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 0x91d4f9201597e4fa5f81a78b88071d5da785669cda2d87b6ac8fdb5fa4d7fe82. 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/c1f0a236-51e2-4a2e-948f-429e3fd2e48a.json and https://artists.proofprofile.net/proofs/artist/c1f0a236-51e2-4a2e-948f-429e3fd2e48a.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 0xa45760d0684f64bca85fce5e0f259f5301baaf03fac9abb1bd46e275dc445d35. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T18:54:07Z), 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/CH3132115954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27b9ed48a697cc29d21dddcef8ec97cdad80048cd33b5fd8da604e7cc94263e6. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/CH3132116152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc53e35c4aba6cfdaf00c5e9b8e29680d06476fa732fb03b5efb9a19132ae0f72. 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/CH3132116158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa734f870a884c73bb3fab48c74d231ee11766f52e9658d9d7fcb6123ddf5ea2d. 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/GBKQU2403438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38eb1edba8f7605bc4dc1a31ae7f11139103d9dfba3ee4d66dd7fbf7c94faecb. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T09:11:53Z), 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/GBKQU2499734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70f606734661cb1e13f830df303468a9fe2eecedb736a6f6fb35efa4ecc95dca. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBEWA2400893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc27c42175afec47517c4fe15a1b198ef123b4ddbb2b6f39973e24837b8de09d4. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T18:47:29Z), 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/GBEWA2400774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73b7caa9606d771f061063c665a495c4c311686f7e34cf5e88fa17aee5cc68de. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBKQU2418561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ee8d81c6be391db1181a40db8a79ee1e745f850445e8ebabcc2ada38f20dc7c. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBKQU2413753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf270da6e7b6bbb456c871f0169844ab696e86e5b0cb57f47de038c3c688e7567. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/GBKQU2154096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5e2f699ac611ff0600ed58a2396f088897d1a0787e834218fda723346fbf679. Chain 2 (Bitcoin): anchored in block 960222 (2026-07-30T07:48:45Z), 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/GBKQU2154101.
Colorscapes Volume Five - Mixed by PRAANA, Estiva & Klur
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59a0a87751dbdf1a932e7bea5bd42292e1a56baa61e1bf59801a07fff3983dad. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBKQU2379151.
Treading Dawn (Existence, Consciousness, Bliss) - Mixed
Colorscapes Volume Four - Mixed by PRAANA, Matt Fax and Estiva
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac2b18f163e3f7069211514bda3a986dcb2737da0bc3f5996760e3ecf98829e5. 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/GBKQU2282575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe01c20db542252097645d4051494fb549297318fdb2ae8728f0bac77df76f6ce. 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/GBKQU2282616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5b9a2d722c31c461a3e9f626a18ff141012ef47dc5ff83a8445b8c337d87f40. 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/GBKQU2485270.
Colorscapes Volume Six - Mixed by PRAANA, Estiva & Modera
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x641ff8cb18ef09c1799b17f75bb99e02e68179faae635930001c7547607cffa3. 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/GBKQU2476898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ce328307882b8af2d5fd7735cc338d82dc1952292cea99c98ea952630d3679e. 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/GBKQU2476900.