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 0x6583f8a68d14edfa2f749056f2a3f479c3b273dc724c1274e6ecd7c18016d31a. 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/48715e5a-796d-4cc2-923f-4a816d9b7bef.json and https://artists.proofprofile.net/proofs/artist/48715e5a-796d-4cc2-923f-4a816d9b7bef.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Every Pretty Girl In The City (feat. King Combs)
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 0xbc54d4899bf5760411071e0c12a339ad622379a6982376277fc481b6557b84b4. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/USAT22221508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0ff9e7f0f41d376d03cf726f84429287bfaec4c40d92d8abbf7cbe199bca52c. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T09:14:08Z), 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/USAT22210924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e66cf1cfa1c2bbec77794382bf135a762b345439e4e7cf09e4f23ce122b90db. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/USAT22301601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5f36c6721099044f67aafb140c9d6929122886e7ec8755912fe1cb213f02654. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/USAT22301604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0310a3775c7bdb97dfe7443e275b9a207c6bed62680d205e87ed53fda2c7c3a. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/USAT22301602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f96c7db6c69073018e15b81036e5d4c97bcc4345b06b2b483b3b46ac0720018. 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/USAT22304044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f6b8bb60458ca8ddd9147d775b6a8af99374a892a09f8edadf60af136dcfefb. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T16:16:18Z), 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/USAT22311375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2497a77c224d6b65b7c1f081720c900bc26b38b9868cec790d7cbd75bc3dc44. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/USAT22400721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcb53d6a11a9df12c780609b4cada80f3d394760ef39968a595adaef8461982d. Chain 2 (Bitcoin): anchored in block 958571 (2026-07-18T15:39:25Z), 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/USAT22314103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa82e35bd18f36018f6c12255e39cfbe777ba7e5eac5084c98a688d87fb08842. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/USAT22402707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c8f5da7c4b621819604c9bef40c1fb7f71897e2679ffd72c0ad1340825ba3ed. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USAT22001365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6eb5d77f747b2679046a9022ec537f4b701879a46cd71c3b45354d436d20a764. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USAT22001362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd94567974cb9d992178cd00e3b75c67240d84610ed443c4f31059164d8cdc9d2. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USAT22001361.
Eternal Atake (Deluxe) - LUV vs. The World 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0774f6ab483fef3841c8286e6b901bd78b1da085e15c7d360b5da0a7de0b9bb. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USAT22001366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f9176e385404f4f49defeb090f283388b9e268fa09c3b9ead0a2b2207695b9c. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USAT22207096.