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 0x5a000cbeabf7afa6da074ae88eee653210940f484d09115c1dc7230a429ddf9a. 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/e67ff914-f4b1-45ee-b75b-6a3fd9a4d134.json and https://artists.proofprofile.net/proofs/artist/e67ff914-f4b1-45ee-b75b-6a3fd9a4d134.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 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 0xd43583a903707242fa78df1ad266b1d11a31f108fab7edf6abd34e491f36e55e. Chain 2 (Bitcoin): anchored in block 958476 (2026-07-18T01:26:56Z), 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/USE830903341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca55f87d8f83b2caca6294b61212211cf0c2c389b327cedf6328f9bbac1332e8. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/USE830903342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f7be8a6146557a8e809d5b8a89037bb4d35bf52da05306d7510c81c3fd9781b. 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/USE830903343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15a4a7f74e5cf057fa4e1b8fa6dd43cba6723aa9ec3c765590cb023b6fc739b1. 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/USE830903344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81ac2ae68b2280ec7e14fba8f51f6d62e8897e86e689ddf71035e3c9c9b61279. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/USE830903358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8b03c59371a2133174404b0403d5bb7538ca9916e28891f10ecb479320a97bb. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/USE830903363.
Dust: An Elysian Tail (Original Soundtrack)
Penny Arcade's On the Rain-Slick Precipice Of Darkness Episode 4
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16fd4d1c8d0b0e3873ac986797228cbef979c8d58012626ba2feafc5ed056fae. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/USE830907348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e0c61393dbfdcf901ba1e890d5e72e08c2ca540bd712e84ffd356626b42a959. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T19:17:28Z), 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/USE830907351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2125a2cb2ade2523aa0762c27b96339be0888236d7b1141a10906d21307380f. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T19:48:03Z), 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/USE830907352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2777a0054ca217a14b9a07bf2756ce9fddedde62bdc77cf0c1f0ddd084b59e7d. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-16T21:55:37Z), 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/USE830907354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e0797375de130718b2efc82767b26d5003fb0618ac14d6dd280f8f18c29102b. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USE830907356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e4f64b84c54c5554bf55dfbb78615af4e059b7c19637dc7d4ba3b38a062dbe5. Chain 2 (Bitcoin): anchored in block 958676 (2026-07-19T05:43:13Z), 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/USE830907359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33d0b2739b2474b1acb0f2decf4ab4b102faabbccff21181eb8405cc298b3f91. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/USE830907361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4e2d0728661816cbe98fada4fa5ad329cd75f1bbe4353094a7d2d84a5cc1c03. 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/USE830907362.
Hoy, Small Fry! (Zelda: WindWaker Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x477d9b384e9f9e517d5abb409eae9e14006d8bc02d993f26e33f76f92c4f3354. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/USE830909177.
Beyond The Imperial Prison (Oblivion Medley)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29c76a602adac21b23267fe8306fe318b166931909f6631c9265a0697bde3297. Chain 2 (Bitcoin): anchored in block 958947 (2026-07-21T00:53:33Z), 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/USY281609783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48bb4ebe4daf53ca060c71abd344a3afaf01cc108e8c0e90b009ad19fac5b338. Chain 2 (Bitcoin): anchored in block 959069 (2026-07-21T22:32:59Z), 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/USY281609789.
Never Stop Sneakin' (Original Soundtrack)
Cosmic Star Heroine (Original Soundtrack)