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 0xc5c59ffe329a5ee59a2fda64b785c7e8b754b624ea12014be196982fde3848f4. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3418c168-e1dc-454b-8e5d-8b2b64758241.json and https://artists.proofprofile.net/proofs/artist/3418c168-e1dc-454b-8e5d-8b2b64758241.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 0xa151d27623081c5e04da39a07ca2ef2957e3b02c3d3ba49046487fbb7d13d8c4. 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/FRS182160488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90cfdcea9345878992990d85560c12579358f9d0e2e6fc5c90d3b1488ad745f0. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/DGA052275473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9961dc5677103f5e1adbcf658e692cebc883cea82dbc6324bef53390d3515def. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T17:58:21Z), 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/DGA072281781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2804f694cf593e1e7109b3e1544a255a30aea152419c3305e03a198acfee4a8a. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:25:42Z), 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/DGA082271976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c957e1dd7850bd164926c36fedd37256495e1860df40bcc391a8212a3f61b13. 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/DGA092220908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4f021ab7d452cccb02b2870ce29a39ddc3400cae52642030c0c34d32134adae. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:16:12Z), 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/FRX202340276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0a49c09bc2173e4537b551dcc161ea4f8401196d6016f7e7bad0a295cd39df2. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T18:04:13Z), 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/FRX872326845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae25fa68b02c9f56a4669e74d09a35e337e931bb7d24f56b678fa86528bac594. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:35:01Z), 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/DGA0H2337534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27f24c2175958c98f9860ad30a906deea29e8ca3c72811e2ba8958b5ee0d9a1c. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/GX89G2424834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc48046bced301a5147214d336b1983e65e1eaa95d45977710461b97819d93d93. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/GX89G2463790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7e1654c6a755bfca23a7fed064a6bf1e3821f470583718e94525dd6536f2733. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/FR96X2429176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65124953c9f9fc1b8c4b44dace2e3855c717c6671639ca54b89518b50ac74cb1. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/DGA0M2459121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x551bf34502c66c4959a2f3c53089e076f83ff48db31ca4281988496cd62dafb6. 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/DGA0R2474568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x148d1af13ab360ad1098e4719a56b672582f9353942a4cef3afe196e39b55168. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/DGA0T2425071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdf6d1c7c3fdf31518cec1f92e45e78996e42dcbfc441d1994d3f79c63e195ab. 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/FR96X2516487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5603655e95a9637978c23f5db6194a684e9a30d7450c403fd09b735a72a9427. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/FRX202525926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ba4a74a27f761e4a316aabf51a412ffd006ae994613e3a735c006c82e368004. 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/QZNWU2578903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bee5fac0548cf2c1f86c0dcac0eed0fa778847aeb79ac10738ef1c0d4d5a1b6. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/FRX452565857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7c1b1c911d5ce14f65f17858d3463dc02c2612046342a024e61d2cc6b9ce599. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/FRX762575662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b61cc0b694a59f389375b729f9761b1dab48e21988067c1b5633a02bdeaea91. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:53:56Z), 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/QZZ7P2592111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38f1ac5649cdbf2af2d7b0b15a7236f0eb5d72df2365165d5c167f888628a252. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:59:52Z), 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/DGA062553439.