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 0xd73867212125c0b63f42fcff9d4c234dd7b77ef463d419136ad39b319144b737. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7dac520d-f3dd-4c39-9f97-e60d1da8dd33.json and https://artists.proofprofile.net/proofs/artist/7dac520d-f3dd-4c39-9f97-e60d1da8dd33.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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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 0x0645a365a02a5b016857ef3656128adeb53992b4a52258cbbaa94ba84faf3ce7. 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/BX4IU2314736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebef46077d84154b7a3cfe75bd38f229018c2758dae7862754fc18e81ee4537d. 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/ESA112306495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b8a6aae600486b902c1e86ec8e77bb3e7d9038c9080d2ce1963511ddc219b83. 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/BX8VF2200021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0329b4dd7660ad83648c56873aec2cfee69fab997b881a6c5c2a931737a1de5. 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/BX8VF2200034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x701a04e84206fc1e919cabd76a63073588ba2205a1c068178f7c1253a0919da7. 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/FRX762227053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb05282248ca74e3dca35f4373fec15ddf120a3cd424b032223ffc9e4d25370f9. 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/BCEFK2200005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa85bd7ab760f3eb172f77b251d44055a7de3a5d6a73130da6c025d03c1ad36c5. 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/BRXNJ2100067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x546e38144f024a28e6e2468fc2612704b8da6ffe1ae93c3c83d3235115cb8a7a. 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/BCEFK2100028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaed617e4c3ff4485709380caa459fc340c95660e0b63bbccf4ba48c2cb13a925. 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/BRJGT1700059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe36cebf701ab193f1769b08c120079e20494edd29ea8cf85e6a684dd156d4975. 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/QZQAY2592408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf82c6fc4df9ccef300154623fafb5e4898c0e680cab1381b4bc0d5970bb57967. 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/QZQAY2526486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39bd6025e2b9d6fb5efde1bb31f27062dbc5d7b594ee0f3af5d509b6d4c0d916. 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/QZQAY2505209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9bf67e982c11a54c722530b6a07d2647d052bd72fb31ee9f5a19ff889717308. 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/BRJGT1700058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x473698e1f55eeca579fd3a2b39cb163ffb5450e7bad20f79c1b13e401400ea40. 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/QZQAY2526574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x257d7369cb8a27013a41530a13c66528a2679ffd848a38e2bc384a721847c29a. 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/BRJGT1900031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfa693a8fb2f64da7a1a28fa040a12f20442edf83a6d11bea336057d5267a400. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/BRJGT1500062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9351dcc35673c0baf2379e61c5a2dcd02c848e502edc90e0b0928ccc908718f5. 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/BRJGT1400034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e87b282e9cf027619da6a7b07b9550fcb5f26ec778b611461dc09e58b4f5c80. 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/BCEFK2100065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16559bb071eddc54bc75f3624ecf3881104f55f4e25ce2852cbaf4b604e7d814. 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/BRXNJ2000031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61374cb22cbe88e4611822abfacbf1e360bd842cfb325b58803543d0be2cadc2. 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/BRJGT1400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x111008f44666a9e0602ce191f57b50348f38a373a3180efef10c89bab5916006. 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/BRJGT1400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9351dcc35673c0baf2379e61c5a2dcd02c848e502edc90e0b0928ccc908718f5. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BRJGT1400034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x925615c3fc67d9ba65ee258003cf9d220e389b4f43d417e506c88a70e0bcb41a. 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/BCM112000001.