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 0xfeb2bb1eb3074ffb28d5c33c473b6b39f74a872a8e4223a2aacff5632a2c1e9d. 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/5f839a30-f02c-447c-98a3-3ce9d2bf1567.json and https://artists.proofprofile.net/proofs/artist/5f839a30-f02c-447c-98a3-3ce9d2bf1567.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 0xa6c3470a43c5acd3393c0d6fd4f76cc3b4c7db266dc796b7a26e5c83a869c989. 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/GBAYE1900831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb88f60dbc12a24df82b734f16a0362b33ca6a12866465f9613b7ed9834ddebc. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBAYE1900520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2ff25a5560938f9e991ecc55adc4c3215913489d3edc362fffc06a2013b0659. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBAYE1800700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e4131d6b1fbeffcf487bdb9458d78ec101fa1a14a05b90748298ca0d0ac145a. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/GBAYE1900212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e30a48f5dabf445d50bbf0043f9e06b607b7a4f98be702d56e5d2782e3bc73c. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBLFP1795998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x636e25a5fff6686f30cf9d63a0af4d3a1655a2052cbd32adee39dc1e55844664. 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/GX3Q92483518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0cfcc99996f22d21ff5fafe5005d0ee3d719e19e69972feb75c0f29915d3fb4. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GBLFP2413876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd78f5d4772df53735715de470bba0e7146879b9772e7ed4ee25163f5e35c628. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZNJX2398436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe340046dee8d7948ef3a94ac2beffdf0652600f5eeaac5c0d95ced4b2ff1b2fb. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZNJX2398437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc120a3594cf1ef71b607efc26c367eba686375eb8512eefe5b7b813030befe2d. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZGLM2341465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb49cc4330f1c3b14cc1900f0631fd06f4df270734123f7e133eb243d9e4093c. 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/QZW9L2238706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fa603627a289f277adb7c06aac65f361333d18717a72f58a6df98a62daa8054. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZW9L2209756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fa603627a289f277adb7c06aac65f361333d18717a72f58a6df98a62daa8054. 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/QZW9L2209756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x748220682fff38d8b0970f068a9599e00fd90407dbb5e3d26b6f68c6b827b7cf. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZTPX2254395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f2454a44f2cf1704b4571615865b3b3878fb6b0b0402cde84aa109634dcb76a. 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/QZTPX2254397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50979d6127f9946560225c37a2f304741d9d05fa005a4a5c535fb576d210d6bc. 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/QZHZ42201659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c60a5c20155df1994dfcce2fe543ae5e1bd4f0b64185505f315d3775fb5df4c. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GX53U2088847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd76654ca136c8e623b1cdd08ab05c30b59e855e82b6d5f827661df18386acb3f. 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/GBLFP2040634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x815c2166af1649674715a3c5b46cb6f1643e8586b51f0b9b63a1aab3c77599b0. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/GBLFP2040632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x815c2166af1649674715a3c5b46cb6f1643e8586b51f0b9b63a1aab3c77599b0. 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/GBLFP2040632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83b4d704f99b2b7bc82dc4b8e79fd1a2c257f2ea7d70b21257b94ce1fdd41ed1. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/GBLFP2047261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefa7b932b2feba7ca1ede99fca0e6fb23b357a241a988a2c91cbd7778124f3f0. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/GBMA22099324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ba9bb93a55de0ef8f290d2ef81bd771fbef6a0538054748dbd94dff84fe8aa7. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/GBMA22097451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb88f60dbc12a24df82b734f16a0362b33ca6a12866465f9613b7ed9834ddebc. 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/GBAYE1900520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e4131d6b1fbeffcf487bdb9458d78ec101fa1a14a05b90748298ca0d0ac145a. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBAYE1900212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2ff25a5560938f9e991ecc55adc4c3215913489d3edc362fffc06a2013b0659. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/GBAYE1800700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e30a48f5dabf445d50bbf0043f9e06b607b7a4f98be702d56e5d2782e3bc73c. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/GBLFP1795998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8e638c7818a7cfe2bc286c0919930929be7ffb3110c3fbf6be93717b1ad1cca. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBMA22376326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00151dde64d22e621379ac2af1b624429bd57c72599e18980e2739d0353f7895. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GX3Q92596661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63a78a5dd4b69df337358b0f5546454efac72b9ad9e08f8c58b2e1a15ec4b682. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GX3Q92596662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e9724b15c0a3ea4869e2a5b4c54683626fb4163a7e18d7b9cd066403f4bb7ee. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/UKXN22512158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34d3d944db57c22580e4352ef1734d079afc53136dc31735c4f269bb2eb7c226. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/UKXN22512159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd76654ca136c8e623b1cdd08ab05c30b59e855e82b6d5f827661df18386acb3f. 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/GBLFP2040634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x815c2166af1649674715a3c5b46cb6f1643e8586b51f0b9b63a1aab3c77599b0. 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/GBLFP2040632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83b4d704f99b2b7bc82dc4b8e79fd1a2c257f2ea7d70b21257b94ce1fdd41ed1. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/GBLFP2047261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefa7b932b2feba7ca1ede99fca0e6fb23b357a241a988a2c91cbd7778124f3f0. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBMA22099324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ba9bb93a55de0ef8f290d2ef81bd771fbef6a0538054748dbd94dff84fe8aa7. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/GBMA22097451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf93dedc18fe7731ef1c5f77adf27ce71fc078a206e57c218414a845c4e3f558. 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/GXHG92503383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x312631fb9bd959a6cabb122fbf47069ca375114d8918ad23e915077fc8b1c605. 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/GXH2J2504002.