thumb|right|Pellizzer (in foreground, second from left, with a guitar) performing as part of the band Magic! in 2014 Mark Pellizzer (born June 14, 1980), better known by his stage name Mark Pelli, is
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6b016170850c791deeac71a6cdc9c86a710c30ebc79ecbe64c54392bf218fcb. Chain 2 (Bitcoin): anchored in block 953626 (2026-06-14T11:41:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2e992fcb-4dd5-487b-aaa1-9fb00c0381db.json and https://artists.proofprofile.net/proofs/artist/2e992fcb-4dd5-487b-aaa1-9fb00c0381db.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29a58418724c628ad480f6971434e58444649943423ee08bb7f9fdea1e6bcba3. 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/TWA472209008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30acd3bc757191b3cc366cc6a7c091cbc23f9f260146ebf0001ee0233817a745. 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/CNZ632100863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x774d300d5b3a09fe99fdf83d1cf9c65d1e9ab36fddafc57422e993170589469c. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/CNZ632000228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b2528f5d86c78ca0150ab1059fa6f4551ca142a0ee081ff6fbb936f9bde50be. Chain 2 (Bitcoin): anchored in block 960153 (2026-07-29T21:57:12Z), 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/CNZ632000254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x194fd9a559a85f1353dc66c2dca51bf07204cbdc14c7caa308c4728b74a8553c. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/QM6P42055515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d16b8044d065f65815f67e3908074fd091e4fb199ff248725dfa9e1c6a8c500. 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/QM6MZ2095146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x557bcb06ab4440e957f26b3839f4f34d8f597a60614305c1d1b05157df5c3ded. 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/QM6MZ2095147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4f79f8fc7f7471a5dd678d3f771a99aa7e5b2ed4c500845733686a4d94c7cbb. 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/GBKPL1942137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a3ed946fe1bf65d51ce14e2dadf45b15bf67083aadde2bc31839383ebfddfaf. 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/GBKPL1818016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29a58418724c628ad480f6971434e58444649943423ee08bb7f9fdea1e6bcba3. 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/TWA472209008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cdc587d769371d8fa45d600d8fe2819d2759c2fcdfb4548ed27784417424dc9. 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/TWA472209003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2eabdc25a97094dd08f556480a9219780c7ab41fa8035d8e568fe5301b6304db. 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/TWA472209002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3378ae31ed95efc7582d88c769b7cb8ad822a8c7f8476267d6d90d055403862. 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/TWA472209004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b72ec43ecaef0531f342aaed2ebf64bedef6e29973f19e41ae3b879b3cb6b19. 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/TWA472209005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0daf72a24664de468a7c361190dae553d5061ec1e4088d271020a9a5c6c5a0c5. 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/TWA472209006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd603c4667408fea00aa66ee74a35c85a977e4ffbd6855082b8c5697f5dc29420. 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/TWA472209007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f4915cd48d45b69e4a27808926520cb6d7e39be61b4aa70594d290b8f843d56. 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/TWA472209001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ab813e325e6c95ea66b409687da641a31e9358e8bd79d44688041610eeab8de. 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/TWA472209009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e9c2e92ee0731db9076b4a17801cae3372822f29e550cd6252c9b0cb675a2fe. 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/TWA472209010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed2b79fbfb44e86d42748d75f009263ba8f9c810b51654fa9423d497a70a7129. 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/TWA472209011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x748780543745b910df6af958ba233f778645d6505c46834dfb8ace20507de7fd. 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/TWA472209012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3049d05457bba7bef734395e4d354b060d0aa1ddec43ed8605263be91c1cffb2. 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/TWA472209013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x728627593bd3023334f088be38e700290832969b711f363c10b9841c852755bb. 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/TWA472209014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35a74f41c5d2c98f4c5d86abe6d2d865ff56e3e2f86bc6608f91e7d3fda0824b. 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/QZES62213023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17f2e455535c9fca1ee5670f4ff64fbd98b8a0f6b4bdcf168e8f43f1a8d92d51. 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/USA2P1821724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5686c72a3ffb8fe827b016e63b85dee5828c7cf720c1c883250b015fa537b2e8. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/CBAC72200004.