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 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 0xda631151a95381fb4710d7e324aa1b1f28ee5a4c5bb838930560b4d46aa5648e. Chain 2 (Bitcoin): anchored in block 953746 (2026-06-15T05:25:34Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a4583bd2-ced5-4988-9910-2518315a5229.json and https://artists.proofprofile.net/proofs/artist/a4583bd2-ced5-4988-9910-2518315a5229.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 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 0x0ae39e88695c74dce323d7697424aa4490ca314dd1cf98d55333bffa7b2e511c. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/GBWUL2255249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe76496fb64afe62111ea02b64a30a961591ebb567aa5a652efdc4ad00147928a. 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/QZK6K2274807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf8bc6db70b69836b64aa4a3c09142cd5e4020d092d35210a08c211517c30077. 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/QZHNA2210207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77363f8d1433fbda33789bd8b18863481ad12115a1025a1790f8d9a6e778594e. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/GBWUL2255268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43a5de089f19df2a28994d61bff7791d190d71a24657a2f56ad4e9c3a01a7473. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/GBWUL2255270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9293e798a27fb55853d4c093c6cf4f5467051019714559d5f764e2f7ec86dec8. 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/QMBZ92027034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ed37131d9d254764625cee22199212bda232b65afaea4f366901e1276de0f69. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/QMBZ92027035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1335d1de2c51b4aea9d02b8beb53505c27cfb2fd85f7bbd46598be828d34901c. 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/QMBZ92027036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8ca9f3308eb21a505fe84272fe28205d9d2c3a7a4dec4bb90d79115c99ca4ab. 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/QMBZ92027037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1145187d2f98a76ece753a81ecdb2733d94e7ca55db5ff94e8ea29de55db8a8b. 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/QMBZ92027038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ab039f6fdb832fdd0a5d0e103f3a07a51320a93426c9543b697daf2da35e829. 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/QMBZ92027039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1b277c2b7ce7b613977fd9cc9ffe9faa4c263b84ad0d59f20e925ad600aa996. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/QMBZ92027040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0d04f95d2968368c49628cfa06895021aea918bf3c27de85d056322a3994c7a. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/QMBZ92027041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68990689ff1b95d106701c278f5c0382a7788c866c63eb51b0cfff9f6d1e9f3c. 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/QMBZ92027042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x736bb0707737a30499adb0967d3046b6b1c660607a5891eb200aefe06b085452. 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/QMBZ92027043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb6613182f2c139f89745e1ccfc5b828a15661471d0ebdfbea31260852cb1e75. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/QZZEB2332564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cd5c15c433f821e18dd06f9081cc590d5bfe6d38f03654b0112637113df2932. 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/GBLFP2353545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8052e11ab8c487fba0c0fc0a948c2b4e9d074c25b9d450e60d12663b8d437b6d. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/USLZJ2338834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc64e7c4a64fc32acae0fc4de78b68155e5e6f5b860d6036bf08e488d9b601159. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/USLZJ2338840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9256860d66ec986efdbcb6a8844768890fb31196249aa6e11ddf2838fbb63542. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/QMBZ92017743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fea7324b54c53a4df2d56420899835eb829f60e2b4ba7010cdaa37a9474c8f3. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/QMBZ92017744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2be83e0b8663357f22712fafcd13ffdbc409197335d4ab85c7e710e45b77417. 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/QMBZ92018981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb551622667f508a85dae98a650e72eb0c558f554fea668a62cb0e6ed9dd56049. 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/QMBZ92019020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f7b4c5c196834699441213fe3db977c3da8776016b5108ab7b9ad9371a5ec2b. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/ARBY12100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a7ac4c0e598148a69a50499739b658748029e9069e430ab37e22e3d5878e8ca. 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/ARBY12100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81ee4b037cd04947e46ff9622a02a2dbce308944fcd8c58b5dc55e827a0cda29. 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/ARBY12100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x650ea642c536d75d4ce7968d1c843eb1ed281cfa1d958af533fa3067a0a455d6. 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/ARBY12100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3441788184e5167c0e3f4283774326f39a5e62e0bdfe9ddef1b5b4c1fee607d. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/ARBY12100008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4d73387895367582ede4701ea0963386e7cbdeebbb762622599df35fc09372e. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/ARBY12100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb493bf365b486bf47039bf2cd4190fa3085c514f55b51ce14864ea16ea63c27. Chain 2 (Bitcoin): anchored in block 960456 (2026-07-31T19:53:57Z), 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/ARBY12100006.
Hola, cómo estás? (feat. Alejo y Valentin)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c90e60cc8476e13d16af979cb599bd55b9f9d805fe6dbf9837795401ce6c52e. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/ARJAH2300032.