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 0xa788b1b243702c6461ebf5f8237d9fdc64510c99a8c1a69f568e2a1568490695. Chain 2 (Bitcoin): anchored in block 954631 (2026-06-21T02:46:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d02cf165-1b8f-4a94-9d99-57e2850f2087.json and https://artists.proofprofile.net/proofs/artist/d02cf165-1b8f-4a94-9d99-57e2850f2087.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 0x962e736018d752cc62922a7df03de0092c1dd8df0e4a04e1952b0ada46f13a22. 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/QZS632357201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc53ad35e75a80df19e72db3bf337adacdf3bb1372556e9612c729a361f10ac05. 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/QZMHM2265282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1707e01f518c8a2582cba221630543767965ab8d6515b19df51d40a9a2105504. 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/QZMHK2366148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ca4a8aefe7932ddf4a4d53d1c6a9957b9381acfa1a14bd6eb9d9c17e599f66a. 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/QZMHP2394020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc6ce91c74142c1e954a78511b0059229b4eca8836c627aa6dd4419f445f6727. 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/QZS652365384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4c3cdbd76746329a4bc0d360857542871233dceb7ad8e27e55aa33a477e122d. Chain 2 (Bitcoin): anchored in block 960503 (2026-08-01T03:41:24Z), 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/QZMHM2368038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2596c939d32b41505ad5eabd42cb88187552d85ce8221f762a67044530ba4180. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QM42K2325205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ae4f77ac89b4c27e65d0e363b845614f76870c82c81880b248324c3faa703d6. 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/QZMHP2340006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49e2663c638497c9ddee0a55ed257d8cc0c4c12101a12c7c51aecd7f5c9693f7. 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/QZS642357799.
Almeri Seeket and the City of a Million Isles
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ed094f35f8ca0cd4d6fb633e4ba7ad2c679bd6f24fc55118344fdeadb2f6429. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/QZMHN2364841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb803812df9935364531d2bf55a59627da2d4711f02c4be3c86f2735cd7e9036c. 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/GB7YL2100179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f3c59fe74a021c01dffdf55bcfe8228bb3325840c2bee6e648c89325a198193. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/GB7YL2100180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52e5f59c3103f88966e921cce40a751f51bf6cafbd39e70be6897701abab5a86. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/GB7YL2100181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5779615192f2f0c20719362a1673401675c63ba0a635864ee2525e8c069364b9. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/GB7YL2100182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86a6e7cddf77c39f9cc4e0b0e48b924a262decdb0d068365c9221d0b2ecc0e6f. 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/GB7YL2100183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73d4a504cf207c3141e162c8e3a524e924d20b928582fc72e6cd5e2ee6263bde. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/GB7YL2100184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a779916cb1a6c251e87a46ba987fa894294a2d8c85a597dcf31765ae54ffcb4. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/GB7YL2100185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e876647503831d8c440a0ab7f9042d77334187439573a467df3056b5a3cf606. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/GB7YL2100186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc43d5293b63d69462ea8370bef9e572760050a39c6fe880d3a7bd8f598fcac0b. 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/GB7YL2100187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a11c916142b40fa17681b8bea79b8899ea8f843dbc1e49bc466824252c95634. 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/GB7YL2100188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0232b266b79132ff3fefd249d0ae08c4b8a76ec30759abaad1ac5919ad50892f. Chain 2 (Bitcoin): anchored in block 960404 (2026-07-31T13:06:57Z), 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/GB7YL2100189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc53ad35e75a80df19e72db3bf337adacdf3bb1372556e9612c729a361f10ac05. 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/QZMHM2265282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1166209b172d5a2bf0d795f170d05918ecf34c70c53084c900e5aa1acd708528. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/QZMHM2239776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd955fde5c5ebd65e896c272fa488344e55bd96c9bc222c9479ff83aed318a575. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/QZS662186273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1342de59499ce6f107b03f9fc078e138a9134af09f5c0b117cc3e20acfc99b7c. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/QZS662195689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9cade688603f672e3647a491bc93579afdff476cfe4685b6e67c623854ecbaa. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/QZS632370316.