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 0x28b3712bd13c925770075d8993d332ebe20d1dc822bd8107d6b47fbc8acffb8e. Chain 2 (Bitcoin): anchored in block 954513 (2026-06-20T06:31:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9c3d6272-7415-44cf-90e2-e4ddf7a57bee.json and https://artists.proofprofile.net/proofs/artist/9c3d6272-7415-44cf-90e2-e4ddf7a57bee.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 0x0a949fd2b2aece811d1fe651abe446e9096a5460ced0e828bdd2c029142adce3. 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/FISRK1800061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bfa795b3a3041fd8a2b8cacef6ca085608e55a7159c6f20dcaad7b246c90b07. 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/FISRK1800062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84276af2bd0796f821bde09b436fadfae6c7d6d56c4b4a0edc34ad3d9b2daf3a. 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/FISRK1800063.
Tonttuarmeija (Tervepä teille, tervepä meille)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4637a319fa394c5064a04943bf41b53d27fb3fda4ba6c22b55184c069c041eac. 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/FISRK1800068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39c5496c8b76081ca6a08199263a02968047a92cdd99b160f898c28f07285ad3. 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/FISRK1800070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf6903d6c05bbf838b9c983be8a35c8ccb9a5d3310a95fb79875c5981deab84a. 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/FISRK1800075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcef34239d87a49c3512522bec5484199cbc0d641fd3e1359283f9d559ce45e5. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/FISRK1800056.
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
Lumihiutaleitten karkelo (Hiutaleet hentoiset ilmojen tiellä)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6b8c24d50b6128761bd394e7dbb154c0f9a8f712d775dc596240fbb2a2cba6b. 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/FISRK1800058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa75d17ce97017ea06aba060f3db8ed65b94a146004500dd00339e59d8eb9602. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/FISRK1800059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dffadb10461729de75f8366d20cd458970e71a4aebbf503b7f7da1d2eb6c816. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/FISRK1800060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x681b1aed1b0bf19583cd438c6bf97bafba6d0a2b982c85b3637aee9ebb7317fd. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/FISRK1800064.
Tontun puuhat (Tonttupa öin alla lattian)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1af7d78a71bd80a4c81c8cd0f6ffca8a7efe38416c77dd84bfeea022eaafbdd7. 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/FISRK1800065.
Tonttujen joulukiireet (Hiipiellen tonttuset)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x856dd8d40013765cabb036c8345875e544bf53168d27b418177faa67308dd6ae. 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/FISRK1800066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd67a4e0df1e07ad3f0ed10f67b00bdc42c4c3e2103b27c6a311778d50054d6c5. 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/FISRK1800067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf124946939c8f8fae34cbdfa5b59541b8062e94e05cd17582e4b6445e0d99028. Chain 2 (Bitcoin): anchored in block 960303 (2026-07-30T20:11:13Z), 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/FISRK1800069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18a3463fa117f4e199d3b9b49820217660a28fc62ea99e3c18830a5e60c00548. 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/FISRK1800071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x952077e21e33d0741496a02a9e7a4fbbdc415b9ba7834bf3077c170797d966b7. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/FISRK1800072.
Piparkakkuleikki (Nyt tullaan, nyt tullaan)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b870532add0a5a976a1dcbc9ed852ab67cf1b92922c5d5cf2d56a697f0492ee. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/FISRK1800073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc08da74ef78b9d5b509bfc494ef9546c6d8187336d8b017f17a086a30708bd5f. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/FISRK1800074.