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 0xb52597b22fe62278493888e087c9192833eeb0bc23aa78804c2b3d041c2a008f. 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/faeb6686-1e01-4fdf-ad69-c65be2ac3ac9.json and https://artists.proofprofile.net/proofs/artist/faeb6686-1e01-4fdf-ad69-c65be2ac3ac9.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 0xb137da4b83cc9c9f75a912f71f5f906a9cf330776f25334a163dd952bff5ac79. 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/QZHZ62280002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee9d42fd05158761d07b8de39b7b03d8eab0e2765cd1182be706d67e6593a9f2. Chain 2 (Bitcoin): anchored in block 959065 (2026-07-22T00:39:32Z), 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/QZW9K2252156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59aeb6f4d49c958d76c2778e09b7a6e28ab769640a0d88af418984ce89f577bd. 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/QZW9K2252158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x159953e40a503f13117270bd794a27548aa9ea30ee22aaf42bfc8447277e2af2. Chain 2 (Bitcoin): anchored in block 958873 (2026-07-20T11:48:10Z), 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/QZGLS2376551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7076fe39663bcd45339ab69c24a549e5c29b52f9693a89bea8b5d12477fb8c12. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/QZNJY2312786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36befad5b50670ec85211f669f36af7adf3a9b0a4d74495ced6b0e74990ddfc5. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-21T21:46:16Z), 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/QZWFG2389336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cca5afd47a64a50fb93a2f1fe3a69ecdb5a3a73022306b092f587e3d5afbff3. 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/QZWFG2389339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed8ebc490f56ca46c934edce97efe88e91595bf8c621cacaf7db85f383d1b40a. 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/QZWFG2389342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b7fec0d0bb9689296edadfada65855871aebb015fec45c4cd4705830cefb60c. 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/QZWFG2389344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8179603d9a8ad89223f5be7f0fd4f7b32fe7469d8a9ae4504a55cbdf4f6d61d7. 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/QZWFG2389346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x535098fc5fe938903a52c4a9d87c50179eea5907f68e231a3333b1ce8f8d3a69. 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/QZWFG2389349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32554dac51b78b512690d68e35e1a98bfe8702ad3459f3f1d45a748838627c23. 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/QZNWR2411690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb629038b1ae59225d58448fcbdd634cacedbc88d0cc6f2dc33ae0d01fa33f311. 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/QZWFX2468890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda6f7c1a1d264a8931fe4792b3eb9d909db43788a2233df6359fd7fd9336396b. 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/QZZ7M2442277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2836a387429fde27be13825f78a4519724720f11ba91fbeb1ca244ccf1683767. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QZZ7U2403653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd55da68a9f59b4eb281495734395d385b2165be4b63bd3d3c2a4bc208be32413. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QZFZ42558595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc88679c81415e939ff96c0c6fabb3d4a0d8a6bc9adc48d47c45cca647b761399. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T22:00:52Z), 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/QZFZ42558596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a80569fd837aff48393eff969a002f34f61e283db1c5d1b53373947171e8165. 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/QZFZ42558597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x375e83e4198479ca66a400449ff798f94598e2fa15d407ad1c21a5f1afb2cdae. 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/QZFZ42558598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cc2df4df8773c64fa5bc4ba78188b92410f445842dd16452886de312e8a5271. 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/QZFZ42558599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x648a92919d2eeaaaccd4963b3f7466776c2b11b37fd9b456825cb49a8a1141b2. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/QZHNA2525809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb59760f79809e552fe1bbb62a33a20205383cd2288335e7293cfcd9188ccd949. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/QZWFK2506978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x686ea6cd6d5da1f8dae0a50e3076a3c85671f6e21fdfcd7a9bf7bf239a4911d7. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/QZWFK2506979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x692bd03e36ff4eee97df03a276739fb269d214ee97dd301d957d7fd2e2b35993. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QZWFK2506980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda6f7c1a1d264a8931fe4792b3eb9d909db43788a2233df6359fd7fd9336396b. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZZ7M2442277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec00b25932d13d198b0568e76c0895755d2d2d0eb1898c936d2b7de3b7ae8590. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/QZWFK2506981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde0b80d3267d42d2e14eb4546421e53954d4fda65b96443b6dbfe6cb63d27cfe. 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/QZWFK2506982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fc09f6ac6ada2cfb701e14a900190ac54eef9aede6401a5c52c72d57d6d490a. Chain 2 (Bitcoin): anchored in block 959110 (2026-07-22T10:21:47Z), 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/QZWFK2506983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x234702a6813c9033132042d34c0f2c9190a1bee0969b438b8ddbc0f2346a19a0. 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/QZWFK2506984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefdc06b416cde912cffa11676c0be9153176932a1897ddf76aaeceabe5c793f2. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/QZWFK2506985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62aa4f7561a2649a545c6b65f5bca64db0af3ebf47f735ce5c5fa6ff81454ab2. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZWFK2506986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbaaa7bde6d0b82cc351b8ea90969afb0aa436ce9e2678704b638454302c48d3. 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/QZWFK2506988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58efa44725715a05af1373b70ca5ad7735d74861b58421ba3306fad753ca27e7. 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/QZTRX2220862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58efa44725715a05af1373b70ca5ad7735d74861b58421ba3306fad753ca27e7. 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/QZTRX2220862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75368ffe9f869be83db2ab309d5fd7fe23792c20df735cda1ef3a80015f89b03. 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/QZTB82370066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d76b5773cb2b92284c86374f28e186691b54c21dac1da0354f7cb237502842b. 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/QZW9K2298729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb488fe7a4ce26b0060c7f65019485f8871350c0336770604e205ec9347ebea5a. Chain 2 (Bitcoin): anchored in block 958042 (2026-07-14T18:24:07Z), 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/CAHQJ2546821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a60f7cfbc37615afcd85eda64d0dd49d1d3ffe5c8b8cb1b4229f0d57ff18ba2. 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/QZWDE2433616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a1e586652ad882f7fa33ea28ffadb497fc6a83f518d60b66ffa1b53593a7d6b. 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/QZZEC2406261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9daf5873b25b3675fc6e5a90af16e6df998e528d7a710a33ec5d9590f53c147d. 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/QZZ8B2412643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1056ebcde898dcef9d9bd52687313de970664fa8efdf854c1f42edcdb517745d. 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/QZZ8B2412650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67a79b08cfcba46667ccd627f2440827d2b90610ce2a1b8b8472d106d281964e. 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/QZDA82478904.