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 0x336dfdb6840e91cccc53f8e736256cbf6dee9005bee3a6afbb1d1abcf1471ef0. Chain 2 (Bitcoin): anchored in block 953786 (2026-06-15T12:56:12Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d6fbcdc3-cdd7-46e0-8f34-a60c67ec0b66.json and https://artists.proofprofile.net/proofs/artist/d6fbcdc3-cdd7-46e0-8f34-a60c67ec0b66.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 0x8222bc7bf6fc2f59e97ca0144169d48933c0f4ce2f2d21e504a2a7a842462d9a. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/JPB600910401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b99b64eef40797c4ade303b5b540074fc974a66c207dad28a933fd62a59cf71. 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/JPB600922505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd93076b58bc48bce85d54b56763249f8730dc9254ec7fe4defaa96e3964ff4c. 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/JPB600927904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x131f19b76c843ac50b567183acf1c3c58ee99e2472ece2d726efd9ab9230794a. 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/JPB600920301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3a14514c96e6d6879884607304efc9b40c555a0cb25087498cde64fe7c6d517. 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/JPB600944401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51282eac85565b79cebf3beb2666afe100dec1c17775cabaff3dbc917f54fa47. 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/JPB600910402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc86e249c40cc68b0c4fe42f524dfd4f989e276767999d3396fad1c1d8ec0c0c. 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/JPB600935903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c71ab9e3c3b57f0882dd1d5ddaaedb7559dffaa6a73eba08c6bef14077d1f00. 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/JPB600922415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x986c4d84f284cf5285e0103d22d82135c320692f43066a93d29ce731af7be072. 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/JPB600939702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57c3766917db956e2f9691a96ab63860721c26a702aa1c53bd08f4aaf77add0d. 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/JPB600922405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbdf679f9d4742bf7e98ccbf1d152c524bcb52287c6a77db29b98f6cf167c7bd. 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/JPB600922402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e79e755ae8d15ce1d9164282c6d336193135d21da340a900d04399e7a2bba1e. 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/JPB600922421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73f4a00555bfd2273c89ec8c640acb70a1e12ebe91142d62b0f15c9feeadf69b. 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/JPB600920302.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3a14514c96e6d6879884607304efc9b40c555a0cb25087498cde64fe7c6d517. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/JPB600944401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a96bfaef18ac43b0b563f2ab02e211ef61bba871d1e7822172654499b45a51f. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-21T21:02:57Z), 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/JPB601900145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32c877eec7eeed37fc4c188fd3ef35baf02cf26c4b434d4abdea3fac098cbf9e. 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/JPB601026501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3a14514c96e6d6879884607304efc9b40c555a0cb25087498cde64fe7c6d517. 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/JPB600944401.