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 0x8698c5bd56e049aea8f443892cde7bd37ff27730715905b326a9d88df184e5e1. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b8f6e86b-9fff-4e85-8906-f33eefe4859b.json and https://artists.proofprofile.net/proofs/artist/b8f6e86b-9fff-4e85-8906-f33eefe4859b.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 0xe81e6cd92ee4d91965f311e64f1477effed9312053290dad50e392d409a13fdc. Chain 2 (Bitcoin): anchored in block 957759 (2026-07-12T21:46:51Z), 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/QZNWY2019150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36f23c769e1d2b18e1c392e08e20248d23d958f1821066aac399f51549a8d913. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZNWY2019151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x489941627718177c6874beb128a1383af0b3a05b06f09c07bc0fc0ba93a10c49. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/QZNWY2019153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec76ef2fc07ed8ff31075ff5bc4d4c3dee9e999b50aafeee58872b9dc9afed98. Chain 2 (Bitcoin): anchored in block 956713 (2026-07-04T23:03:25Z), 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/QZNWY2019155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb135f8a9558bfc715356e410e772c0653643719c9cd76d111b8ef7a1a08d77c1. Chain 2 (Bitcoin): anchored in block 958506 (2026-07-18T06:14:51Z), 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/QZMER2121113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b799655054fdc92139d5e5b581e9124b75299636689273e3c4eb20408ef3e72. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T03:22:44Z), 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/QZFZ32233699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62755789ae6c1e0f95b56d6b77ff94307e3ad341aede7d631d23542c705d58b4. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/QZFZ32233702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2129cc5b388bec570d4a0a0244f8ba490934e54862b542dd5fbc3060e2bf39d0. 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/QZFZ32218707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd52d87f393f53f2cbf482eae576b327c9c5a5faaa00779f34e8fbc9aab7c32c0. 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/QZFZ32218708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x991a49e27130a1718ba6fbe9dbf7ab0c347ad7f021f3d6536b53aae1ae312405. 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/QZFZ32218711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0373af1c56936be29303a00384abd2fda88730f1091c826ea2748cd07c562264. 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/QZFZ62271840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa776f7cf0a315714a474e30b9be5b023a406871b37f7a514b3fae1e9854ed629. Chain 2 (Bitcoin): anchored in block 958617 (2026-07-18T22:07:13Z), 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/QZDA82265452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfea7eb3ac236dce3c45cbfaaaf165769c1ca5fd08702a0ea77acce33109b1807. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/QZTAW2331257.
La Cumbia del Pajarito (Quisiera y no quisiera)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24698605efa4a4a076dce10cf01309df0d51cc464d67247a915e3c36616fb3d9. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T09:47:58Z), 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/QZFZ32437030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03f94fe382787de322a1a115683aa202edb10993ef7611ebd5882913622b3112. Chain 2 (Bitcoin): anchored in block 959013 (2026-07-21T16:23:56Z), 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/QZZ7Q2412526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13c0fbc7866c23c8828f242405a49c2df409e382ebba658eb6cbade062f31435. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/QZZ7Q2412534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x851554761e8e253f38988e9e7553f6cb1e70ba5d102c6a852dcd797f901d9380. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZMEM2523709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x336be6eccc7fe4fec94f23cae47428c2137d51263e65c3cb53eb98aca826729d. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZMEP2556072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56999985ae3a2dc1b9ed7954c21e491096cddc9076a0864ae694275471bff706. 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/QZTBC2503607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbef35c75e311988e6fcfc6035df71d24536d9c8ea9f06504585397404200312d. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:43:20Z), 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/QT3EZ2571447.