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 0x00df7a60aa2a37e75e4b6b1071a6da50610ab75bbbd8650a65dae549cd186958. 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/e803e99d-67b6-4fcd-8cc3-3b6f696fab5e.json and https://artists.proofprofile.net/proofs/artist/e803e99d-67b6-4fcd-8cc3-3b6f696fab5e.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 0xe80bbb788c2098dde956c12ac9f53aa7e1f2255827a9e72ef94fd769ca8fdd65. 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/US63G1100034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d26a1d38ce6bd02308a598b4b6000425c960b2dec1d02f9449c0db5ad4f2266. 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/US63G1100035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7dc944d0188788147eec0a4c1b916a031ae510f4027d47a2ea8fa0fb397aaca. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/US63G1100036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2141bad28782c5d173a480e191cfd44f77e9f5dd23bcda1e8d005768e267b1e. 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/US63G1100037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3da8d82d7d46d0ef61ffa9008c8713c3b7d9883241506239f16e7c37e768ba3e. 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/US63G1100038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd154f299a3c479b4980420811002ab4234183ff148c3b8ff38549478ccfc5a52. 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/US63G1100039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda17648d23137d17944e5a8c28dc751ea609f2addc43921940b62e7e01e8db2d. 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/US63G1100040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x864a8d245de56b0b49b8119e73cd28c694e6cf970d46bab411869d5ad8c6b9f8. 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/US63G1100041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x361f1367d455157cd7157f383939a50e0ca6064eb97f988d3af44d0d1e8d6f61. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/US63G1100044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86249830af42388a60d9c0245fafa30282e935484da40a9cbd05807897450e55. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/US63G1100050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d23f901b4d0b9010c23c8d2b6468054b33159a9bf017ba93ccea5554a884bde. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/US63G1100055.
Bad Behavior (Extended) [feat. Ulises Lozano, Myron Glasper & Billy Gould]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb82921c6b5edc52cd74660926be5287289ae74dbf4616447c629363460e6586c. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/ES71G1412674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb82921c6b5edc52cd74660926be5287289ae74dbf4616447c629363460e6586c. Chain 2 (Bitcoin): anchored in block 958579 (2026-07-18T16:26:17Z), 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/ES71G1412674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x382be5bed14f2d555ef4ddd7b6ebc755aefbed5ecb06af506a5ffd70aafb174b. 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/US63G1100046.
Mexican Dubwiser (Clickaporte Ibero 90.9)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d8a8af8c207052b0b75844d0b432f344f096571aa5854e2b21a3ff4096de4e3. 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/ES71G1414070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9948c9fef7a9e68c1908b6c69ecad1833935b7323507d4390b0b667bd88d33a. 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/ES71G1414073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36ce8c7cbbb6601e036a24423613a03bede9c0148a4f8949cc10bfdae941284e. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/ES71G1414075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x279cf16962190c21331a853aec228ded4604a0ca04598cca1d4fd0b980948ef4. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/TCACS1632082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe786e6ad008984ea702cb96f8275063e6f3431e59a4a229f0629ee1e168ca707. 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/QZNJX2288435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86c6bf8fee787e7616df68f22c7afcbee80335101df41e5eafb45041cc30423a. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/QZNJX2288436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35ff229f4492b230b361c23c9bf6d50e7c6063b99f9229825d65fab61a73bea3. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/DEH262116301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd43ce56b88461d9699e82e8ffded9322bfbbe54e59ff8049957395418e1612f4. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/DEH262116303.
Cumbia Of The Great - Illbilly Hitec Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x003a059ef5e2cf8fa3f943ad22ccf255f09db2595c4a8719ac6c17c20aee63dd. 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/DEH262116305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaef754aaf4fc1762a9161c74be6e414d0cfe7a01a482940e70c3587b0b8e67a0. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/DEH262116306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b44c62feef3b3dc64722528172e71624935b5a4aca7834a90c68a33a52d81f0. 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/DEH262116307.