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 0x97820f66783ca76287a393500feea1f53e32b7278d8d246209ce0bc196261dca. Chain 2 (Bitcoin): anchored in block 953657 (2026-06-14T16:43:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/50858bd4-7b23-4c77-a548-a99f4745d8ba.json and https://artists.proofprofile.net/proofs/artist/50858bd4-7b23-4c77-a548-a99f4745d8ba.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 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 0x58bc4bfc173411fc5fff8af8821b0ca2423c968ad2b2e8a595999e5452799dca. 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/QZHN81945441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38404b5ad6b41658c310cbb6d6ca8ee2014afe42a807fbb19dad0adc6873e19b. 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/QZHN81945442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6428caa6e92242b0f917d75d52bb4caaaee3d992598ef538e01bb2875b7cf600. 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/QZHN81945444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49fb412c7adc18816ea2290dd8b537db30511565e0371c7ccff909df07241991. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/QZHN81945445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6abddcd49148cc461d292e0c7b73ddd05eff1d92bde5a918cf5e1000ec1faab0. 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/GBSMU6887784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47c097f78476be6a203a1c4ae6bcee8d95f61f0a5eb1bacabc657e22db0f215b. 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/GBSMU6320342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x225b67a742e491fde043c7c13b84cb867ecc142de6874902bb315b5a2bee6d74. 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/QM24S1919575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1acd4eaabbd8938e129a299b1d65ce737ba754dbcfd0336f039cf83ba0a28da0. 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/QM42K2173021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2817fef40f21c70cc939a9ca44cd930bfa9df4b128f78fe868dcd287d789f134. 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/QM42K2017236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98dbafef004488e1a9a3a21b2aabaca5f2bc7e8babf72dd5be2ae178533fd565. 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/QZFZ72173347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x677ad90b0c1349e3148ebe96d54f99274db9a3deac48843328402c942b29501f. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/QZDA82175682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x863909c752a29f1a127565376b11f4a52678a7ff95537d9005e818e778c21f62. 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/QZDA82175683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2865f820d83cf511fd32b757d60512ba16ef6a1c45fdb9432ef79f70b9ca5149. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/QZDA82175684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f00c6bddb336dd3b8224a6121bac2ce01f27f482f0a9441d806c38edf86c145. 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/QZDA82175686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x743f8266e9a4b64b1f5e3d7ad90ac3e1207821993bb9cd6e54584f099ab5a798. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/QZKDK2195110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4397f7d425ff102a2e73e821ec59943b4631000a3be92ae58c553cd4da8a9bc2. 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/QM42K1900678.
Crystal Collective Presents - Season Two
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38b93a26db2386e92085f3b6dd9021a9e6d1f66820c63a70fb651d36b2969b22. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/QZKDK2194047.