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 0x7e71fc5426e0d249526813c9673e0baf7867ebe7d23785e764e348522e6114c8. 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/3985043f-3530-493b-ad33-8285249b15e1.json and https://artists.proofprofile.net/proofs/artist/3985043f-3530-493b-ad33-8285249b15e1.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 0x1e4c5bb84cacaf61676f2ff5436a55db3663d9320ce44433a4b4720804260674. 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/US83Z2303613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dec069284076495e74aff2fc8883f286d7e02c83ca2af06c244c058e27c2181. 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/US83Z2236157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f3583c0cbfda4a79142e8c680c736eccb817e4aef14213a09e4c1bc76b1ea54. 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/US83Z2481030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x343dffa1e6b690008e1a21475a2331db5269ad23ed290ed2849dcbd59194ef89. 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/US83Z2476538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fac8b560c6ebeea98dad4fbc2ca8d512e543230da7be99ea356e6d930a2ba86. 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/US83Z2462383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c397bd39bb88e942b972691b2766c68cf19ebe325d9537932aa54d1a65e8b32. 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/US83Z2202562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f0208cd8ec0cc6a36c58b5ff4c5865cda44a0e1b25a80daed05905b6d13fc03. 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/US83Z2139147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c12193a8562d7b6ab3aef6ab6d289e5b5857ce4ccbb520265b6ab3ba9060a6b. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/US83Z2136871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79de64d52b8267429e005b1e52c18f466522aaaf845e615001b3237a9248d8a5. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/US83Z2135809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4851585418072aaba53c1ce61b6e76d3b05b26c726acf16bdb4af882966b579a. 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/US83Z2121702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06b3396b6b3533eeaa982559b041d19de73fde9246502586ef8cbba5c7e23bf3. 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/US83Z2114084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc1c4c10f7a74d46eb89e7191fb0b2f2bc417497b928563fd54166a8b8b92442. 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/US83Z2473780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb57c3cadf68d543c4b2e5fcf97edc180ab9f3db35e4b8e92788affb052c2f7a3. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/US83Z2473781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe8da7a5d5d46247bda082a40ddab843ae6e27e965540b4f14f7cde3f32b496a. 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/US83Z2457063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x525eaf3ef27082c66e7baee63d6a2d88c7eb7854d97aca23a6170b9fbdc285f9. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/US83Z2457062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eb33b7e228e0318e9d85c40cf3530dc86628064a7f35db77d86018fbdc469c5. 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/US83Z2354424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a2fcb336a978294de2793088dad02ee07175e2d040b0210c1a8189058c7904e. 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/DGA0L2349734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4119c759447201f4ad116c3ad67412b9c8606e24c37d6e1b8a269ddcc5d02e11. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GBKQU2394166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd05f4f5c2ccdd9cc842a98ef7b2a19ceef4537476760c5ead1d237e763651f25. 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/US83Z2339233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeb99a5a8ef445a135e483d8b172daafb81aee41b826f7297eb50817cea4f87f. 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/US83Z2339234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x103e1d3db1438c150a216a2fdb0d142c3ba3ab0adca7752609a82f76633cb3c2. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GBKQU2366438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64bec2e858d81685e4a62033b32bf0821ec02e4d1278375a2eb6d84c96d345b5. Chain 2 (Bitcoin): anchored in block 957056 (2026-07-21T23:28:00Z), 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/US83Z2332575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf38ff5caca7fca68b6c6669b77338f58b0c1e72038f1b7f335b7fe936d539bc8. 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/US83Z2314762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f418f9da6c250cd2790539f01c1bca8926c77d01a9a94a3365303b9c4ccf108. 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/US83Z2308496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e4c5bb84cacaf61676f2ff5436a55db3663d9320ce44433a4b4720804260674. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/US83Z2303613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53c9b870e3c3695b05c443b426f1f3055e1addc569ccd9c30440a97595671bd1. 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/US83Z2232185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41c39d4fea43fa6652ea4c9f9945dd54f2d0af0c15c54dbbea93bb0b2bc6abde. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/US83Z2238061.