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 0x5dd6871c212c597d931be5ed6f33d74f0659ea983c0e514a995c8ba2c154bac4. 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/89b450fe-5646-4a54-a599-6c5c845521e4.json and https://artists.proofprofile.net/proofs/artist/89b450fe-5646-4a54-a599-6c5c845521e4.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 0x8ccc14959f5bead6786cf7d89a43ae568eff73edc8c5b7f543e8f11f17a052e3. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/QZHN72426959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e1161a6079b11cf5a903d0a0850bd540cde0d2554d3dca818512cf85f7f10c0. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/QZHN72424511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dea43020ef244393e246f05ca7dac800dfd88363d11912ee84f0de69ada16da. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T00:01:46Z), 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/QZHN72426956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3984971447bbcb11b7441d93a2f912b6c53b340e56e87e987cd44addf35e074a. Chain 2 (Bitcoin): anchored in block 957759 (2026-07-12T21:46:51Z), 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/QZHN72426957.
The Song That Plays As Your Life Flashes Before Your Eyes
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc157075256bbc05d5c74aa084cffcb618d9b5ef91f36d6c49f6f6c7c46f40b9c. 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/QZHN82470683.
You Accidentally Started The Boss Battle
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78a3c43d519dbdab76024791c185a6a37cbf64aacce21d53bd0ff1d9192c8c27. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QZHNA2453042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b6829a063c4ac3b08dec4f2264b5ebfd5fab87ac793c1caa34e97a8235f21ee. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/QZHNB2462833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b9ed804839b12bf6684925e9e719943dd924fe04d1c0316dd87451f9b275377. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZHNC2468985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd46e557fcc66a9fcae313fd1ff5b1b53635d336c945ab7e4bc284d4cd04c2329. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/QZK6Q2445854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9da7a81011d823410a4e5eaa90ddfe21492dc01b55bbb4dee150d5137d31c032. Chain 2 (Bitcoin): anchored in block 958590 (2026-07-18T17:28:56Z), 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/QZK6N2415531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6b6feddf1b36fa794d2ad220def4801c22219c69acd23ac12bc423da8974761. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZK6M2424977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x647d2ba4920688d13a924e6060fb8b1663df2dd19b4a66376828a8b639b47177. 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/QZK6K2468415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xead96ad5ad7b8d5e8f928702e70129f57468e56865d611ee127553834abe929f. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/QZK6G2446282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02cd6d568e767671324192943b0f574e9772a0b46e24ea960c66c9087425ef85. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZTAY2456308.
This is What It Feels Like to Look at Her
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18417454804347bc7e759cba9950da8d4a383d43d03556328c38ac81a3e8f9d3. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/QZNWR2544720.