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 0x6a7cf365de977ba8089bd75d9651ed8d5cb26e030ba4217ef771fc3fd8e84ca8. 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/563560f9-a1f0-4c73-9d49-ed27979b2192.json and https://artists.proofprofile.net/proofs/artist/563560f9-a1f0-4c73-9d49-ed27979b2192.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 0x7264a575c8b9ce340da80e44023cf946435fd18a2d45db906cac3f9940caba9a. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/CZA090807703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2847874ab9591ef230d08cfddb7034d3e9f9eebb9f48adb52aac88055f846596. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T18:02:07Z), 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/CZA090807707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x816ebfd882d85c9e900d160a5ee15e6221c150353ea300d5bdb76f2b0796454b. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/CZA090807711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x868e8907226e268200a6b97dfaa9964176d705dc0c9314d711db6a6313114029. Chain 2 (Bitcoin): anchored in block 958554 (2026-07-18T13:17:01Z), 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/CZA090807712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41129525fe9d09a67a6fb148949cc1e6e0409398b8022ad5e8d8e168bc159332. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/CZA090807713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0488acc2e956db7ae9eb4d0189e3e727d7f127d080a7a07f2a4add075220d3da. 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/CZA090807714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8760cc7a78f6bd0980dbd56890468b0c7556d602242d7d7c905baba1e873e944. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T01:03:41Z), 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/CZA090807715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35ad7a837e476b6770c7bde828a7b4d07fc6715b5b4417c7971e7dfe26587889. 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/CZA091109703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62ee9e63386360db629e6864f4070d0f96df9c98377323a5ce2b298d80a2860b. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/CZA091109704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99c78829d15dc44f0ac21d6f2a88b589b5ed821e8b1286ae51328fa2e5eb0fe1. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/CZA091109708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4af9167f15164e6048297ff7e6c8d330a9004383bef234b9b37656dfcffe5c1. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/CZM261500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf68850b7066f74938bbc3000f4ce52cad74bb6637eb61df745be6f08beecbd81. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/CZM261500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc98adf380566e219afc28f496f65501d9aead0fde4f8cd3a14fbdb6fbee6a834. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/CZM261500005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f96d3b7f50f6942f412eff3d60fb5cf3d159791c51130ee46928d5a7ea957e5. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/CZM261500006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccf97bbad2230e757dee59153446e4b46634399c1eb75dfe8786e09a4adc9ef2. 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/CZM261500008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cc680f047c3fdda356601f624d1b7383b7fecae264fa1799c4ce312a7c2a85b. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/CZM261500009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbff1d19abe9714fc057619e7aa7090eb0195e1f3777bf28981387eb0b8082070. 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/CZM261500010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0568bd11b7563f446c1f744cbcffb13bb88dbd5ab34a21a81de2ed44fedea39. 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/CZM261500011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc812a38c0bc135054afd2185bb82149235b554e18f51d7330a9e73332b2a1a2a. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/CZM261900001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb07be6b8882789c7660d4744806ba35c7ca3a8fea760bcf70fa4bf59fed4179. 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/CZM261900005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1d708a8311b5c19284d8111b4c5ed97bab8d05e02ffe15efaaa2c55c12fff85. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:31:40Z), 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/CZM261900008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf687a2587929002662b1cb62bb3c6b79c9a4f6ad3df08d2c4c5cb085712472a9. 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/CZM261900012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x037da68c36c8175094b7927eec4d29344b359b8f3c6cd52c41b9e07321e1a3bf. 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/CZM262100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe998f873404bad51de54ba8fdb07be3377d9d8976bfb0383ec5d428b02840840. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/CZM262100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d98c903329d56ecd209e7b4823933c3434485097a564bf50f14fffa85e44f9c. Chain 2 (Bitcoin): anchored in block 957744 (2026-07-12T19:15:44Z), 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/CZM262100007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x486f7070f90fec3e3977193bf1de12b3b63834fe61a576df11d90ff368725eca. 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/CZM262100010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e68b7feb5b51bbbfe2a186a2f9cb77a4746fb6bc684d2da202f9570dbfb45ca. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:33:05Z), 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/CZM262100011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee042b8d262c2f00f3ac14b82c7ab01c839d9ee7524e4e6b479af5976d4bcc6e. 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/CZM262100012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41f21a0089b1c21a4fc5110c45e495c2e70afdeebc6e42860535c557013d7c09. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/CZM262100014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x873289cd7331317ecc36ec3b2fce1cfa91d1701e3ea27cfa08cfab09ab81abae. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T21:29:16Z), 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/CZM262500003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad9efe258e0e972a5576886b3b429dea8708a6470b5401c7a109c8681b8b6ce7. 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/CZM262500005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bf18c69f8194ab37b877c0d455fadbb2f351a881e9ca27f57d013a05a2bb109. 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/CZM262500009.