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 0xe034c20585cc96a590233f369193387b7281c03684e4709987c38adf67f29b93. Chain 2 (Bitcoin): anchored in block 953626 (2026-06-14T11:41:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2eb1686a-86ef-4f10-977a-bf669bfbae83.json and https://artists.proofprofile.net/proofs/artist/2eb1686a-86ef-4f10-977a-bf669bfbae83.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 0x491125c3558d52e9829775cff46d30c887a051a5e947c91781f9a3f3d973bd57. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/JPW462419886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0720d6e06bbb1c0916d409a617fc0591f31d743bac9c73c2ec0611ca7d7ddf9. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/JPW462419887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11a9f872263536b6af1213e1bb8d4a5f26653ea69de60e04d1328122f9c33580. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/JPW462419888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50555f4de4b1ae14d6d2dcf2b9adb95c48d9649a798596e6e0cd53d5619bea18. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/JPW462419889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x381c6c6c0229efb97ee0116e224190bc960f06bda65a0cb8ecf7e4fe742e3f6b. 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/JPW462419890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x365c633df531851a9ad49fa6eb6fab1b78e75cd73ead611f6242a3b8c6552b47. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/JPW462419891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdee68bdf0212bd80d32dc73cfea8bea976491d3f9e4d9595a1027a9b4b629891. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/JPW462419892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0073ff27b6023fad2f24d3c544e7c509dfc29e44c98ecb764bd4d1cf99709eb6. 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/JPW462419893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42e07fe404b0ca836d1a6d713c200329cb5e3c66a0055fee309870c6ede93a53. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/JPW462419894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc228ee912b7a634daef127775de7cbe9c318df9ef815011403db105a029430d4. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/JPW462419895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0aed1e3a564ddfd48f7e2c5cb1817c474560ed94ea6508609714a4366cfbbb6. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/JPW462424585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc796d87b42f26bb10daa6b1c66fc2530f71bd2236550d40f18d60e3b9338272e. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), 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/JPW462424586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fa23b9c7ef97913d19aa64af8e6c638c3416182fcf832d7471d68aabe2e7b34. 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/JPW462424587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcca948e691b5e338eea0aa175d13a8d2e25e74af5126bf6264046bdd7be6db08. Chain 2 (Bitcoin): anchored in block 956620 (2026-07-04T07:11:13Z), 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/JPW462424588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cf30f38c449e52681867e47f3df73e41f967a7245f8662559df5616ff29d841. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/JPW462424589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8a117bb40bc72cca140a73582ba38cdb5b57772b7bd10a9f81da73fbbd20c6a. Chain 2 (Bitcoin): anchored in block 956713 (2026-07-04T23:03:25Z), 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/JPW462424590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x646377f76e76067ce8c00384c136ca39406994b4107c3482c5694c848690fa6d. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/JPW462424591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eac28d32c2fc870f14fd3fcbb57cd92647b1f441e16acb4f8776a1cf215e9c0. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/JPW462424592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f5110fb604108c79c18e3ad9d9f519b375bed6730b261b51807884cd37abeaf. 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/JPW462424593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x667c24a4d08ad6c8f963708caa0105311d781e875de9cbf9cf14dc5fd3f9b011. Chain 2 (Bitcoin): anchored in block 958514 (2026-07-18T06:54:37Z), 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/JPW462424594.