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 0x660e4494b7dc6b1554520705716b5ce3b0e5c79f05f3017c8d31d8c710bf7f2c. 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/2a9dd0b8-a164-43d4-abba-7c2b4cea28d0.json and https://artists.proofprofile.net/proofs/artist/2a9dd0b8-a164-43d4-abba-7c2b4cea28d0.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 0x395f94f5d7548c94f07568b6436c40699cd2ff1077069a0ac008e1d73953119a. 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/QM6N22354693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf038641bfb071bfc3f69198c6518268c007f655369b03e1869c42d1044df24c7. 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/QMBZ92261957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaff59651177feb2158e3b2296a16d75c5f39a9f9c2bbedd2988a5558c7a3217f. 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/TCAFM2132896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a53f52a52d8808cec922d0659a3443ace9e39fa6ae72bb791ed1aa1c415b98c. 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/NLE802100072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63229dc298969548da8dc560de3fd108e6fe069cdb15572ccf1a90f94632dd9b. 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/DK4YA2286401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53a0e48f7941fa759eea859c61fc3796a30731c9d4ee18ecd55eab407340650a. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZMEP2256707.
Better Than Me (feat. Okafuwa) [Extended Mix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48498a5898c6f473aa02a7dbab92844afcf2749ed55c6579257e97d4907be401. 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/NLZ542201104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb6e49cb7859bd84acc21f42faba0b58ce191b6a0170c84dbb01c48145815c74. 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/QZK6K2201932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6bf20f8f3b194842a2fa4bfa2d26db0fa1de8e99c3f392e731bc0c4561f72bb. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GB2LD2210099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc11a828b16b444f88801538fec9245571f7ab288b5c73a25325d8410e826781. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZHN32281609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83fcdbeeb91eddd3b0ab8dd19af60ff93797b23d8ed7070e57e7a2cf4b7fae66. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GB2LD2110375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x331d518ca70e02ce30073977aacd2aa439739c8cbc9cdfc652f62ebba4464664. 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/NL2QC2100233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb03cd6cc81ad35d1d1983266c6bc7531dae5d017f2821d87fd0b381354f70cfc. 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/GBRKQ2182218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5808700b063bb26c3523a5415b3359a6b0c075fccd9529f16f8b75366d216fdd. 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/NLT2H2100087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x220df11b62a817b32ef3232daee99dc0934679a43a8fcf1cd10d888d8e0e828c. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/CH6541845104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9117a1ffe94f4cd15045bdcf4e22159f27d0c4a9e8dc7f99220e7c35b40e2727. 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/NLE801900440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeac64c607ff000892507d10bed7de7a2b9ca0b45994b5446b0d8d172c0598db1. 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/NLE802100211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d347e404d1fbffbd74811b1f07cb09027b5d8feb25cbfebb4744440eeb9e315. 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/NLE802000155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabf1c34a85e9bad999897c14a5bfab0154124b073adc5b1a26dfa8f4ba5b809f. 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/NLE802100033.