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 0x76f412de131d240d08336c7c06b0c690c9b424458220e9aa6f5f3380172ca48c. Chain 2 (Bitcoin): anchored in block 953707 (2026-06-14T23:22:21Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7d45df75-5eed-4a22-9122-84685fd15e0c.json and https://artists.proofprofile.net/proofs/artist/7d45df75-5eed-4a22-9122-84685fd15e0c.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 0x2d0a2f931dd1a9469ca0ab5b6030556d16563cfb5ebb5f79802ab0a297a60b1e. 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/HKG731751454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadd3333e56796deb6b423dc76b98359f3a81db157e42b50e5201471d8c281641. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/HKG732122049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d61e374c9bab8fe4dbe61dea08fab1e3c49f4690e401b08bcc69da44c0e7d26. 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/HKG732129394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07c2279fce173ef75b387ce56cbffc79560168a068f20ba906ea44b648b400fd. 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/HKG732128143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9ccf9f06f32d3476a3798491e234e4ecd369b7f04dd82ca45bad40b32fe4dbd. 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/HKG732127905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06ebf23a1b1b604358684c3d104257c138514f8dd19baf1e62e7cd8e0a110efa. 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/HKG732141664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda9c9c5761299d429d6a1094a492fcfdb7c3b6faae31ec373c6e75160f62a721. 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/HKG732114657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x446559e21642c7667c170facba12bc1f93251aabf12bb0be5414835f229fdfac. 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/HKG732106221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29e939ffbb9c5f71ed41448530d3ace5a4324ee4b23e21b09b9f75eeb9778727. 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/HKG732116867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3402c064d2a590b5376aaac273a0444f228c0d36a9a705f33197be46fbbbb6a3. 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/HKG732102544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aaed5ae77bc76c8e865fadc3e070d69aea2d84dfb9848e5ef10e2a098afb9c1. 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/HKG732100179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac5caa808f3184c4d64fa2e2c23232ce6ca9906d0be84fd2cd18f387ae58aaf5. 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/HKG732030034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb47fcccc64a20ef44975098ed6957e23211a4a9685cfc3f8ac3cf7bc543e756. 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/HKG732026718.