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 0xbdc5d62fc9d28ea816d978ac844d54338927c155bcac600987d72412996de793. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/de1c11ae-26c8-487e-8304-e74e497f41e1.json and https://artists.proofprofile.net/proofs/artist/de1c11ae-26c8-487e-8304-e74e497f41e1.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 0x175dba0c7606595d658d592cd3116c6025994c92cfe8635f6f7e7755143f2196. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:55:34Z), 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/SEBJA0312090.
Menuet ur Partita för violin i E-dur BWV 1006 - Svit I
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ea48c8041c7a0926415f4fcea8e4af76a9e30ae72ec6512d0490bee55d3f3a7. 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/SEBJA0606010.
Allegro assai (sats III) ur Violinkonsert i E-dur BWV 1042: Allegro assai (sats III) ur Violinkonsert i E-dur BWV 1042 - Svit I
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd4504bb2a35efb16ea9fefb271fd59a7e499af4faf9b7b75ad83b4cd967de0d. 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/SEBJA0606040.
Bourrée ur Partita för violin i E-dur BWV 1006 - Svit II
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48987279f60a455295acba139d4935076db847a662e2432fb45ef2d92b98e043. 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/SEBJA0606080.
Wachet auf rurt uns die Stimme ur Kantat BWV 645: Wachet auf rurt uns die Stimme ur Kantat BWV 645 - Svit III
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb29e1abd50bd5ed8f07fbe937421d7c7efc98e7020d0ecb460384a6f47495d7. 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/SEBJA0606090.
Vals efter Vilhelm Hedlund: Vals efter Vilhelm Hedlund - Svit IV
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1cf79afe3b779bd5b86b23c09df53ba57f7bacb70d52a04404d82a55cee2309. 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/SEBJA0606130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7543faf1fad1ab68ccec5f9630c2114a829b60cc49225f48d46229be0b6efff8. 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/SEYNI0901603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2be3adfe4f5c27d3f9e91a97b73f3bb2508fa7d7314843ddf7afd36d86c5162. 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/SEYNI0901615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c3ebc6f129d9e205cb5a6e6933f9922b740b2f774ab5f4e31b22a35e564fdd2. 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/SEYNI0901601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa613d65a9d4d92501dff6ce58d6bf7fbb3c74b2a30309f68eba4cef3e98bcf1. 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/SEYNI0901604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedba2c93242be3e3bb38a31f83b094ddcd2aa5f5e50c2148111278a7c18a8424. 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/SEYNI0901614.
Jul i Folkton - I solvändets tid (Live 2010)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x650a12dd50d9378c6838bd29d5ff99a00163a482abdc653a45357c1c44a2dd26. 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/SEYNI1100402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa29ea393019667c42816bf9feb5087c836802e614e2fd3325c04d47ca9d51354. 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/SEYNI1100405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d150e1098aa06eb7088beffce1628c322cb22e3efd365936724f1cb3b6e91cf. 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/SEYNI0901606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39af2dfabbf9670d25b52f62747d27519bea7acf4511e4872391d6436bea5050. 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/SEYNI0901609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b5e0fd428d83f03bb5fb624b9125b490bfd13d4b7a08dfd07187a7e2d28e6ed. 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/SEYNI0901611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28d3c289552f1f4443aaf45ce5ff26e33bf5d9c835a184757ca7ebb366c9cf9c. Chain 2 (Bitcoin): anchored in block 960276 (2026-07-30T16:01:17Z), 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/SEYNI1100408.
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
Joseph & the Angel / 8:Th of Jan / A Punch in the Dark
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76c4e6a13d30cd8076808828e179ab9f84f16af6d3f80143e549b5f9d8f9cd3c. 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/SEYNI0901608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8ba73fb2bc3cae90e5c788f25c082bd5eb49921ff8bb5965e570a3c9bbeddce. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/SEYNI0901612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3232835d7882830c132ebf58c27e7e31d0b2260dfdd9ba449554d94b8f89af0f. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/SEYNI0901617.