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 0xee29bf5b3eacbf874596f2f621fafded49b6908ef9e4040ac66671fa34ce6fa8. 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/cbda5cdf-6051-4077-91b3-ebf312b27a73.json and https://artists.proofprofile.net/proofs/artist/cbda5cdf-6051-4077-91b3-ebf312b27a73.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 0x44def452cae7fafe82ce979e5a5bfa22d427346fd349610c48d05d36b22afee6. 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/DEUM70805681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41bca29aabf9a01eafab27d9bd231951c16f24d678d4e3876714f173f1b48019. Chain 2 (Bitcoin): anchored in block 958627 (2026-07-18T23:33:54Z), 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/DEA621300508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0fb19ddedc8e319b387fd0f903de5d4366bda229064fc3a8698a32ed0845f42. 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/DEA621400485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08eb047d15251ad22e169f7857e73808eb065768f757de7a918267bfff9449a4. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/DEA621400487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa88d8481575ebe9307231cf723a31934554e9b456955d3b3fbfcc9997ccba91b. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/DEA621300458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ff7df0f8346bd06aa71382d5bf7bcbd99a9ef902954b1304906add9a4efd7bc. 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/DEA621300457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd824d704294228003ff76ef41e53a7a2d786573a9420c88cf477fd3e1873808. Chain 2 (Bitcoin): anchored in block 958116 (2026-07-15T10:03:06Z), 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/DEA621400489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e77759257c301714c86ea396dedb33133eec149056cdb7a60a5bcbb474cbe68. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:25:04Z), 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/DEA621400492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64c0689c7f40e03de161e627ba1d9284736ab3e86b3afb9fcceb85ef08fc9bf7. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T23:02:01Z), 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/DEA621400495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x935e6a18c487e149392ef9c1fe7af43c4d14776fd60635db026532c29683fce5. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:23:50Z), 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/DEA621400490.
Es geht mir gut! (Sehr, sehr gut. Sehr gut!)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x415abc48fee81d234490201e2b6487ea545169e668c1606cfbb87f3dc411a9be. Chain 2 (Bitcoin): anchored in block 958733 (2026-07-19T12:51:21Z), 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/DEA621702304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x187a0f68f4b8279b20dc3b582391c01d0521a4f0f5b8d12e153452b46f5248f6. 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/DEA621702307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11927f00053fb0a212a1c4c1299eba0f2f2a368e250a574aaa9028e31c145597. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-20T12:08:31Z), 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/DEA621702309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e7799e65d92225ae56434c72a34c76bc3892b7e400145d56a32b0b6e8d0f2d2. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/DEA621702310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf0f8b6abcfed7e9fff5ccbb99f22eb949c347397c4554e71c99062c64bc1d8c. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/DEA621702311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2c4c42a60915694159d7dcd711de382338d30c0b0894f73e2712f74cd20dcd6. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T05:02:07Z), 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/DEA621702313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x141bef902dc41238bcf53f66c5a98e1f6a943bd8766c47f7ea961370848893d6. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:43:10Z), 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/DEA621702314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba905865fdd5180979ec6265af52a3227e108ebe400aba8cac929fd29886c8ce. 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/DEA621702316.