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 0x66f80a22569e6fcde3a959200912c57c357db97026d9adac601b18f4b515fe71. 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/cc1f7947-c724-430e-b817-5009143a7f69.json and https://artists.proofprofile.net/proofs/artist/cc1f7947-c724-430e-b817-5009143a7f69.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 0x4b1896b9812d299fb6cc06f4ba87a66ed98f97ab7b1cab05bd24c94de4bf0236. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:31:06Z), 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/QM4TW2003805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa87a7527d110a529610c98508b5a5472c086654ebeb3a87c8d5531739ad56f23. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/INN242104657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9c2190fb7b28ebc027a19b8edc19ac2acd44882548c3b73d97d40a131f3cecb. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T23:03:44Z), 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/INN242104658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1862ff87f22f0e02d2f29e87af311e4b9fe7f601679bcccadb0b7a32cfb83fe3. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:33:01Z), 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/INN242104659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf43a2be34212af856ab2949ab6e26b16c3684c73b033112155ea1714dcea6834. 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/INN242104660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58adcaa412951502b1ab98372e47223b3b69ba20853de5d5ca4a69907d214b38. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/FRX762159372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19b49ee676708b059dc3c25bb54c0d0240a57a4e104e30bfc84cce4620ef2a04. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/INL452100025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e9ac4138698db34ed444db9a3ca89fc0c3e3d0355d0e34db21fe6e935c9c15c. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/INL452100029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4510e618ee1109b71439f833fc168b1825a24671564cd064d60d29d2a8b3fdca. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/INL452100031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfca7e39ef34571a1da18ff68dfb0dceb59448ec33eeaf6770dbe320296c787be. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T01:55:25Z), 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/INL452100046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb56ba04b78b91657b5576d29f6b6a19560507808f50407479d38cf673b2df067. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:32:47Z), 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/INL452100098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa019e80c84c6aee9439e20bf15e21d048be83b2c5cf47ecd2419139bf56a791. 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/INL452100099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8642114f0be95abea2a1c945f96c63fb0b71554b3962b102b30492f671387b53. 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/INL452100087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49f014ebbee771b98bf5b44c3b955115aa63b021a843b984497c1f8681d4c588. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:27:33Z), 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/INL452100088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd79aa1155b8fb18aa52e8c42bdba513c5cc11cdd160137be50f2b498adb588e0. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/INL452100090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x679b6d33ce3b31d2a074799ffedead709615f114c934716b6cabee7a32090762. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T15:54:01Z), 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/INL452100092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c478844bc08db320ee93a79338ae815b403694fed391a7d0b71938207c34582. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/INL452100093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd31060e6e52ddd4ace174cd3da135a013d5748bebaccd46170565449214aa12f. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/INL452100128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd23ddec47f1ac63192eef2ac00b734ab8d8d90777f225f4fbcc0b7fc959a0299. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/INL452100110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a8f84ca704dab9ddce35663b574caa5ed80d93395127cb65ec5faba4913f3ab. Chain 2 (Bitcoin): anchored in block 958496 (2026-07-18T04:43:53Z), 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/INL452100113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7407830cb9da162c7c4b81fa76d21c9b811d7daa893ab5c6653ca7cd8f52bed. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T23:00:03Z), 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/INL452100102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95bde654b81b19eb17d42fda118b08141da8569236119ad502e1abde01b28098. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/INL452100103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fbd3d703ba37a195858266e08f3fe9628691caa7d198abb79dba14ad367074e. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T14:09:42Z), 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/INL452100106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0197c4de8033b954118cd1c44c3e41b11aa3d723ec2d3c015174769de0d251b. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:57:55Z), 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/INL452100107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x657cf5bb1ed07afdcc18a250218575993d47fe12bd85fea607bd20fd21f9444d. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/INL452100108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0c83198271f0961613cb37f05fd996288aecfb74885570412bad5756ecc656f. Chain 2 (Bitcoin): anchored in block 959003 (2026-07-21T14:46:15Z), 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/INN242315473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec1c84b2fbf5e12c53e0aa96199d1a7b7a8b584888b67b80b78994d378f8e7c9. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/INL452100153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14b33f1c11080d6e8f75be70b148f888c6fd39e08cf774c2ca750134c5bef2bc. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/INL452100154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ffe2ac7ee4b665a3593f69c17a30640fbace083d0562b8350ef51aabbd48764. 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/GBLLT2500662.