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 0x843d1d746ce77c3a8de40bb00c582ece0b97cb4b3823a7aecaf4cf8d3f853bf2. 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/76eccae5-3a73-409a-968f-890938748221.json and https://artists.proofprofile.net/proofs/artist/76eccae5-3a73-409a-968f-890938748221.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 0xebb57567119da99041b2e20865a480fb7dcd397305d0cf6c03235dfc5a9ac559. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/HUA612021889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11178dd0025057feb2be6468828c45c475903f6c848324552ae0abf54a526bc3. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T07:43:58Z), 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/HUA612021890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5863adaf6c78385c5136f5b4b4b7441817f5c53700aed24c2e6e7a16c5d8a7ee. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:25:05Z), 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/HUA612021892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd42e55bc52ca7d1bb93ead6fc03e7e5c1ed5ffddf8a2197af4ed1ffbb39f60e0. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:56:34Z), 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/HUA612021896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x431243a3c8cc6ab0e39a10a4d84fd16c8dd2d9be5e91898c5daa3d787cf5dae0. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/HUA612021898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7488d676e514ef1eb4c892e274d4bc57d61383f546fe81898944f721f6541a2d. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T03:43:58Z), 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/USHM91710474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42fcd19fa819f9463af933ec6903b4da191ed71af398eb24b298b1340abacb0f. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:43:44Z), 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/USHM91710476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3efe07daabbb536eb82d0955b0e4661b382301321b7faab4644c7b40088fd17e. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:10:43Z), 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/USHM91710481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b1afc2f218cdc480171fca513de4995a0d40190ff26377de21a3cec96ba7f8d. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T09:26:33Z), 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/USHM91710482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dff75830e1afa723b58e8b470709e6d0868ed89a47beac44d21810b70937bc7. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/HUA611901619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b3db58ff5979fee02f85cc841aeff9853e84c0aa9b6daaa6c2c9d81998a0376. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/HUA611901622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f5f3dfa4f851ef518650279ecabe9cdc76a499352b968ad261e044a5d5bd5ed. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/HUA611901623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81f0d6e5565799170199964f9a8f2e49f32be44d690f279c6e1499da6d9f6aa5. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/HUA611901624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc88afb6df56f67484c144fb4b70aae50bc69bb60969bac59223148ceac79191. Chain 2 (Bitcoin): anchored in block 958992 (2026-07-21T12:25:27Z), 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/HUA611901625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39ea65881f610ff2e646fbf265005e9ce3671f7ab7e45a73a703592d5ade3819. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/HUUM72300013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe0e0683a130cd80c3e842be89bfb6d1a1cbc1be03db1181af32afe0b7beb775. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/HUUM72300014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53221eeed729fd89d8e33d9ec229bf2491165aeef6581ae403cde524daf34757. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/HUUM72300015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe4cb41f19e2f6bd2b1f5b9893038aeccdd3bc250dfb22ef28d0d2009fe9e81b. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/HUUM72300016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cb23d7adff5935af68fe500fa87a3048e4bc5e3adfd83a8497303825c998c1b. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/HUUM72300018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7a72171c1fc1c9f7297922f50d495dca5e8cc82a56d1b4b77633eb799561169. Chain 2 (Bitcoin): anchored in block 957714 (2026-07-12T14:35:57Z), 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/HUUM72300019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cd8fc550614511cf8b55e41323ab0348fcbb3e9c7f2a30fcd0bafb950bb3d2b. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:49:18Z), 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/HUUM72300020.
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