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 0x9b4472a7321e751dda603995c992da00ef9414746ee2634182eb702dc0846cd7. 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/70956a06-987c-4674-b906-b4de9379c2cf.json and https://artists.proofprofile.net/proofs/artist/70956a06-987c-4674-b906-b4de9379c2cf.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 0x899123c7ac3e9e3fe63153ba1a944b82d0f9fbdf725d407dfd0cec7050b32f7b. 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/QZHNA2276992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5890d2756716dfb9c545c56ff0fc5eade9ba03faa7f43f7672572fca7fbad80. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZW9M2206087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0839ffba13b9f11bdc9d00790534f79785aa7e69f4299c40f3ad845b55a3e8d. 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/QZW9K2372452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfb9b0f8a894a61711dd9562e04e7bd88ff4021b316340f5f3bd75944b4657c9. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZW9K2372453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa040dfd2cc8c271dc7589c9a1d736f87b345c0ba98cc7d8bc269725fbf1fa746. 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/QZW9K2372454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabf8fc07ddfb6158c0a2f594b2c6c60b44743c0b40093de2142a621c62afdcbc. 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/QZW9K2372457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x975dbc983daf5ec2b9d0ee7a667003fbe7332c458d0a256a5564e4e10ffb4dd6. 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/QZ5AB2442491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc54993a05183269b1f4c1661c62993f44b85a04be35ca9898b5c4962e860f24. 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/QZK6P2403782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bc052aa70c365ae76816fc39948db24c7d2c0784f2c2c9db214c33f2e5610a7. 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/QZNJW2492609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0d75bd9328b3b509c9b82d80f6a31e02841fd79ddad37a6c1d4384ec72cd8ff. 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/QZNJW2450305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22e74716c5866aaea933018ae3bbb800ff5438b745e53cf4a0a354647e2a1630. 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/QZNJW2492610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb0ce50771fdb20c3a2246930fbb66af99ffacb54403ccccb11fdcc67d4b417c. 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/QZNJW2492611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x817149b66c7a10511702f94c3e523366e6662db107305b26f656b5dbf71143db. 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/QZNJW2492612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20eae6f0b2ddb6dddf8759cc0aa07d532fdc0f3a5fcff15d5cca2fcc316e7d10. 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/QZNJW2492613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x189cb756c722a9bbb137cb3bb4a54b4e987dbea67d7ff8c406e22f6f082f5370. 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/QZNJW2492614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7de5785a06706f9042744d888b964ac22715c7d56706776db2edd0489164a5c9. 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/QZNJW2492615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d760530120687c1d85c3fd25786071bfedd1322afd8945b9766d59f95764b7d. 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/QZNJW2492617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ea74e092dac5c7a5dc793f6edc67a1519e5dcc82d957bb02f1c7767c2ebcaf0. 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/QZNJW2492618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc54993a05183269b1f4c1661c62993f44b85a04be35ca9898b5c4962e860f24. 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/QZK6P2403782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedbaefb376fd5e9624e2749bb5f586faeb9973061458727892286b3d9204c23a. 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/QZTVM2479447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd516d2f7760fba2a7bab49cf379872fabb7f529cd87cff2a77691c23e4d1678. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/QZNJV2517559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb72ca5acc7be6c72e83c6e3d278f093ef96ac921a7ad3d45224f525c46ebb424. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/QZNJY2566492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50c9af8d3de9db938e210e1e872a7c81508fd33661716a5b6d5eec5912c7cc3d. 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/QZTV32406922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46a52870a485f274a590f92ed9a708d70a3197df3a24f2a8bd480fcbd429dbe4. 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/FRX282312057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x503772f49faebdf99b348505932d2c9a66f16817e01ba307806fdd54f65f3524. 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/QM4TW2436352.