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 0xfd578b130506b91cc4a090e7c187e28d89ce6f7c73704d02fd54aef34fc7d9c7. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/55a770c6-b047-4bf1-affc-bdea84ef2a50.json and https://artists.proofprofile.net/proofs/artist/55a770c6-b047-4bf1-affc-bdea84ef2a50.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Battlefield: Bad Company (Original Soundtrack)
Prelude To A Lost Cause - Orchestral Version
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 0x86fb2288bcbcce66a3f29e3ed429f0fa36cde37b7c564be712aa6198d6503f55. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/CAN110800411.
Prelude To A Lost Cause - Chamber Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98d38ed2eb21e87a17664ec55865745ddc358b991d8980f439a0641166e8e34a. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/CAN110800412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x581ada08bf9ce23b2d643246b65e4a4bc34d08e34c868d0227c77931abc27af5. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/CAN110800410.
Battlefield: Bad Company 2 (Original Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb0b6790dd23eb7ef83630972dfa24de10dc2553c5216d45d29b22e704b958df. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/CAN110900908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaf10bda15219deb10dc5de10c2e7ffcb519d2b20ca70535530be48c4c691821. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/CAN110900909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c386e3412cd36dcbd24c4c7ac0a003bbaecb8129bee8b94991f72e31d94c416. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/CAN110900916.
Tyll - An Alexander Ekman Ballet for the Royal Swedish Ballet
Midsummer Night's Dream (feat. Anna Von Hausswolff)
How Many More of These? (feat. the Dahlkvist Quartet, Henrik Måwe & Anna Von Hausswolff)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4203e1c03e5cd49510169969d10b1ef2f178352f9914c9af5484d8fb0fbfd2a. 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/TCACR1669880.
They Hoped for a Name (feat. Niklas Brommare, Roger Bergström, Maria Grönlund & Anna Von Hausswolff)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x074f4a332f12b1b190d25d6a750cdaa236e936303bb268796e8a845bb94b09c3. 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/TCACR1669887.
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
A Swan Lake (feat. Norwegian National Opera Orchestra & Per Kristian Skalstad)
Overture (feat. Norwegian National Opera Orchestra & Per Kristian Skalstad)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbefd22976b504bacb5c740b3a5c34e6f29a9dd8478207c9ca0df6b90c3fbf80f. 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/TCACS1617537.
Flocking (feat. Norwegian National Opera Orchestra & Per Kristian Skalstad)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x967100f1eded5440f3cd5cbd514bc2f83a131d763bd3e33df073d4012df8f8b5. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/TCACS1617564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c2f0f01689d222cd98be87b23cd2cf26b2deaa81fa9200cbf79e59d48b5ca54. 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/TCADQ1880394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6d1feb509e1a050e5dfda77c1a6b02df746bf306a82ef7570f45d183b08fc2f. 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/TCADQ1880388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x225f1a9778f41579043e79af8a1a3771bd5966073447128c6075101ae795b635. 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/TCADQ1880399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b3e127a2ea1b1683a4231d5f38105532e1a5368c749061a4a972cbd27088253. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/TCADQ1880405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02cb0e90ad6b8d959d03707ffdf388bb1eb7513cdc7a5553442b614e8c267e77. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/TCADQ1880431.
The Echo Drift (Live at the Prototype Festival)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8a7fb1267903fd9a71d788898869c2f22f2dd446eb83f6b1919ee291801292d. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/TCADW1818165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a75433b85ae9204e9c50da12f45150a3fec133179a6631803278a830154bf4e. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/TCAJH2503324.