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 0xef5489b7a17054fd7248bbe3a2f5ba071fd11aaa2698d8cb365e71ea88a53601. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ef0add2b-c0f0-41a2-bce1-e61df4c09a06.json and https://artists.proofprofile.net/proofs/artist/ef0add2b-c0f0-41a2-bce1-e61df4c09a06.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 0xc2c13df3d7cf3766060adcbc87a5b8b72d7c786993c8d2df27415bb394762ea3. 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/TR2181900001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba522f16927785ebb1841fc45c75ff5cc664f190d34e3bbe7eadf7d808d10e1e. 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/TR2181900002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c767dd549a844ceae89d17fb20e323eee3e356202cdbe5dc64e802bdaf752c2. 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/TR2181900003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c1105cdc7091dcf4f529203d89c7aae1fbbe5c9ba3f06decdb9496570a17a2b. 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/TR2181900004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b3810dec5a0c17fe53b6cb390c80160775aad8aa828095feb291a45450eb182. 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/TR2181900005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a2ca5ba63207b0d641254e1ec52ada43b23b05d4a128c46d22906afc5630e93. 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/TR2181900006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ca85b591be57818d71685ef91376d64257ee1836d62d45031d5f9a8ee263d7a. 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/TR2181900007.
Live at Pannonica (Live at Pannonica Jazz Club)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64f5b576c1cdad21316d12e9e193561239ddf90fc95d74a6b46f689c6625d690. 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/TR2181418401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4efa827955b3ff456c9422566fc245614833284b03cf6761e55020575d4e73f. 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/TR2181418402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fed1afd59724bfe1471e0dd5988b1d53de2f3c501eb8392b801f5e08345eaf0. 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/TR2181418403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7df6695ebf3524ad2100b7f72df9fbb4ab47c638592645552da4ab232f7f0083. 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/TR2181418405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46c6ad8096e47ce842456f4ef306a4dcc7e64d0732617c576899b16eb96cbe33. 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/TR2181418406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe88b5510fa063617b24ccb9f84fad43e06e9bbf3832a271490a2c48647a9a531. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/TR2181418407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e018fa89f7573230ba84bac9ac3a08f25b284a1a180f28edaf58b36acea15ac. 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/TR2181418408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8340fc1d69dc3c7702c8e03a6d0e1292effa48bd199094f858ff47827c1d6bda. Chain 2 (Bitcoin): anchored in block 960125 (2026-07-29T15:38:18Z), 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/TR2181418404.
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 0x07bcb8860013bae69576c0ff165973cd3c99bfc78844c0b6ebd1fa3267da66e7. 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/TR2181316106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ee065ace63f3b14b812f6477c1e78dc6bd59271ff310d915417b223874ace6f. 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/TR2181112203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32e608bebc5a3663557a192806bfee1f2bc2ad5bef3089535d431b0e6d1dd8c9. 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/TR2181112206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb360d7de45bced59a57e3171cc321ba89bb1b137504e38f6e1f78eb98d8ca1b0. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/TR2181112207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x195134f80134078cf495749624a0622c007bae5fec4495f2c4aeefbdea25a566. 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/TR2181112209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaa74a960f0e0ea48be45ab043640fb3cfbeb3f004079730f7b628de0f9861a1. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/TR2181112208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7d72901fd1e5583455873946744197789596e3cf915e931d01e25ac36b38131. 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/TR2181112202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc547065842b6a3b8c21b5cde8eaa087e6f623f4f7ff67f3dd9975233f077fdd. 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/TR2181112204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d4d6de2b2f14d91553caedcd7cad6d3bb4b5c480f88aa7e163806300923adfa. 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/TR2181112205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78a6235dcc3174464af62d674d7f5e212fc4dac9ddf6a5adaea73319aaa5bd7f. 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/TR2181112201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bb0bf08b0b2652731ebfcbae2a487c3427ace892104051cd9f3bdec0bed8d3d. 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/QZTB42334613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3411d49feebf052a60ee4e8f9828d4ee752591901bd14a2fd9a4168433cb5ea9. 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/QZNWS2381947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d0f51ee6c0b9ac7f78b01fd0f030c4b03dd3eaa2c38705e2a5825076cc975e6. 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/QZFYY2343703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda90b43b49d04f6e9c464674e09ab3238a416e76f709080bd648b5fddb66ee4d. 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/QZFYZ2300075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e67d10add2866a2bf03718d83e74e6c33650253702108aecd8c93fe4d1cb6f2. 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/QZHNA2205249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22bbbe192c0899da58b4f9592fa947a3d7d0d932a02c5cb35006f07fc22e1931. 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/QZES52272005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67cfbf01d8718a7f099c21a29dec66822f25bf18575865b580fa53fbf39c261a. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZES52268661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe381482decbd54160bed8d5ea432f98798fb0f1a003057172033921295925ec0. 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/TR2182010760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9152bb7d048475c10af23711d1c47f1113d0d9302d8f3a17dcd80c586e5caff. 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/TR2182010710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7741bf04c946c57123c36a262b6c559d52ea4ae5120ab78cdcefb7f5e953a2f2. 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/TR2182010720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8515f81d5845d23460a7d50c08aa70a547578b4247414b77c30fcd477e29dd80. 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/TR2182010730.