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 0x33c0dda35e2cc0d20ebfb9c8319b27b6a4ac81cefbba3774ac7dbb3e26fed3ef. Chain 2 (Bitcoin): anchored in block 953817 (2026-06-15T18:10:31Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fd793edf-5518-4f0c-9763-f4a208951f4f.json and https://artists.proofprofile.net/proofs/artist/fd793edf-5518-4f0c-9763-f4a208951f4f.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 0xc5914aa9a766f3234aaf185dac42e57983abdcd45ddbb75510303769c137694a. 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/TCABW1420387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fe74657a22f5136670a197745da009be5cf5bb8adcb1b797bc27d527433c74d. 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/TCABW1420457.
Ahora Que Todo Paso (Runaround Sue) Studio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8e108d688c24d10fce820510ac7acdae617ddcada27153c4a7a52beaec69d7c. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/TCABW1420460.
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 0x82cd185c8bf27c70ac81b01fe42ea6e2d05f94235416fafaa3eadd0957f270a0. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T00:41:31Z), 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/TCAHJ2365500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8ea4d7039000688057e5a90cc39938bb9acddf69324def295399792853dc23e. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/TCAHM2380378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0835b1709cfab748d6062fad22c78b8ba6e5c97d012be80686bed53a835eee21. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/TCAIJ2424599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ce68c7da359a15c8f77f3281591f0f5d63a1a98cc34a3f0dc498db579c740ae. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/TCAIJ2424671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1585eda7f494ee4c7f841f5574be1e6804b4063cebd16b9cbd7d531cfa1d867. 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/TCABW1420248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb57184b3a11071cdd8f1acaafb3c4f2f69722f8e6adbccfb9554608ea85a9a5. 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/TCABW1420251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6336749c1610123c26021803aa255b647682d05d3e214046ded1dd82c1677018. 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/TCABW1420270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29d53454e3155d5f6847f66eeb7a640863f18ef8e65766ac4a63c1eb5f7a07c4. 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/TCABW1420274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ed3cd8bb5495ccd9b9a09185c42fc02c07cb583f8b3564029e90d4c55fb781d. 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/TCABW1420279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74f65272ddf2afe21a9c5401f856dbf949d8cbc863718ab29f53d1c63b6cffc3. 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/TCABW1420280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf87953f3ef94dbcfe31eed7479e0a1833a89c0a9166f8a58507a47139ff2eb6. 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/TCABW1420282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe52af939ed8848c32e1b9f17d4f2c903a0503c9a3db816394a1600551978728d. 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/TCABW1420286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99d06c7ca8632dd23374fa1225dbe867c5a6152ac53b218fa564aa9f29b609e7. 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/TCADU1824218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe67f327818ae3695ce3013b8cddfd786e3c88b2a16e2b9a895338b89875cfd70. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/TCABW1420271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0125733253174aa3c4e15a02806b618dddfdc066938fe251b3928a0b6e3f02b7. Chain 2 (Bitcoin): anchored in block 960485 (2026-08-01T00:10:46Z), 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/TCABW1420272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc620f710ce6ea35c8bbf21afcce01860f385a7fde5f4e4e669a2dfc4449e702. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/TCABW1420281.