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 0xa0581365cedde3edb639061b9277d081211fe71f01cc986d8c93b1ec02cdc705. Chain 2 (Bitcoin): anchored in block 953697 (2026-06-14T21:49:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/678348fe-b3f7-4976-9e2d-df5712b13744.json and https://artists.proofprofile.net/proofs/artist/678348fe-b3f7-4976-9e2d-df5712b13744.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 0xc317b84cfee4dd682edab2e99ee59f5f4586d17b0d950a7f6d5fb50e22c67da0. 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/HUA612201691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x665993a576ce2a4b579603b7423953c5893eb1abdf4a160d309a627e40d1c735. 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/HUA612201692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc18703e4a3732aee930c4596f399257c18711d32f04a2492b9b16cb2f67d2129. 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/HUA612201693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3807016b87b821c588ecda644146e6c3f38384e6ef8514be2e0d8df96009edd. 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/HUA612201694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52e75b57ba44035c18d1d1e71f75e05f905bef54c39a941777e955ed2f50ed35. 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/HUA611902280.
Dalok, sztárok, történetek! (Pálinkás Gergely és Toldi Tamás szerzői albuma)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x991bcaede80c3e2d2ad569c5097c06a848d42f8dfdc3ae226efde92c48d31b39. 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/HUMAG2100242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadaa485ed5d823330ff5521308e26dfca119f805a6e3939d298e662ecf3f9d18. 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/HUUM71300057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc3222309d3896905c53d8a5d4fe76d1b48ad35bf1250f7dff9fb2ce8b750b38. 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/HUUM71300052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4badc6e6fdf27658be771fb55f9f00a8e59bed9ab5c9d3703e818e2fd6028bc5. 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/HUA612404938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ff20f1a49d475224ccf3da88b8b9c1cbb46f46c9ecf9e791ae385c3b6925311. 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/HUA612404947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdab02bfe552e050889ee2346ed990e949984f0c4ca3147b8db278c55c75c3620. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/HUUM71700063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x897472b09ecb58a23f508f5b8431f6d1d9ee64b9a49bb8aeb1124b99d0ade6c8. 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/HUUM71700076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6532ee011acdaf996562ee42d77682990bbde85dcf2e4ee135ece07566ce05a2. 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/HUUM71600072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80269389923ad0eea1259a4c80dfa7cf266ad8be3ecda9e2941b9732681752ca. 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/HUUM71600075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27d94e5e56c83a902d8e87f0bf763967f6a6d88f732c564457df48ce43653b27. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/HUUM71400070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52e75b57ba44035c18d1d1e71f75e05f905bef54c39a941777e955ed2f50ed35. 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/HUA611902280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x157c8ac7697216737f038937fc489b87e4dab1fd44a291df8651903ab8f68429. 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/HUUM71400087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6df939a073ee43e12b43cec1673574e2104bf75546804b68ed7a515830137d17. 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/HUA611502700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b646d6d5c6f1768f8fae379d7b8bb1477ff7abdba2a6b7f6c3a8daa1b363d59. 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/HUA611502701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bcbd501ac89a6ef2977699ddea25bfd1e47db264b8d14730073158d6486d734. 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/HUA611502703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d9e1a3af898cb3fd271e9f658c19a1f78d63863d583338b671db2dae6b6238d. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DECE72402483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0ad7c6be514c70090ec3961defd3183e8e202832e155b5fd9bd0c844b0fa616. 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/SEUM72300561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53e5894614db127867ccc2bdfb1aa4ec50b84dcb67673796848ba00bc5be9115. 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/HUA612022981.