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 0xfc6315f12312fbef0e8d95788c92bde3574e3ab7fb8a202ddfd6f606c6501641. 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/d775adb2-e5e6-47aa-8a03-37d71e790be4.json and https://artists.proofprofile.net/proofs/artist/d775adb2-e5e6-47aa-8a03-37d71e790be4.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 0x41dce8ed5a88519752fc4c64e4a1d1184e02cc1309ee1ae48173df0877a18203. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/USMAC0300026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec48803d643215db90501817169889748bdb41d575e5575030ebfbc94d61f505. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:20:29Z), 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/USMAC0300029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc5827a039ff8587a152e444ffd18403729a14abe870fdd248907b884bfb8a33. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), 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/USMAC0300033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x346d16f143778319a806e2cd91c42eb9fb5a46b5c5f9783f3beec833538d96f4. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-17T00:58:23Z), 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/USMAC0300035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7ff3a95fb6827f79950ea4497bf1ba7a5f9e6730dbe14283cce484cf8f34c3b. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/USMAC0300036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe418d66477a9144cfd85f619a2d4b0ccb1852c3d6c92421a9054672adeeadcd4. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/USMAC0300037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63a1b57956d12bcb9dd0b2a95918c5343bc5057bd62f2a1496f5ea3b395f0dfb. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), 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/USMAC0300108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0c1dbda127dac6099e964d5e6066c790be047abe7c059ea02449f74713c771c. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/USMAC0300113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe87243b249f717c2e70a0cf4a70df4687cbc42830059671dfd884624a8ab90d1. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/USMAC0300115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70c5f27eeb43493ac9d0abb502e4828fe7bfe9cdc8f5fd76eba8181f10bdaba4. 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/USMAC0300116.
Lilo & Stitch (Japanese Original Motion Picture Soundtrack)
He Mele No Lilo - From "Lilo & Stitch"/Soundtrack Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa51cbb744bbdad9792a16187b42541a283726d5295e7c9c352cbd8cf9573c0a4. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USWD10210259.
Hawaiian Roller Coaster Ride - From "Lilo & Stitch"/Soundtrack Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf0755de6a7691e728701c8b870db4351aebd07ed8f1a4e93a5932f1698c9900. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USWD10210253.
Hawaiian Roller Coaster Ride - From "Lilo & Stitch"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf0755de6a7691e728701c8b870db4351aebd07ed8f1a4e93a5932f1698c9900. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USWD10210253.
North Shore Children’s Choir & Key Cygnetures
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e3b6157e405df2258309e16ad45cd386947e57bfb43e383b6cf9b88b5e4df08. 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/USWD10628959.
Lilo & Stitch (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15f162157448c5c20670a08a8392a99e766fce3b8cc45e66434aeb323c0c579d. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USWD12536664.