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 0x5fcffe861ac1eb5ae2b1d9b933b6192d35ce168506cd80613783d0cfa927f4be. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bbb01831-a7d0-490f-8292-2cd0d0b0fa15.json and https://artists.proofprofile.net/proofs/artist/bbb01831-a7d0-490f-8292-2cd0d0b0fa15.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 0xf0badb35a16066cceedc26df2c01302fd1ff6224ca9af66d00c47d6431d84f86. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/CAHQJ2356563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46ba3682764a71f294132c9a774a60b3537592114fcd03fcc0353820f0ac44b7. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:28:20Z), 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/CAHQJ2362578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dbcf9ff916b687e1ef863dc7fb84a2ec7955897bead15a132ae7e86ff5eaaaa. 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/CAENV2299111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb73409d4025ae44fa930af085b0283b2b555f607cc82cf0338bad214f7ae7ac. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/CAHQJ2340574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa95e0ae720901c9e6c8775ccec8509f7879d00f36fd452777757598df1d9db30. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QM4TW2452437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94e6030e2c325f2a6e0baa923825fd63924e20e4f7f72df7d4f4e8fe396f2165. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/QM4TW2452433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e115ff5695c115321b5a7a1183b9c28025798d7458ec24c6de5b5076e76a32e. 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/QM4TW2452432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24cc0632fa9c837691ee3e8e7d937422ced2d07ee85c3dbc81c1959d9e4b9e58. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/QM4TW2452435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc46f451ed21c5680dff9a4a0445fa5afa808873ddb763f28e0c04177452ac0f. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/QM6MZ2408527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80a4528f0516d1b7af89eb1eb9044e4a58e698bbe37a533cc722aa5d29497f0e. Chain 2 (Bitcoin): anchored in block 958611 (2026-07-18T21:24:44Z), 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/QMBZ92461361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x776947e144552962bd7da0cef7928e5ad4e0588884b165da8d51e309b2fc49dd. 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/QMBZ92461389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54a018f41d49b1d2f79f62282976414954c83ac29bd5de51a5f92e0129e245f6. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QMBZ92461434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcca285f918469416b6a133a67dd65dc3ae9836ddea4cc131c09ab17652416bd4. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/QMBZ92461452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x805ff977f051b46b8f0074282acbaf80fe464c99210792b18f394bde365aea54. 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/QMBZ92461511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ecb7ab11e51d0d07fd1cccc88e82866f9160242dd45af5108c58c648bd6b87f. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QMBZ92461592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5a1ae1a21978afb4a71c2c2ce280d81aa803d7c333ee78fda34f865f7e83242. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/QMBZ92461671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbe02c928ae4aebbf7e627ce242e3ba5a57052eb38dcfa3b975d63b960544017. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/QMBZ92461722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b1d909385735fac72a615e5a20bc7cf0f807dbd5c2baf1fabd3e00b6551c0b8. 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/QMBZ92461795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd1a732e2f0d5ef050354d7dbcc3d3e0af4b5b7fcaa580fe235bfa44974e3397. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/QMBZ92461846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bb23c7257ce078e2c13e276fd397013969f0642da8bb38655e68302819dd285. 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/QMBZ92461926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbae661dcd6cec90cdd4af2583239273e4601e4e4529a384423a9b86329524e24. 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/QMBZ92461994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20f56a77b9d5b10932a91c60f8e7f0de546280812a3e9a5803f6c9fb08b8a88d. 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/QMBZ92462031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9deef018f61d25430e90423209bc3ea30a14c1cc64b5661fbb4e38dcf21e461f. 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/QMBZ92462075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e71ac384d60e3b8d43d7bf5504928da12b9fc07672d465840305cca00562a03. 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/QMBZ92462139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf1eb2098f7b2fa31788432647f974c4e51dda98cb57a2dbced818b36d0ab413. 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/QMFME2420531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x008708d3e90711e6835bfc3c30777a3dc5a17d4302ef941c6f44446e8663e45e. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:48:44Z), 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/QM4TW2547509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1c07e7546e38d3330a4901068a13d9ae1cbd739136a505c04aa3fccdc0371b6. Chain 2 (Bitcoin): anchored in block 958083 (2026-07-15T01:50:31Z), 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/QM6MZ2533979.