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 0x349d37ec0618bcedce69fa9c34f71adc6b8463a3dc09f9a3d79b6e680df2a496. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0f017d26-46e1-4279-af92-2da2dd98a873.json and https://artists.proofprofile.net/proofs/artist/0f017d26-46e1-4279-af92-2da2dd98a873.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Sprinkle Junior (Original Game Soundtrack)
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 0xbf9ba1decd55e47c63489a96aca4bdda2970f6039cbebf766f3163b701d751a4. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T10:04:40Z), 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/SEYOK1915409.
Sprinkle Islands (Original Game Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43e744cca12c5f7f65ec3ae43575310b09457a1e9ec108772c510b6136d31a88. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/SEYOK1847108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cd68adb2a3c010a672b33c27b7d607a8a70e9d5c5d97bba668abd337439c135. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/SEYOK1847109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21fc27572301a392b7cec3c68d8bbc231c432f60468d80ccf4a0ccd271f6dc6b. Chain 2 (Bitcoin): anchored in block 957665 (2026-07-12T06:13:49Z), 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/SEYOK1847110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x709251c98d9b95dae998e4c7bafcf37b2b700b896dce79a31c576bef43da7173. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/SEYOK1847114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb80f700490063c8138c031722d962322108cdf422ef350cb7ea8e585d34018b. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/SEYOK1847115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6040898d53eb30ed5ec5e753359794b1ea4daa05dee08cc90fe7b63b65a9222f. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/SEYOK1847116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x244a55427e42fee7517031c0a62525886c884c886494a89b517fd266692c4874. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/SEYOK1847122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b5a099b42ff6875256c155642efe8d0e59e5c26e75748e33218d6b6fbfacb60. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/SEYOK1510950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97f3073c911e6557a3c235f0ecf655c048d28b48e05b72d31e6bef9c3a356b45. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/SEYOK1510954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a0704b3656557a9d4f977e4b6fba316a59a169d32382baceb610980aa5c1d68. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/SEYOK1656337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f2f26856577065c550f705073e47ffcd8537302a51d53ffdbc8cb5d734328ff. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T01:08:10Z), 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/SEYOK1656341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7866f80733e871e92b6c61a1beab3cbc8aaca9a44fa62cb2fb9e648b6555c3cb. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/SEYOK1656343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72659bc427733ec56b40bcf07ab1a7587279c287a84e33ee7396a1d9b402b0c0. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/SEYOK1656344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1097196106c2a2a627098cb3c58c16c7d342dd07a11c4a36ea8f326e8af31f7. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/SEYOK1656345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09cbe74d34cf4e78a098322f7d38e26f66acb9969c182502babef5d3aa16a171. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/SEYOK1656346.
Knife Sisters (Original Game Soundtrack)
The Blood Of An Innocent (From "Knife Sisters")
Teardown, Pt. 1 (Original Game Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e15f13986895148d9838f43499aff6d3b57d1a58f8961e5be95307a2c9def05. Chain 2 (Bitcoin): anchored in block 957671 (2026-07-12T07:35:31Z), 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/SEYOK2054831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa12f3ca89a5dcf658e3f4f5a6f47ec0e72ce6b584ba9966fd379c8fe22a0b2a. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T19:26:13Z), 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/SEYOK2054833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40dd399c96c9993ec9dbaa353bb0a148d116e928cf6109e92c505f0964d82cd0. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/SEYOK2054834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d21551374e15861f2c46077ff35d305f8e5954feaf0f3e13cd1c077824bd716. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/SEYOK2054843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a78015ed617713f0cd438a56ff96b42afdf159ada8167a4e4a1fadf0649830d. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/SEYOK2054844.
Teardown, Pt. 2 (Original Game Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x160cee68bf529515b0d76cb3f988b5c1d7b65f30e295217f71578e11904b73b8. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/SEYOK2164963.
Teardown, Time Campers (Original Game Soundtrack)
Teardown, Art Vandals (And More) [Original Game Soundtrack]
Teardown, Folkrace (Original Game Soundtrack)
SteamWorld Heist II (Original Game Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61b3a2f152241e3f79907938ed836211f424b8d64b038140a41a18aa6573d802. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/SE5XG2451193.
Overlook Trail (Original Game Soundtrack)
Teardown, The Greenwash Gambit (Original Game Soundtrack)
Truer Than You (Original Game Soundtrack)
Spin Rhythm XD, Vol. 1 (Original Game Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9a57b6c09d004c2f06b02cbf2f28f6d2c7732c7a1824b91f3f4daa227f30b80. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/QZGWW2045933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c63f666971460b3aa664568e98b0c33b7c8e3f46c62df82e9836a46e6c17969. 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/GB8UU1700043.