3164bcf8fc7f936. Chain 2 (Bitcoin): anchored in block 957744 (2026-07-12T19:15:44Z), 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/QM4TX2547191.