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 0xa8446b59e3c0b280aee961f36d694dfe4cb716ab85863dd413f8c1c85b780846. 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/0d88cc45-e222-4e3b-a4c3-0f5e273a9da0.json and https://artists.proofprofile.net/proofs/artist/0d88cc45-e222-4e3b-a4c3-0f5e273a9da0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Satie: Gymnopédie No. 1 - Cagedbaby Rework
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 0x9bb1d4faeca75692292d663634777df58d98b2988e062e583d6f3509cda6c7a4. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/GBUM71701405.
Satie: Gymnopédie No. 2 - Anders Bruk Rework
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0ece37f6208c00ed4cb1f7e207bb87e341843fd9d987d359e98a38a8d2e023c. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/GBUM71701051.
Satie: Gymnopédies No.1 (Cagedbaby Rework)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1718299b141863ff20685abe712cf32515ce5c5f768dd0c836a429d192131b0. 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/ZZOPM2110327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5844b2d52b6fdaab4e913b14d7589e9dae9652fa93383fd3d2b5eb0f86ea3908. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/ZZOPM2110109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1718299b141863ff20685abe712cf32515ce5c5f768dd0c836a429d192131b0. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/ZZOPM2110327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1322dc42bfa7628a56aa87966ec3501c4f574735ce7d2e950e7988b23513dafe. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/GBARL1101222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59ef488daa07f8e60004d030c111f40057b5236ff8ddc5867e9d642fd81dc871. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/GBARL1200158.
We Are The People - We Are The Cagedbaby Mix / UK Edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24b297e762d6a0c355a170b36446d06ffa76f719fdafb1f5465e57c894ae7c06. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/AUEI10900100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf7f758cd9e4e28719f46bc74754619b06ca4aca7e572752a95e7b72f6a5cf12. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBLTF2400083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e5a714611588eead93ebc173f54b06554f5b2d5c861e96d1395ee9d575cc0f8. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBLTF2400084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40a4cd15c5dfb93a33abbe8a23f976a00b5bc6db0fffe8cbfa3cb671d64a9941. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/GBLTF2400085.
Global Underground: Afterhours 10 (Mixed)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7f2e77ad2916816ca23c15eae7c2d959643fee67e7588efa92cb767d80a84f8. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GBHFW2400125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08245485007eaeeeeb8f4219b226797eec11ec70162ef5c85c8d0e7dbc493c7c. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/IT00D0304602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ad068da3cbde6dc8559f99ff95c00b79a02c5629a2dc1b782f42f7c203352c1. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBEFR0801656.