PZ may refer to: PZ, Pérez Zeledón, San José, Costa Rica (city) PZ Cussons, a manufacturer PZ Myers (born 1957), an evolutionary developmental biologist, professor and blogger Preity Zinta (born
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 0xd7faf06d9fdb86d96a1c7535cbf41e4afa51b8c1d053013dc739b74ee3c7b0a6. 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/1daf85d4-b524-4280-bfac-82e5f1dd5463.json and https://artists.proofprofile.net/proofs/artist/1daf85d4-b524-4280-bfac-82e5f1dd5463.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 0x9c071617622f113dc959abe687eec80de99d6858edfc646c0edfa5f134768b26. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/PTMD10403607.
Cara De Chewbacca (Live At Arda Music Hub)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb76f7d623d2bd59cd0653fee6957dca4ec2b070fb28a279d0c3bf8f86cf27c2c. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/PTMD10404809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e41c064369ff37306bb9ee043d6fe0b1f75a119a9ed28c4c2074489895798f0. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/PTMD10404801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9234a89699fbd9a7c500adade455ae007210f1468564dde0a58454025c58769e. 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/PTMD10404802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88e867714f419159dbc35bbc4ccd0166f64e994b97c9447bc8bc050dddba9d1f. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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/PTMD10404803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x235e2ff2fb6514f76a92a7b6ad899c7f0bc5d8ed2b33ef98fb6697c2f4c7845a. 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/PTMD10404804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbd93e94bcebb048c75fdbe65455c4116e377485978a06e4d8d2bad3b5527646. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/PTMD10404805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe170655e1697ce4403c8cdf60f34041a8b03a4f81631058f42adb13e1c16b8cb. 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/PTMD10404806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13cfb7ee37062c3ff3f0ac999ff33e656f67b76a53effaab776a4904aae17515. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), 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/PTMD10404807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe06d99544ea2661837b509e91b37557a57d07d01c6ce0d381fbba19cea27bb3. Chain 2 (Bitcoin): anchored in block 960389 (2026-07-31T10:20:10Z), 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/PTMD10404808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb76f7d623d2bd59cd0653fee6957dca4ec2b070fb28a279d0c3bf8f86cf27c2c. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/PTMD10404809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a4e4fc616efca9e3fc83e32cf1471b5d3350943cebfd57702dfc26872476a71. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/PTMD10404810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f8a600af730b8e058e00a1be125f496c7f0e1f3707bf4c8923c993cd09eaa2a. 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/PTMD10404811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f2572dcde7934c1d19624ccca54a845acd38cfbd216d4148a07ada5bee1251b. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/PTMD10404813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3a56304264d06ed839c315809e3b1033fd4efccbcb82b63fb771c876f78f1e4. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/PTMD10404814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd26bb2e691d212d467a827ebadaed4a84a78f889deb4b6e557b21457a9a49f8f. 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/PTMD10404816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8da5c05bc206dbb7b89d717c489b0b7e69e0fb16ad6d6b1df34c0e5d7f901c13. Chain 2 (Bitcoin): anchored in block 960463 (2026-07-31T20:42:35Z), 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/PTMD10404818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c4fb24a94f9a9b80799a855edf87da98444e8f6240b994ea3cdeb1a6199d53e. 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/PTMD10404820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0be81b79fa573bcc71b9aee3dcaf30c1f667395e4632d95323dd4f7d3c66df6f. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T13:14:05Z), 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/PTMD10404909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33bc0ebc9f5ff6fbb4acd4eceb0fcb2a6fd3838517e907c3b9d0e475753f9e65. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T05:45:43Z), 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/PTMD10404901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf05ed4295dc35c947347ad9c640605aab242f919508d859e616d61b93e213d50. 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/PTMD10404903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c3c9b88218917606f96c1a4ac4b97c01e58ef3c17404b803cce14cdcb0bed22. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/PTMD10404904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc60d4918b26327bb45e8b62a34f2bff0d257da62957eb7587ad14bd35a90d1a. 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/PTMD10404905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x064ee38bbc5c8c793d2e74987b724cad35631fa0fff1b7848f386f4cbb04fd47. 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/PTMD10404906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4e53164ed3feb27716fa61c8d448f1729eccf34d7a82120085ab0bca8de5b5b. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T10:05:23Z), 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/PTMD10404910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0be81b79fa573bcc71b9aee3dcaf30c1f667395e4632d95323dd4f7d3c66df6f. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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/PTMD10404909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82a65da9be3ee493829f201f18119db79944c7365a1107fc7f17d59a5c984ac2. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/PTMD10404911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1292df9684bf9d7fac868426b1ac5a23706626ad82850fe1c77b1a45c1a23efb. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/PTMD10404913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d01257b8d8725411fef98a70ccd3de19972142a9609e6b66b5ef01c1ffdd0c5. 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/PTMD10404914.