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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf29ebfa6b015616edbad5d87d01b0ec642c03730c5b7e1516ec7a700462cba34. 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/86980eab-c6d4-4841-9e5d-743961f44854.json and https://artists.proofprofile.net/proofs/artist/86980eab-c6d4-4841-9e5d-743961f44854.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87f57228f126cbb4b20e4ae224301b00e62292202d1200f41c57fc1347dea91b. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/USSK31780001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03bd207abb9958c2f9e06438e5d6042cad34bea103d95775ad0b92c10d416bf6. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-15T21:23:21Z), 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/USSK31780002.
Find Your Way Home / A Golden Age, Pt. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e3208cf17595db06f6f63169c011db683cfba2e7d9b5b1e9c6af314b72445ac. 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/USSK31780003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad8118ff1ad5c9808ed4f13d3b45fb3ca809ed952f7135ccbaa9f2268b479d8a. Chain 2 (Bitcoin): anchored in block 956425 (2026-07-03T01:28:11Z), 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/USSK31780006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf0c52fd1e50d3920c7e70f471e525a2203fd62ac83d28911095b7459426260d. Chain 2 (Bitcoin): anchored in block 956425 (2026-07-03T01:28:11Z), 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/USSK31780007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8591861def229228592d7ae2ecb0673ee02b1503463b020a854ee839ec1dc3fb. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/USSK31780009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00a001ebc1bf3ffc027adc49e7813787acc6911f7d7a7efcd6edab640d06465f. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/USSK31780010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4f4a8779b5625beb27ee576e7f753aed2e7e60ca8e70f9f50348d82e61f0f53. 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/USSK31780012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf0790f2e18daad58c915968fad66291ea4436350d9247ec3d0ef581a835faaf. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/USSK31780013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabb294aafb7e6409e62d64b6199f3059195b4dc0c65248b94b703769aece0f8f. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T02:31:22Z), 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/USSK31780014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa27b715379394177eb10b94e9ebabfa3ace3d5ed4e6b667cc148240df6bb7805. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), 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/USSK31780017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf08b892712bf42b1fc1776fb73f36df0c97a96a22f57627910c8ef2100f1d5fd. Chain 2 (Bitcoin): anchored in block 956425 (2026-07-03T01:28:11Z), 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/USSK31780019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81b72cb60dd6b5b5fb1a9fd008b03e712d5fde0bdbd6378b8391c2d783fe8a16. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), 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/USSK31780020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bcee6cf5390956d55934b510c9a9bcd8843f351b692642ab3056e3418c79d36. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/USSK31780021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ae561ca9ed6e47542f61ad653c67f488334ee9a7bab379eee775774d6e584aa. Chain 2 (Bitcoin): anchored in block 958571 (2026-07-18T15:39:25Z), 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/USSK31780022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2949e61a69d8963ed83c4924a0b521c6c394e935fe5e99d5dddf3c1687726590. Chain 2 (Bitcoin): anchored in block 956425 (2026-07-03T01:28:11Z), 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/USSK31780024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd8544a428a7027c78cf754cc5d358c889a53236aeb62c9c5820414eb4c0aa9f. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/USSK31780026.