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 0x30e57450d357727ae6a4077cdf737d3b68649f3924f69bddb2b678daea88962d. 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/b75802f7-17d7-41c0-943b-955b00f5138e.json and https://artists.proofprofile.net/proofs/artist/b75802f7-17d7-41c0-943b-955b00f5138e.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 0x62d55ecc3e8fdf316e856719b7cbf3014518ec49e4bc1945b091f78d29b29240. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/FRX282129812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10246af3538bc72ea4dc7cfdd0328e7740b6423e7b39540d11f7dadcdceb9d53. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/FRX282129815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c44a53ede4b89cf09462379451315c32f99348b8d9305baf75f936b8ac43894. 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/FRX282129816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a3a39a2aedb612c51cc4813d2833b74072420eb1811240a640b3e6e468814ac. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FRR642301305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x681db1c056a3fcb511687e4b0f2f2e732a5aeda2fdd573b95ad0861c96bade6c. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FRR642301306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45ab07a381ba9813d489d12eca6bfe7bebe2f77e1f2b263319f6fbe0b4f762d6. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FRR642300819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7643912bfe19d6db1519cebafb2281d87b29c2326ffee745dbd6a84bb3138200. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FRR642301307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11c3fb59bc804dd3c38d04fe58e36c6e2050f29a09a5e228dbc4cc60e10d566d. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/FRR642301091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb52cfc303dbcf473d420e3fd93337b5774af7029e0c9c54c941a908d7a3c147e. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FRR642301309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3249a46bc85d52765f687a2edfe5d667d5cf561311c0971f2ac905ada3eb2869. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FRR642301312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa62b7e4a1e42f11f4322ae870b7895ad55ae0270111d2dbeb5938ea935c7522. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FRR642400026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87a1478c3847fa4c1085824a6cda76fc1fa58a5824eea2680753f713a683efa3. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/FRR642400027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9a8c8ae13c57051e37f9da9eed81ae283d052ffe7edf2e79566200438732fc8. 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/FRR642400029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ccc64730db2e34fb3dc9464cedd7a9cfb4ef73890cd53bf28a601c83f375557. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/FRR642400030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0f2cf69560169a96bcdd14b7d7761b02a8fabe699f2305826b4f804de0d324b. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/FRR642302284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94b647a34db30e9b29090b28580ef5f87375d53a281c11fabf88c62232ba6285. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FRR642400032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x322f3e5f54c68fef3b0fa6b3f5a93ceb1558ee8acbae1f45b7c0e72662bd2a7d. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/TCAJH2595034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce12c2ee96c8f588d7d06d0bcbd971acab6a6f261b9e186b2fdf2ece211ab59b. 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/TCAJM2503941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b14b76b7d6df2d331b8f98fccba21bf710fa34824d25095317dbde1ca710d65. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/TCAJM2503987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fbc04eb0ac8fef1ec9adaf3aa8b854ad79595117a264a3360f1f35ad2550bc7. Chain 2 (Bitcoin): anchored in block 958325 (2026-07-16T23:52:52Z), 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/TCAJM2504058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x322f3e5f54c68fef3b0fa6b3f5a93ceb1558ee8acbae1f45b7c0e72662bd2a7d. 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/TCAJH2595034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe88f76f1586cf1e864fe8fc60c835cf5656ea3ebfeb55073548e8d184920c01a. Chain 2 (Bitcoin): anchored in block 957780 (2026-07-13T00:36:44Z), 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/TCAJM2504175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ad30cef446b1f3e26861ebfd03fbdd02fff673575d680d0460795ffc7b59ac8. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/TCAJN2504211.