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 0xb218f1e9813534e52a616bd46448eeb38bb4670ef7593794ea20df2158a37288. 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/35404939-6475-4855-bf66-92895725abec.json and https://artists.proofprofile.net/proofs/artist/35404939-6475-4855-bf66-92895725abec.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 0xb433ab8c9ca27898882a9338f8c33c6c2d3637e28a3558cac552a9437550548c. 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/QZHN62398141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53d0a5ff32a4d861446443da6ba506e8898cefae687ad9b98eea4489df80ab03. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZNWT2238713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea5994da909c8cd522b5173b33b48ac4be48586cf9b2d641429ac3692fe8f2b0. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZTB32441966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb9b06ed046a2384047f521f7e4e28ada37e28d0fd93a9ea67ff83d96fe57584. 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/QZTB62420727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7707cfe7ff73afbe9d752a730bcefe4811abcd99c42307d4f55cd3945805703b. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZZ7W2486881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04f8546fcc896ef7ed43741608efbf0a0665fb3222a7c64099d3ad53bf2d9a82. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QZZ7W2486910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d37babfdf5f275be612c31ac082c1fdc2217f0d8502c7bb40a5af91497f2d1c. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:22:22Z), 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/QT3F42445767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91e2f4d9d910eb516f7c64d8be4a3eea7330bed6dc460f8c2ce1863c910652b9. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:31:52Z), 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/QZK6K2580705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0262cffe985314fe2f4a7523aef6119176891718df45ce4a18030b34bfeefe70. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:46:01Z), 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/QT3F42447892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef63b71f94ac16453aae0550e3205f09b58506d18d24ce0ca269d0acfbba0117. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/QZK6K2576219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40d44e1040b542b59476a46db46f290cbbf04523efb7a0df421dfcbdeb942e4e. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZMEN2590979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc011073ae0cf010a96b7716b4065de062ea75687e8af8ee778818a707173a6c4. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZMEN2589291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b00dd13d6149fa9985d42454b62d136a1a9eaa08e67da5726384c0786557559. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T17:59:58Z), 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/QZTAZ2563726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e029d7a932818aaa6465d54124282571b36f9bc4319f56a4b383a98f9eac096. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZHNA2597200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a832c264f7c503b51992a2f32b57e5c0943eb4032918fff2b3650f5d2525696. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZTAZ2563962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a832c264f7c503b51992a2f32b57e5c0943eb4032918fff2b3650f5d2525696. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/QZTAZ2563962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2d4c2db6950d673a3b109cefb3f2a756febde0e1ad702996172512695c70de3. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZTB72504624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b59262c6c1801042826e70207f3db64eb715120b74b42e4e8adb72db1b9c995. 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/QZTBB2583356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86b8d903d43d07c62d3a08f9caff77da2c8a53a9d0c0fa6aaddd7d1286511b99. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:17:45Z), 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/QZTBD2558040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcd0f399eff681cbf31f9c6380dd626f4ee0ddf5878ca4befde82bb8eebc0a54. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:12:50Z), 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/QZWFK2557036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6446a41ec8c8a550bfbcbe857010061156856bb97cc3bf19dc6f7072d65295f6. 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/QZWFM2530633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd19d5fca8346c9ee3c4cc85e779d0b47c985f815f5460a07df62215611c44aa4. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T07:39:40Z), 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/QZWFR2514950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd19d5fca8346c9ee3c4cc85e779d0b47c985f815f5460a07df62215611c44aa4. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/QZWFR2514950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27932089315508e97d24614eb364caf5dbc6134fbadd9bf22864a993cec01f6d. 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/QZZ7K2521959.