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 0xb694b90682d89d043836373dedafc6624ffbc0e1a1fb4a6e686941f921136c01. 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/dea89682-e074-4d5c-96d3-a9cf2290a79a.json and https://artists.proofprofile.net/proofs/artist/dea89682-e074-4d5c-96d3-a9cf2290a79a.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 0x63dd2eadbb3f12eb4dd08413a85928dc0f87d7b8fdbe2ae38b7a1f4d4ca927c6. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/DEBL61463256.
Learning to Fly - Kris Davis Groove Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4eca69d42ee1110d9ee39b3d9a4fc13e504d68fffa0b67cbee7c4dd3760d22e. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/FRX201635452.
BLANCAh Presents Authentic Steyoyoke #010
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e90a946073c9b5b4b93331438e5b3f66f710ac51e560d4ecffbf13bfd022715. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/DEY472177782.
Blancah Presents Authentic Steyoyoke #010
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24814c15d86d4ba0f2b8715603838194cd8111334fa248d6fe1687724b63f69b. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/US83Z2022234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x930841c3fc134e0e682654d03a76c6a801ce59286b70c2d152251309896b5ec1. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/UKFHN2000055.
After Rain (Øostil & Heîk Remix + Extended Mix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x787dc8d66590617f5baae344164d3464a482386b3872f4f1dc5facbd79923f22. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/US83Z2295319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84ce055f0563d88510eb0c5b92c7b3f999a3f62edb8ff9c0d04ee36d298d892a. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/US83Z2343400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac34c9c0cd59a25c63f98faecee70d4b480398eacd03ab3f939387d16fb0697a. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/US83Z2343401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x257380d28c8abd252f7d8fd285f0c5eb37ecc9740d3804932ba413e94ac83ce2. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/US83Z2343402.
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 0xd98846c518e04e932988e955cc0ccdfc838d75881958daf571ea6553d09fdb87. 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/DEUE12494700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35b8526e6836c30b8726a42bcef6ecc8ae556b3abc3e80eda25bdc31ccfa86bc. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T01:35:30Z), 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/US83Z2481151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe09c613f8f8e469e6e687db679350abb2e77811d260c7a6603c8f15b21c10721. 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/US83Z2503996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x723224f288e6b7534ecb63b8bbd8db122acd8c576b4700e775fa3bd66875ba26. 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/US83Z2515543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa95e5ff6c2d5d2c5becf5ed86d6c95a91a0c8f67371738df899e2d6689e052b6. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/US83Z2515544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ce47033e60523b5503f49097892cd58697a59acb986e1498a11f63f8b6d2cb8. Chain 2 (Bitcoin): anchored in block 958882 (2026-07-20T15:32:29Z), 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/US83Z2519653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d0aaf4da757f76645d4c13744f09a32d54b5ea088fdc93464aeb1c9029b7a74. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/DEUE12424287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x655c8a3f42810c418ab40f90629bcf46cf283c61d89ba00162c8786498458a91. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/DEU672002041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d951b5083606df45381d697c57ce86be9457169ecbb14ee5fc3eb0fb687487b. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/FR59R1635912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75a94c60daa4d1e77549fc7e1200d82626aea07d55984473e36d0875883c9302. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/DEXO42335993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32c8f0b61d99b4b15f34223ee668980a07619cd79fce0b194d1a8c3c3a66a433. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/DEY472374251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d94317f59ab5e77641d3cc99ffaa05adb4ce155e14657d92454c91f95c3038b. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/US83Z2341459.
SkyTop Residency for Proton 001 (DJ Mix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8013c8211eac13d8e947a678de5bc4d523ee806342792ae9faafce2c1bb48756. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/US83Z2140060.