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 0xc2bd6b52c2fc8fbf2a7f859d4063289b0383a0e199c0a9df98b3a6b8578857a3. Chain 2 (Bitcoin): anchored in block 953864 (2026-06-16T00:30:31Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0565c097-8b49-4206-8274-aadbeee31521.json and https://artists.proofprofile.net/proofs/artist/0565c097-8b49-4206-8274-aadbeee31521.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 0x127eb2ccf6ef859fa6f8f994246ee4d920de6b8e60c888971ad1c0cd45bc9c51. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/CAWHO2025601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea01720f35582df15a58cd1ca511c039e0ce4af6f122918a65726ffd3dd65a4d. 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/CAWHO2025318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f23cd4998742f055301fad28f8aa42d0476236b70467216b752c5ecaf2be94b. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/CAWHO2025317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2850574127a5bd514fdafe40adb55e03f3bb64a4c867268827264fe30424a2b9. 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/CAWHO2025320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x194d1f2cc0a6dd8a5793dca1dfb8bd484f3436143b528c10b04933550116a029. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/CAWHO2025319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x078c0a087d4390df15fc960c3842455f607aecb32547632085090fd4b55b0d45. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/CAWHO2021883.
Future Progressive House Anthems, Vol. 11
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25c342fe67cc51612b96e5ccb431c2315f887ece7db93a030f11c200afb3524a. 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/GXFHP2430165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f9117b35a156971d5b8f582e27ad95e5be322626af177d34ff020011ef4438a. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/QZNW72336305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fc9aad8bed20fe41b0dcc031fc7c037c7b0cb928ddf829e6d9005a76296567a. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/USA2P2026565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x894726d2ae2197f37cc09cb672dccc8ae7db5d55963db132d844d3ab475fce11. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/QM6DC1971566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x012080b3267c2efddef34eb3dc9883f2479ffc1f331e5280513cf029b3344618. Chain 2 (Bitcoin): anchored in block 960383 (2026-07-31T09:50:37Z), 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/QM42K2080814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0326c309360fec5a47262059603a4924d255865dbb00346b22fcbe1e01c4bb1. 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/CAWHO2012863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1702ab21dac47f231a0f3d93b7a9f93e0401555ccc2d953c51de9f34f3d64ada. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/CAWHO2012864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f551a9a021689d719273dc0610c8fc57b0d0b310bff23bf2c3f6d73ae4f1bf3. 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/CAWHO2012865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d9975e804ade9ef99b186603ddcc9f5cdf1f3da31fa7a92d93ebd4070d65fea. 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/CAWHO2012868.