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 0x5a611d0842fbe19f68fd7c1e0e0532a841fe658c765cc9428761e644556ab948. Chain 2 (Bitcoin): anchored in block 953783 (2026-06-15T12:24:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d6765c2f-5400-4a6c-adf1-798870164adf.json and https://artists.proofprofile.net/proofs/artist/d6765c2f-5400-4a6c-adf1-798870164adf.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 0x84d7d3be8fe713aeaa0e1cc00e041410eaf009f033a31ed414828c52158bbca6. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-20T00:17:59Z), 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/GRFM12100370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb649958c9d1d532a754e97f18af11f307663aca399e0dda54efdc2512880234e. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:09:16Z), 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/GRFM12500150.
Theia I Arhi Ton Onomaton - Instrumental
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x740df452427f6403c67546f6db409ff7a8691c920ec7d3a460df8690f2a7f995. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/GRFM12500155.
Glossa: To Fili Tis Manas - Instrumental
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15f4a0dfbaf523807787877bbb24d581828359af3fcbd42d2c7c0fe2803ce52a. 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/GRFM12500156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7870d5ec37a01949005e02b66e01694c5e22e799032b5025b3f2dfd8ddfe6e37. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:28:55Z), 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/GRFM12500157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb11c088224b7fbd945b35069d48451699931e9a1faee1fa4570e28906c128257. 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/GRFM12500152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d561accafff40607438a55641e8e22b7af1cebd1a8f39e1472e4c3dca067c45. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/GRFM12500153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda86f6bbc5b82ca3c8d0acdb1ee68e0aea860f2a42183dd9aa9055178d7dbcf2. Chain 2 (Bitcoin): anchored in block 957892 (2026-07-13T18:21:16Z), 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/GRFM12500158.
Aftapati: O Ypoulos Echthros - Instrumental
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34680634283a4b33260379c56aa3d541e144b16555aced2b54c0eac9755838c6. 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/GRFM12500159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0f4d913ba84be995aac8e405b7484b5faee1f7a91b5b70f662647a88d51c1ee. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T17:52:57Z), 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/GRFM12500154.