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 0x732fc1597002de77b8dc28fe86a4a8f7af51343b8b59d9b63f59e038209885ce. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bd1df5fe-c90b-4f9f-b7cc-7ca2f167962e.json and https://artists.proofprofile.net/proofs/artist/bd1df5fe-c90b-4f9f-b7cc-7ca2f167962e.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 0xfbf2bae024cc9fa5c42a2c6fc5f7c0fc144cac6bb0ec6cf51cef0c02187c45cb. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/USL4R2345638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x602772b096b5c3e368c9a10dc55b4c5f3bea2918c6c4400779e5af8d16d02b0a. Chain 2 (Bitcoin): anchored in block 960198 (2026-07-30T02:21:55Z), 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/ES18B1701995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02c20ef819c1db366969b88e56c7a5868eaa845cdc23df6fe4df4c4e9c1d8a0d. 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/ES18B1701998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fac9712d6aa6e0719c58bf9762ea5caadbfb86b1b64ec9bd3a9644f0116f8d9. Chain 2 (Bitcoin): anchored in block 960173 (2026-07-30T00:11:40Z), 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/USCGJ2089542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c56351cc020c53f48da2259965f576ebd54af4a174ff9bc87f77e7d0c44153b. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/ES18B1601778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe8ed0e14c66bd2aa006b5fc075bca03d89973483bb0c0f7156597beb03c41bd. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/ES18B1400433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a1c4d0aebd67f1114198acd2754eda07031ebf02be7390be0171de8bdbacd4c. 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/ES18B1400435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x930034ff897bcf2155defa9267418e246585857facaeb024bdbda14f220974f1. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/FR6V82160559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69312b1d9e8ddfb592a107966c9f96568707d54f4da72f43339f4f40ba38b42f. 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/DEKB71396912.
La Presión de Mejorar feat. Niña Tormenta
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00e5a4c015a1858129c1893d8673d0eebad3009b8922c03a1cc588c4df1fade9. 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/ES18B1806347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20b0e101584f982b75eca8ea1846ba5e1761469f590aad0a4e51ca46808302be. 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/GB7FY0900134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6529fb8a839b29b984c0a4c878542b121ac772cb3dce6ec169908556948ca62. 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/ES18B1601132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07d23269c833783d86f804c1276fc515d63f48278b0c4192384deb84ed153d4f. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/CLKT21801386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2e30fdd2f0ec5bf0c22a6d8d1100a754c1bf46c40ba7542148416fd87a0fd8c. 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/CLKT21801469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b41de4b1b25a73b19a8dd5424712b327fe08a73612a456ad2dbb261dea95593. 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/ES71G2016584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x067f97ff0cdb5b5533e75ec534642e7d33cacb2618278f9fad49229ee057bd8f. 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/ES71G2016581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26e21f37caa640cfad6e9fc8d9d75e246d591e17828f6665e18f2d84d5eda320. Chain 2 (Bitcoin): anchored in block 960199 (2026-07-30T02:30:29Z), 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/ES71G2016582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7690a24fdfa366f17cae266b351db340b00b4c0efd9e62fd7a1935027dd554fb. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/USHM92068186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa72a94b9fa3046602434e7c8203148ed5b6e64e586a47f3293fe5a0213d306e4. Chain 2 (Bitcoin): anchored in block 960383 (2026-07-31T09:50:37Z), 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/USHM92068190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf74524857f4e13cddce0c89fa7ba32c57d72cbecefe49724c4d4280237e1ba8. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/USCGH2158846.
Panal Records - Various Artists (Aniversary II)