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 0xed418117c45e1d740012939ba501bfd5cca02a728ec2b1f2dca4c945c0ee3b75. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b5b92a7f-7afa-42dd-95b4-ecb4f3a13a8f.json and https://artists.proofprofile.net/proofs/artist/b5b92a7f-7afa-42dd-95b4-ecb4f3a13a8f.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 0x9db448d8e91bf649c1a0d1d53bc0bbbd5a5604af5a77911929eedc4b18f8f3dc. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ESA122436751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f4d63ca0fb5ad13b55f88e081ec4d5c168bde0ae144597ba169e037f6b2714f. Chain 2 (Bitcoin): anchored in block 960268 (2026-07-30T14:53:07Z), 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/ESA122436748.
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
Melodías Nocturnas que Susurran a las Estrellas
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbda18437b6fb6934c07d1477df8a1720c22e7f7077eda0acebb57eb1ac4048d. 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/QZYXP2311106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa10dcd1d236a7e83d676bc8f9a046f6c0f71931c28047941f311b44f705d33c. 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/QZYXP2311107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a9d7ecc56c4857d873cb22da1a665d7763798ce03ed6bc9256ed015fbe57da4. 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/QZYXP2311108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf35c8abae89c190f4c11f80a7c9d76a2b2ab1c48c479c9ce9ee47b6c2b3383eb. 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/QZYXP2311109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3da558a1ed1e5cdbd59b9f6b7a74cf745dcaedacf88051deca96ff42eca9285e. 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/QZYXP2311110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae2c2091631b3fd765687c2d426070f2b5b87a6719b984203e38b4782c127ad6. 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/QZYXP2311111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e5b8042c0b9d0d6837a9550b85caf10826adf0a6f869f8f063206d8ca4e88f1. 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/QZYXP2311112.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x802f8affca6cc7fa78db07debef5d371ed868c9a9bf4fe54741a756c8cd16983. 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/USLZJ1923300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b2db618a9e73d13c8327132df5dfd908b5766b63b752a3180460708b704092a. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USLZJ1923302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd9f83567a85d00018e64d98c9c77153ee0a3515dc4babf6974eb5be4fb749ec. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/USLZJ1923312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb998256d4dad432c404e832517d49a492c0b8cf248501cd3faaa35906d23ad90. Chain 2 (Bitcoin): anchored in block 960381 (2026-07-31T09:50:11Z), 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/USLZJ1923314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75224947311242a1a6908ef353f54c0c6ec4c237b6d2dc2043ac887f28214651. 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/USDHM1414868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9532ac9021507c609021c8f867fcd9331b9f6d7882c4160c4c367ca97a0dd3c. 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/USDHM1414869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ec525532558fda8b1a5fd2279d5d9c3b5bf7dbf9a1a46b83dc94378a0b3d3ed. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/USDHM1414870.