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 0x41f913a18a9367cbd04969ce20348364546ebe10ea65aee6258e094541a78fab. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6bb8c324-7dd3-41bc-8933-3e8f7886148b.json and https://artists.proofprofile.net/proofs/artist/6bb8c324-7dd3-41bc-8933-3e8f7886148b.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 0x3532faa6d36b000b1dd8243e66e53b14fde174f2096a28870f4d45ad4911e827. 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/QZMHM2073471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdc57f0dc6135ac9a8c5367168b8cb7b81a39c599ce00e9e99b2518fcfb1a6c8. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZKDK2207383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd21cb764a055f3be36bcecc1438cd3febb55210e9df30aa91376c06107e4d0ad. 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/QZMHK2276896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd1b5bd570e979a3d317e2c61a323acf94827bfcea4bbac3b071f60c340d23a7. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZWV32464330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72eb2f42e9fea179e3a24192f7195921545d34789995bee681bb3a52661dadb0. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZWV32466650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51edd7d0899ade57ac6f0a6cb41938ab00fa9b11a7f7d8fb14b7e8fba905d860. 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/QZWV32467503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4075c97cf35f233ff996451f466a52acec4ed6a977f1ad77d8b49e1d65f533be. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZWV32467506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1eaef754702ba241d7cc5afb09bb885834fe5cacb99a42c4dbc52d3ab842c71. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZWV32467511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd0826ff82b15b1475b7e501dc79f16dc3df61e256f10c4f06746833381a2443. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZWV32467515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x356a35d71783f339791dc9fcd84f84ed96ae37763b2ce6c280a27730d59ce347. Chain 2 (Bitcoin): anchored in block 958042 (2026-07-14T18:24:07Z), 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/QM42K2001197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaad190c346c8c0c877331ed6fbe3c0f529fd8b839540f9db06d1795e603dd83b. 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/QM42K2066124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37bacd02109568b7aacd5591fe06484af76001bb2c088855c316f77ca0ce886e. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QM42K2033269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48672c7a1921c322a17b18af6b4a863bb466138bd88f4577408e39f8765bcff1. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZS662177991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf12e1a82e80fc2f3e357c631f5efa7af98fd47a73da8ec3763172d01778e8330. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZS642196683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19ae6f9d2d0640e683599ff8426753829fab7b3f0f315f8ceeac6ce66d301457. 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/GB8KE1950845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbee3cc8babb2679cc6d636c46039eed1759105e0e6a0e929a6e6ce2b9ece873. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GB8KE1953835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x269ed302d3a0de837dfe21d3fc165e5dd2e493da211cfa5363efacc1b8a0fe6a. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZKDK2077316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a72c9d65da6d5ec5693c654f8d7666300571c3ac116666e39c0ef4d4b27b4fc. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QM42K1939950.