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 0x372c831a519edc03d2889082a5a96ef541c36e7806ce0da793d599696ca0ea23. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/492f1c3f-332b-4f59-a460-0394407649f1.json and https://artists.proofprofile.net/proofs/artist/492f1c3f-332b-4f59-a460-0394407649f1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Rime of the Frost Maiden (Soundscapes-Vol. 1)
Terror on the Tundra (Long) - Roll20 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 0x8150b093a6db30f4d7b101c265612914c7335707a070c3e814213bcecbeded9a. 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/QZK6M2150928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02dc500ad033dcfbb65f6ffbadfc5e4f61689bcafbef0683c9decfd49752078d. 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/QZK6M2150936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8112f0c78e683b7ebc0be3f6d085090a0dfe780e37e4beb669a3bc4acd58868. 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/QZK6M2150940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd05d10c1c3b08f90e6d49f362b8f3e84e621c0f703f16ac577f5de40ae515fe5. 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/QZK6M2150942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf85c37cb15c9ae4745db2b4b18b97b1be0b957fcfc9332c1b8c510aaeb2162a9. 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/QZK6M2150943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dbe5d015dbd0075144ef0e88b1ae37d099bc28141ae9fced351439c38e9f0e7. 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/QZK6M2150944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4209213d5ed07ffab4187668a724ff112408a746e4da45b8525aac5c4a192728. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QZK6M2150926.
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 0xc40f29a2f405259015c0e73b230562326f9ab95a62e959876fb1abff7589558b. Chain 2 (Bitcoin): anchored in block 960198 (2026-07-30T02:21:55Z), 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/QZK6M2150927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cc8c01ca0055bc30e4999d6cdefbb8f35fee7c25d512f3e653b8d91257cd162. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/QZK6M2150930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fdd20c26004b8eeaf2c824a1e1347ff43539b96bb7a1228bdf0172fa641820d. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/QZK6M2150931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d07c67cff02aa73cf3b5e2becdd33359730604d7915bb5bfbe2d148c1683d75. 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/QZK6M2150932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccccb73c9462c34e44211ed711e27929fd143cdf49fb41ebbf9e1cbad3a7db77. 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/QZK6M2150933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce00baab47d0ce6fc5511d64f834ddf4e0974f6cfc10df3bc3bcb958e4ee7627. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/QZK6M2150941.
Aboard the Nautilod (Baldur's Gate 3: Original Dungeon Synth)
Toccata in Red (Curse of Strahd: Original Soundscape)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3535f9fd536451a1a7a79d7baede2af6bd4404e857900b33171c12ae54661ebe. 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/QZMER2104145.
Rime of the Frost Maiden: Main Theme (Original Soundtrack)