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 0x0730c09b9badf45f8fa8512791eeb051617a9ea272c34d1fa122cb1d663294c1. 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/425f8c89-c0cb-4d98-95c9-50665cbeb7de.json and https://artists.proofprofile.net/proofs/artist/425f8c89-c0cb-4d98-95c9-50665cbeb7de.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 0xb221c31cc3cf27de93e8f56e617ea7a79cdac0c12d49bc1dd3fbc1d022cf35aa. 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/FR59R1881523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb221c31cc3cf27de93e8f56e617ea7a79cdac0c12d49bc1dd3fbc1d022cf35aa. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FR59R1881523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43fd9e8d0663863ef87b8d6577374d9e271344304b2d5d08768fd5afaca4f7c1. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/FR10S1970994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8673c6851a6a843b3d566d69ea98fa45d9290d1ffbd2a52f6bf5ded082c2ec96. 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/FR2X41910362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54feb96648a15103ee5fd2e85690443b9fc9b0efcc7aa5da1da8878e60e1720e. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/FR96X1974564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54feb96648a15103ee5fd2e85690443b9fc9b0efcc7aa5da1da8878e60e1720e. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/FR96X1974564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6cb5f5f7a21bcdacc0f11d71aaf2fe7086dbc77e6aea25f8935d7edb177e877. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/FRX872025051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63efc4961d5ea56e61959a3037169bc09abb78c847e4fb49f8ddd80fe0f1ccbc. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/DGA072194955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63efc4961d5ea56e61959a3037169bc09abb78c847e4fb49f8ddd80fe0f1ccbc. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/DGA072194955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86ad55f1272a7f15b91aef2b342ca860e80ca35490f8766db89d08d473f7b3cd. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/USZXT2351517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86ad55f1272a7f15b91aef2b342ca860e80ca35490f8766db89d08d473f7b3cd. 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/USZXT2351517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe59dae113b057b9f075ba8b00a16965beaadd754c7726f69df06b0c5c6f349e. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/USZXT2352305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56d72a5860401da22f77ba242eae1ef03f4738eb08315db90ae11461ccb27c62. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), 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/USZXT2352309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a675c31ba964065fd3490f7a447dbf885f38979416dab98e313339f989d96a6. 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/QZNWZ2415278.
Rocks (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b79354bf144a0e108c6a63aa7f597a4a9672562ef2e4be62b27f26e18ffb9c6. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/GBMA21873523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8673c6851a6a843b3d566d69ea98fa45d9290d1ffbd2a52f6bf5ded082c2ec96. 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/FR2X41910362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b79354bf144a0e108c6a63aa7f597a4a9672562ef2e4be62b27f26e18ffb9c6. 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/GBMA21873523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03adc93f6be7c334bf714ed31ae1486363fe10908c26afd4f6eaa12cb45424b2. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBUM72000793.