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 0xdf47641355969e94b88c72b706e0fd2f3778a872715f5d735f6d419e69cd178e. 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/851fba69-6118-45d0-8589-c7f3bb1b0a84.json and https://artists.proofprofile.net/proofs/artist/851fba69-6118-45d0-8589-c7f3bb1b0a84.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 0x3b1056c567c830ebdec59e52f405ab609058c551bc0ad564f806186d2a9a7ea3. Chain 2 (Bitcoin): anchored in block 958992 (2026-07-21T10:12:17Z), 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/QMFMG1404589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5774643b4dd56a8e25f621cde7db77cce4a7419f569d60f015d0a26a6fe9f27. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/QMFMG1404593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d5aa5b6723969e5dfb31b0b3126d7a64624785595dcc96208c2d0346b6bb93b. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T10:57:35Z), 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/QMFMG1404599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca1b416477b81e7ef3202b998354f1a3af8385d534f7c1d60040d717ddb345f1. 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/MXF601700193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x540cfc8e5cb39893794c80a17ffabf735888e9c67d035c7c807086162b8d981a. 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/MXF601700194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6cc35a85a7f3ad27c660e684d790c05563a2cb4f104c1153c18d9a4eb8832b0. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/MXF601700197.
Se Lo Que Hiciste La Navidad Pasada... (Remasterizada)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3064e820f1fc3f6f28ca358217a4f7d4ef1bbd5a86fca4a72dc491eb0140a1a2. 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/USCGJ2112800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a89d64279c89b13345d72c28f78ac93a2f89a8db8840a999e097d8c7c398b3d. 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/USHM22103767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x713f2b7253146d231ea6ecd9fca0aadf74d581b33798f82481ebdd4aa0ffbb42. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/USHM22183286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe18ad26508eb8aa2b39e89ee01cbfc672e05218e3b603a17782b89c42cc60507. 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/USHM82148104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82c5aa4621257ce02b75db5a73b0d2a41123b230647398bb525b2271486ff055. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/USHM92156619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d4231f31fe0a4c526cfb7cccef725500b3189ccf279984190722492ed8bebdd. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/USL4Q2168857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x735cae7dc06c0b9c3a1714f9c8942d139102629ed52b672aed6dabc22e109c06. 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/ARIXB2301032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4f5d62700d157d2b4eb9cbc0da9f4bd5a1af9d4400f8b8928e179c9b34e9a03. 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/ARIXB2402802.
Chica Astronauta (Another Galagtic Acid Song)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed9a1a87c291f460c1c0c5a2e89d28d4d088f8939d693dba5f7c2e750f5d2d3f. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/QMDA71474946.