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 0x1a40dee42bd0d69c7bc8c7c1ba349272821bf6a093aa4fe471b5f09141cb8a20. 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/fd315ad3-b0a9-45aa-b422-703e24ce4b3d.json and https://artists.proofprofile.net/proofs/artist/fd315ad3-b0a9-45aa-b422-703e24ce4b3d.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 0x6bb9f9f52c50a11dc092337c6fcf052b9ef740dc574cbbef41dd2178faed90a5. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/IL6652306781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eb1396dcd713bd7f35832fd57679b82a788f17782f220d6bd3d9d35f41542f0. 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/IL6652409020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8b72867ffe09972d8f9e1528e6abffbbbe14f7ef0a3aa4692452388868c66dd. 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/IL6652308736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6071a0d8460aa62e6e81ce904ebf2c1a5e4fbd4f5df3d10236389ee09b46bc6. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/IL6652308810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2b6a0c14394c8f2c48d88ab4532e56348db89205a72db0b5249da2057494329. Chain 2 (Bitcoin): anchored in block 959026 (2026-07-21T18:30:59Z), 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/IL6652308102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d19e0f970f18f50a07dc7627662a0735beb0d0ecde302e8cd5294cf9caa006e. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/IL6652308853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4204a8e29da7207f39a620d758dbe29884a47b20352cbc27d78bc33f8d7ac898. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/IL6652308235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab613329721326c64e525e62e23859bcd3c31b58ea56a2790d60fd5fe69e8249. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/IL6652409869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e20a50c3affc9021f9e1cf9c96121e49a670b524067e7afdbcc7c5aef425842. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:35:06Z), 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/IL6652409871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3829e586ebd352003cabb590f0ca18246878643fe90ba05953f884543683ed8c. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/IL6652410976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1d54ee717932e52d98d75e8a384db5b61fd889147a97d4524fa02af5ac8c1f2. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T20:22:55Z), 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/IL6652411725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x492303f89731a112efb8c48c8772afe64209eac0a98445fbdb3443aa75ae0d51. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T10:52:11Z), 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/IL6652511828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7b9a8e5dd6c010a64607b3920392bd29037dcd6e85405f66340646799da2617. 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/IL6652511930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba8f30e5c6c625f2618a6cacb8e3856c9a2305f926c69ccd633d136685cc4862. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/IL6652512422.
Speedlist - Artlist Slowed & Reverb Songs Vol. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a9defb6fba7356a1d1098e8e1ae4c15e5645c3a5fded2dfacf7094c3b84040c. 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/IL6652306709.