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 0x275d156ac93fbec29420181e3dca16323ec698548047a6781d28a8a66af3356b. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f0bc4a7d-44d9-437d-9d3a-ecd0e9bbac27.json and https://artists.proofprofile.net/proofs/artist/f0bc4a7d-44d9-437d-9d3a-ecd0e9bbac27.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 0x7e50ea7ad7830e1492b6b2e7dfa3ff972a8618fb946ad59437ecd87195bfe792. 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/DEQ022009317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e50ea7ad7830e1492b6b2e7dfa3ff972a8618fb946ad59437ecd87195bfe792. 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/DEQ022009317.
Jos & Eli / Julian Wassermann & Henri Bergmann
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x541c7bdf0d6993fb710d4fe53bffa8146311072aba40fa3e20aee94b355818c6. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/DEUE22057290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf21f47203787b8d60314c2150903f0278857993bb34336693500fcdd15a72198. 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/DEU672000139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18bc9db4e7fb18da70009b43b7bcdc9eef154d794c87b7cc4d9b72b33afa5556. 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/ITFGO2300025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ae0b8b31a4b097bc9dfc4d102059e19a85fcf97c5f1d766bbf3604f46ab92af. 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/DEY472278371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96d43c66bf2f4fb2ceacaae42758d196fdcf1c296c74d73bdfeac57febe6087f. 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/GBAHT2301490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0573d76f27b546baa22bd2109cb575e304a54c6d4e1aa8e4666bf0460cba2f38. 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/UK9AV2200560.
Simulated Reality - Henri Bergmann Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x334de0ce1c226d45264c8acfdb4ba2fb21c517e57df174e2f28ccae8c116d475. 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/DEPX42200513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dc31460032864b7159184d4af997ca326947b976e522622ac3e26b038cc576b. 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/DE1A12193269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6591eec364530c108815c8adda8a2b5e8aa93e1896bdfd8c163bbf50d20c22f. 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/DEPX42200506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x969c77c23f221a93d218cb0ac870a8f12093aeba1934f04e02f8c025aecb4630. 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/DEPX42200507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb340beb3ce39128e258a58e3ff7781149a4aad1526e39870d0088266911ed972. 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/GBEWA2502298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6128cf9bc9fad26e1f8aa78e5f0b29013d338e47ea116b78ff3a5ff69d0137ea. 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/DEY472476394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6128cf9bc9fad26e1f8aa78e5f0b29013d338e47ea116b78ff3a5ff69d0137ea. 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/DEY472476394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbd40fee18750e1ced33f397d4eb0c4a717b02aa9e289ba79a985f893e2f567d. 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/DEY472476395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5a2cb63364f24414eae25e70835f7bb649e26c4d16378b997be3cf20c3c1c95. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/DEUE22057291.
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 0x328cac1f54e9c9c31b26c3e7f68ecdfa85af4e061e445d4409b2b539cf3c04e9. Chain 2 (Bitcoin): anchored in block 960175 (2026-07-30T00:16:15Z), 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/USA2P2356686.