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 0xe2d7b5bd33249669152ab6409c3bac5303d7e1e1032516adc011f5416730800c. 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/d912ed99-f1d0-4366-99a3-12ed9c216312.json and https://artists.proofprofile.net/proofs/artist/d912ed99-f1d0-4366-99a3-12ed9c216312.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 0x4d6eb51d7f94a1c50843680550798c51eb7eb21874c6a331e5ef0f92c349436e. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T23:12:11Z), 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/US4KH1656707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xede0a05643c119580649ed4590be10bbc65911ea0645217744bce665540f3d31. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T05:01:53Z), 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/US4KH1757303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d0f6449348b122b912d828bdd942a0f7d5cd9d9250127b8904c45623a664308. 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/US4KH1757304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9db5fa157a38a03b9ce00b0143ff6fb8ecbe602daa9369089176f416345a013d. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:09:46Z), 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/US4KH1757306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50f7c6fa804ae11829eb24a1457bd92315fa3e8dd2e4a4cff8a0098ae01af6bd. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/US4KH1757308.
At the End of the Day (Original Motion Picture Soundtrack)
In I Dimman (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b52f6ca0144e408554d34495e7cf811bde789f690a491080068d80018cff9ba. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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/US4KH1959403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6396f723782eaa10fe49dd935d948beb1500a08d8f6aee08010f478faff238cf. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/US4KH1959408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5da5f34cf6ed64427146495f15082bcc96269d196ec1df6f01573222e52f959. 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/US4KH1959412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbc7df94c7aa446c948c10dfcaa5619299d245feaf6f314ad45e263914ddeab5. 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/US4KH1959413.
Sea Fever (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88bed7fc4db10b778d5f8b2adb08fe924e7a65daca7360d01dcc8c8ce8121827. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T01:48:32Z), 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/US4KH2060802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd394ee43537f8445492eed99ac6b640989d1f2bd942268d7d73a6706c55c1e0e. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/US4KH2060803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x063c15c25ebabc521a45aca24c8ed434612daaf22447693fee912e0e3518a9d9. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T03:39:22Z), 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/US4KH2161401.
Making A Killing (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77c4c4fd18b7844ea85d44f2e3e99e307e82fe4b24f833d4be0e0e1fd43aeafb. 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/US4KH2362901.