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 0x8f22c9b8276a7966aea86b73941a55e7b9536e65b9c8c68fc787319bb409448f. Chain 2 (Bitcoin): anchored in block 954058 (2026-06-17T06:34:31Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4525c32c-b364-42c3-8f29-7a148ee69fca.json and https://artists.proofprofile.net/proofs/artist/4525c32c-b364-42c3-8f29-7a148ee69fca.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 0x62e8c0a5b970a14d802eee3a7f497a1c7850ff48bda0457d46b3e0b4e032d80d. 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/US83Z2241176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x297e965b8363cd384ad7a580499b78d29b7aecf6f1b42820ac5b816d6ffd4451. 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/US83Z2344387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafac4a40f2bb3cf4f2c3178f43b1bb3a49ef4b888e3e61037e0f0391afeff7f1. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/US83Z2406471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d0954efee43badf3b45ec1225e2f12026c1f691a368bc0bccf4b8663458bac3. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/US83Z2406472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf61d54e4a57e0d0407c77cc499800da6cc5ec5a0268bf1d08b3baf319d5f0f96. 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/US83Z2406475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb39f4b3c62d53a9a299f49ed0eda46ebc770314a8b57ca7370afcaea344162d5. 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/US83Z2406473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92cce68aa0b27004aa373718c8db463d19279bcd3109fcc1455f455ca6aeb766. 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/US83Z2406474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7592acd2f0036c7532561b695aca46826e65d1514bb4556e1d7b60ec6df90e32. 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/US83Z2406476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98be96b2860dd4c2f84976c70cfd86ca7c5dec1d21b0eb4c513c05e809db09aa. 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/US83Z2406477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bef3b760ab438b7cf6274b0cb52077ee06ebbdbbb5a4e76b5c87178d5ec728e. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/US83Z2406480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d0954efee43badf3b45ec1225e2f12026c1f691a368bc0bccf4b8663458bac3. 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/US83Z2406472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1499e9ccd4ff92cbb9427fbf488a255a1e3616eb0f5bd02b9525ff3fb91502ca. Chain 2 (Bitcoin): anchored in block 960485 (2026-08-01T00:10:46Z), 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/US83Z2344386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x297e965b8363cd384ad7a580499b78d29b7aecf6f1b42820ac5b816d6ffd4451. Chain 2 (Bitcoin): anchored in block 960163 (2026-07-29T23:20:38Z), 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/US83Z2344387.
Embers Of Time - Nicolas Benedetti Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b5aa27fc1ef10678cbb6563904f9b9d3a81e8ec6505f070dbe7afd687110ff5. 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/GBKQU2362489.
Nothing But... Organic House Essentials, Vol. 04