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 0x5fd3a9b7e5a765f9fa07b065200617b5ca762441b9402e6fbabe6f791863ebf1. 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/cfdf93a4-ef3e-4ab5-88a4-d999f8188cac.json and https://artists.proofprofile.net/proofs/artist/cfdf93a4-ef3e-4ab5-88a4-d999f8188cac.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 0x6b08aed232739a819275c8bcfcf0774e5fe93d7bdb39e52563daf76f8df6ca75. 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/QZTAZ2368327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaf6dda3b49920021cc0dbae4f47596bbc657a475b3e6871275389fa58592b1d. 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/GB8KE2150731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50ba4d33aa297f4f4c4027fc3b9be929b39151906c31e4a99703f13de1213291. 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/QZDA71999294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaccf16a085b1bba3efc8495724e6553a0cc189470a610a781155633dd6e8af84. 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/QZDA71999300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1547f6100602f2efeb5504596d7c6649b8fee3da2afb708ba3eacb18fe2c9808. 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/QZDA71999306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa326c311e4c6ad379f7294de0c3eb8d2c78616050e009a86fc2de49c8fd44267. 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/QZK6P2406138.
Ready 4 The Floor (Remix feat. Local & MC Vapour)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fe343c000cce67ab4db58dcb09b1f16cbd92bdd3422ba0b3e6dcb1300f0bf8d. 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/GB8KE2404941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5e10f84bc78211afa585154e614d5fbc4c104419eb5ea102d9b0ecb6adbeec7. 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/GB8KE2404942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28d843577e08b7fd8f994d3fa6a113a3449c8e868ab0e8cfea1c3d02c157fdf5. 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/US39N2311806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa850c06375bea542afbd1348df3e4ef23b43e78a712a60b1ae1774956ded5a96. 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/GX3Q92040121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50681b0a72d30c8ebf07e9b039af3627fbad56a605b5898638fa969490ff0b5f. 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/UKXN22109762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x409852e83c2883235196bfe5e84c86d8a8599221920b3aa04769f966f8e8cb14. 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/QZ8252049064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x088713161275d56a39fe30c3a37baf6d43a0b2fe17de6eb6314ecba8cdaf7ac9. 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/QZNWV2059303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x126dc4dc5722a21c7981238452f96d04b9cb244b79bcea75190b4b21d63b5c0f. 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/GBLFP2050823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e4dffbe6619d033c2f32af2309b2386d107dada2e5305c6c82845dd3fdaf875. 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/GBLFP2041280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf045d923e94f2d53934e6413e155f41882df7ed3278d12542a216087cced09b0. 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/GB8KE2056738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dd4e73d1728ce09ab95d0ee5c6890bdc078ed82d13244a9bb3ea4a448d1b9fd. 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/QZ8252049080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x409852e83c2883235196bfe5e84c86d8a8599221920b3aa04769f966f8e8cb14. 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/QZ8252049064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3c865b90b8aa0f9f27fa5aa609c0c21ba9b32d4f552f75bfc1f6522f80e1641. 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/QZ8252049078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e4dffbe6619d033c2f32af2309b2386d107dada2e5305c6c82845dd3fdaf875. 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/GBLFP2041280.