In certain languages, the final form or terminal form is a special character used to represent a letter only when it occurs at the end of a word. Some languages that use final form characters are: Ar
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 0x119f6da603030fd8c6117a12948a404750f850ccf8747092adb6515b7bd3c708. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/522dde24-b2d5-427a-a741-516809b07c8d.json and https://artists.proofprofile.net/proofs/artist/522dde24-b2d5-427a-a741-516809b07c8d.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 0xd0d30426e2088213329e046962a858b7fb42997c7a52a8cd020089b8015de14a. 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/QZQAY2366884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x515c33ae168f5c19af377e919beeb5355f4a357bd280d30602b93b6c91bf51c5. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZQAY2363267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb74cd6b550f4b3f36c1e79d5c003b44c500da26b8da6a2fb4c5da4028e408371. 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/TCAIA2417741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab5bdfe80ec091105cac9217dd78ecea11092b80576bb9f1aab4377551ed412c. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/TCAHX2473010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x355136327b032068c78d860608ea961e7ab150b42e23a259ab4c37ba66001204. 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/TCAHS2370468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab5bdfe80ec091105cac9217dd78ecea11092b80576bb9f1aab4377551ed412c. 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/TCAHX2473010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x355136327b032068c78d860608ea961e7ab150b42e23a259ab4c37ba66001204. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:45:20Z), 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/TCAHS2370468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x678035871bf939f790b0a46536f3a1d661c323af1863b6602a40efad2741150e. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/TCAFY2176983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2499ca1db0baf1b53f756eef6659cf3405ca2f09d2f0378e1e29723db8fc363. 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/TCAFY2177088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5eb8d71da94b810847830dd72e0f325df89abb20f686451e02dde2f17ae0cb7. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/TCAFL2145553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd6f9f629fafefe43fe0359483433f73ec1073b12be2ad4be827e33da8ffe5b1. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/TCAFL2145557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x044bdd15defa67f95906b64630b91ed6315495e1663a1606e9a72b8717869b6b. 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/TCAFL2145573.