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 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 0xd346aea7ab23d1a8630b82e61943e9f4baff9bd7402300145f404b6db80c9278. 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/ab79c419-d93b-45b8-8212-960b1ae95a48.json and https://artists.proofprofile.net/proofs/artist/ab79c419-d93b-45b8-8212-960b1ae95a48.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 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 0x6ab0644f89286b17c93a218f9ec2d696053153d9a9f02abe866c36abb713beaf. 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/NLE712300426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b24b3e48a962019f4b646acde08491a571e7488cac70b6c110266d521498e90. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/NLE712101018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9aef1a515323517d0aaf790d78693a3907205753c0be92bd38d0563f836c2b79. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T00:07:05Z), 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/NLE712300781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c36927a8e0de5115bcddcdf96dad2907a98e65b2443d9eedff37852d39f5411. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/GBKQU2496414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08e133042de4dc7a9d520743366b403454899a3cac7b0b73eaa37b5d56eb48e4. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/GBKQU2496415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71ad14cb22bf516ae41bc441117e8cbc2d4130de593ce7463569e5dbf8c6698a. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/GBKQU2496416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33987257b5244912c7753df33a0b6271f47047057ee49c3de4297dfd653d28d6. 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/US83Z2415264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0545f9fe8b910e988a19491fc79a1b83d179fde3e2e3968b2a8fe25bb1d4a4f. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/NLE712400682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6d519ba208be8801466422141cc792e25bf60acf4b7bea2f1b27f31491850c0. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/NLE712500252.
FSOE 835 - Future Sound Of Egypt Episode 835
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbe13fea137023b293fe7251ee3830eda1725994d3457aad8e10e6ce7cc1f998. 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/UKRMQ2301456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55be7ffd1ff40e3aa63edd78aae7fdc3e93457900c605c1e1315f5249d07368c. 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/USLZJ2374714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d90520d6a43d276dba944dfb9b33319a1d9a0ae2c99636644643aff02720655. Chain 2 (Bitcoin): anchored in block 957055 (2026-07-07T15:12:44Z), 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/USLZJ2374711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0371333583b0f903e7c009723db8bfc385315793994237080c0df8fc84b775a. 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/NLE712100732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a952f4bfded0d34b75acf1ceeba18ab5304048a63d20b09ec038f23f1782063. 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/NLE712100733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0371333583b0f903e7c009723db8bfc385315793994237080c0df8fc84b775a. 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/NLE712100732.