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 0x193dc44935bd4ad9e6f2c2f5009dd568af5f7b758c79ba518235171a90c5309d. 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/7d873f50-a78a-425b-8515-8581475507c9.json and https://artists.proofprofile.net/proofs/artist/7d873f50-a78a-425b-8515-8581475507c9.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 0xd7299fe05dfd54e98dcdd740acd168b416ebed9b206256a2f0deb25f902c0dc8. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T02:55:13Z), 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/QZK6Q2141373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb185fcbcb194d42357fb1080c37dc5eb64cea3c2503ec863fdd36e36e12ced0d. Chain 2 (Bitcoin): anchored in block 956425 (2026-07-17T08:53:31Z), 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/QZNWU2182815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfe9a94907e6ee70b0a68bc12e96df72bb63f358deb88ae06f82ce9d80809ce3. 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/QZHNB2247630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x412d92d125b5ae027df889c8fb56ce797251b7aac6c193edec47b9352f0d164e. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T00:41:43Z), 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/QZK6L2268305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4ffabc54025a3ce49a919312b76ea4cf3cf013cfff65f55a0f2cc59634ed63b. 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/QZK6F2251773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfe9a94907e6ee70b0a68bc12e96df72bb63f358deb88ae06f82ce9d80809ce3. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/QZHNB2247630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50d398cbcf1216ca1a5a841ae4c94b64a95e86f4f83dbd0e27881f58c4c7cfba. 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/QZK6F2251775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x455d08d7cc442cbc5fcbb13b96fdc0ad18e5cbc16ed3a21b2a4025e1cdea6aba. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZK6F2251776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x412d92d125b5ae027df889c8fb56ce797251b7aac6c193edec47b9352f0d164e. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/QZK6L2268305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x370bc33c9bdeb23c1d82022046e04c44c411dcbd62d415453046061131b121da. 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/QZK6F2251778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x748385aea7dcbe817ed3112a23ab73c997593844826a959acf6d125a9739d9b7. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T23:49:28Z), 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/QZTAX2229940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x046a080def9a635e3099786bc543cba5be1547f164e8a55e1c5c6f72d1d221a8. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZFZ22396306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7ddfe5d9e7cf7589679973fe0ac00a6c20e30569195721b45688522ca7380d8. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/QZFZ22396307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8d9649ba86968b84ec606a1f01545a4fa3c5059a33d7f83efb113f6c0bb6c43. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:52:02Z), 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/QZMER2346283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08ad8ec21baf3732fd967f443753405d2b14478eacb291082b357adbc582fca5. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:15:34Z), 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/USDXS2303939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8247a0701592b0449e9d3fa288fcef98e1e1ef52983ad7cf6eaeb9297c3c811d. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/USDXS2400010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x782702423caf21cb0f6d336801b1f0dc66b948798c59ebef702642190bc87a81. 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/QZNWY2375666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5054ca8622b4ca602ba110eb85c1456c4e06c1af4d0719c5a43f259243435732. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/QZTBE2420634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6689066c9ea5058fe2dabda1d59cce2fec5877ab6f76ec6942855ab8f30f8c9. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZWFX2409261.