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 0xcce9fb020b8cf816478e7c60b68e701f9f21ff725ae3eb382f80f12b5d2dcb4a. 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/acfa879f-7409-4a5c-8b7d-dc5dde398de6.json and https://artists.proofprofile.net/proofs/artist/acfa879f-7409-4a5c-8b7d-dc5dde398de6.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 0xb2ecaad50691c30710a67308a306809cac19f3c84c1f974bec36fe91f88dfe7b. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/USDY41939588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ff04735c13b65c9f113abb9e1723f90064c4c5b9aa9f899b2af078f0ba98c4e. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/USDY41939592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x726f3e880c1fd2059951b1859e9079738ff47bbc7eda0b5a1114c8adf6b6b039. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/USHM91904611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0b2737fa52efd7b513e868a49617b6acc83f34bd0d56414e2efcc351c3a0d3a. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/ES71G2014607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22b793a1552f802531a15dd4a63ec72dc86caacd15b377113ea816cf9ce1888e. Chain 2 (Bitcoin): anchored in block 959069 (2026-07-22T01:27:45Z), 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/ES71G2057986.
Si de un Sí Dependiera (En Directo Desde el Estudio)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb550fd912f43339c45efd573ca0fdd23983db3aed458baec630ece25c915f1d9. 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/ES71G2134852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b54ad33342ac2560f19cc45df1f50c47285ba607834304ff9821aabba484af8. Chain 2 (Bitcoin): anchored in block 957539 (2026-07-11T08:09:42Z), 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/ES71G2146006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba4cb1df74c4adeb9822bc8b654282624326561ccf464b0664070a1a0e3953da. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:36:23Z), 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/ES71G2213921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b54ad33342ac2560f19cc45df1f50c47285ba607834304ff9821aabba484af8. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), 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/ES71G2146006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc06609ad9c08f2e31b5e8169f966c068de9f021cbff4188449bbce1f07253ce. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T15:07:00Z), 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/ES71G2124055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a0bc26d2f44ca826d9611903f5477194691331f7d595f58a56334fb67420257. 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/ES71G2213926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65324a15bd4d8c85984d39cd74b3fce58020428c31b55aa8b7d393e3c91919b6. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/ES71G2213929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51327ef787ca5ad71264e5802ec09025ddc297a9a1c1c84608dd624bd95aff9b. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/ES71G2417330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff8abd55b7194dd7835f903761409ca5881b3fd09a860531cacb9c8170f7bb19. 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/USL4Q1828365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce18181fb6c4818a300ada3b3e555a15f2125e8557afc4890f573a4178a9c651. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USL4Q1828359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc51c170da1a0c76b5acf980dd7ce078412e2f4cd5b687bd81d9db29b7b996e6. 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/QZHZ42046212.