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 0x834e4e47bf3c1cb23b53f19b2949860f2ce040829bc430f058263094c037c94d. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d09ea263-a615-4de5-a04a-e879f0b647ea.json and https://artists.proofprofile.net/proofs/artist/d09ea263-a615-4de5-a04a-e879f0b647ea.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 0x77353b77ef3b4c28863847dbcf91c2f438facdb7557705d66f81fb63af71ef1a. 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/PLM402209006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab0554106f10712fb9e8f2d09c93681cd1df7ea134a3e8e39b2789bdbd7709b2. 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/PLM402209001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaefa9ea860790daf94f98a6a59d1c5adaa84d056507f13924a6078f54f317685. 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/PLM402209007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb036dd50d12207bb68a2ab8076ef6177a2d389fbac497f24f1f62b6cd508018. 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/PLM402209008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0e185e9b66e99d01e5a6914def8333cded680d08d6ba4225aa4761c57214584. 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/PLM402209009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x517dff55ae83a57c899c4966349e5bb8fe02f4333494879a1bb67c3a139536a4. 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/PLM402209003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7a7230e97ea02f6c1efa44188aaa81ad4ddd9501f98df415bb2e1f69da9cb66. 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/PLM402209002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fbdd65f62faf852c102be54ad5d87d15b63947d98d5c55e3a2b0099adbb4cc6. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T09:55:59Z), 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/PLM402209010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bd4ce7309ecc8dca37e1e746f5341e4704e37648d98858b28147742c568f9e2. 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/PLM402209004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1480d2f80a769b805ef5187afc3b8db956241f2ec2922718f2269015f67f0285. 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/PLM402209012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7437f748d153d8c829661220eaf82b496d55dff7f4f0d79692b949ab7d440d5e. 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/PLM402209013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x181a3fa1b92157c8371933298264104abb391d18a6f84fa9e0a31eb6762a724a. 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/PLM402209014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb63f9986ca712c2f1cbaea91ce0cf506af81546a53f5adfe54ad4b15dc5c6452. 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/PLM402209015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14b0edcb0367123b54ba23bb9915530cd8d8c8afa001a2963c994f65b4459b41. 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/PLM402309008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc55372e8c167dc15c217e3bb782ece0bbd7ab10b0e8f198625bc31cd4ae80ad. 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/PLS711800291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3afe7109c3289ab1380c3e91889e643eb9f1b08a69fb0b85372d964496d6b67b. 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/PLS711800292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54ba985332c2cf2d5eea0597cc02bcb8fd7087805f78b33a4bad0c19d3014472. 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/PLS711800299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65c375f9d598844f890f4204d6c6cecfa2300e4ab7fcf5dcce0e97670fc1f7bf. 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/PLS711900503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d621ac4d506553b252c0ac8b159880c12030961f553529e6f0e29f7864eb29b. 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/PLC062502492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x605b771664e2d1b8775275f0e298de07a29f9700b82d1c025671a0cb1642e110. 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/PLC062118475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x256d2b388801aa685fe693bdee9084cd08e49e01a9304844d82b973cf7149cfc. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/PLS711600025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x225eeb5ac30ac352b8c8cde1a85421bd56fa6eed8740e6298deec750c478abc1. 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/PLC062515038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa30d383eaf6dbab0495fc61ff55b43ce63a2279bce841aced28ac29158aadb5. 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/PLR862300265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x965617e2d1808bce648fca354d3b7425301202668a1c54ec31cbcfd3e8fa7bd9. 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/PLR862300382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1bc49ddfcd5d5c110e9a9a65f7dc43a4abc8b196989a3b12babeb6886d971d5. 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/PLR862200792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfbb92342caba8a2c1912b8d862f4fa6ebb4092337b85b1c495e09a30f735f22. 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/PLR862300156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5424dd54742ecd38edf3a52f75dcab7e3ec8b2508f84647437da516ceaf8252c. 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/PLC062011722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa511aaab48f3d3afe68ea4a43f0409304e9b99e83ada5e01b63265a343c66754. 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/PLC062011723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9956ae70ffa651d80cd0506a6d92dfb2f6c4c52fb620c876ddd2abccbbb80b92. 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/PLC062011727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9956ae70ffa651d80cd0506a6d92dfb2f6c4c52fb620c876ddd2abccbbb80b92. 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/PLC062011727.