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 0x513141689c4a066c865157aa3298a0789e7edf97c07f69a069e3df5d5b1d3910. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d59652a7-71cf-437e-a6ac-129da1085304.json and https://artists.proofprofile.net/proofs/artist/d59652a7-71cf-437e-a6ac-129da1085304.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 0x603501bc0eb9c51d1cddfc2340705b00e5396f93502422eca773449bc2a80e0e. 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/PLC062114576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36cb1dc12448ae47ea75c873563c506f4a20ff2a68731af72b5d6e1248c33003. 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/PLC062114572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca7a9bb07e7896c3e36b741dfecaf0d4d04221d0f17067893dd21bfd269bfa95. 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/PLC062114602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b707716a4ceec17d774cd22101a9096b740863b5c711566776fc04b6c4fa8b7. 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/PLF242210385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7dff52b189346c77a596524d92c54014158ee8fa70eeaef8d307dc807597b3f. 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/PLL371400186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x680b53bfa3a0280f2ed3d8e7a671a616d935f99de9fdf3d8c21b17ca22db00aa. 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/PLL371400187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1509be263fa6e80cefdf9190f7d18d67541410f84d5864928b5161ed3f1a7574. 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/PLL371400188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7dcf7f3e1d0f8a000facad882e5183a03c0c0f199fe0d041f44182ec756a804. 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/PLL371400191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7adbcf59fb7646bc6849c7378ae619e4e2a4962ce2aaba6a6d7d22d8d0dd792b. 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/PLL371400192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d98cdec228e7dc5d0035aec86dc1e58711cc83b74be0c49204843b84fc5a59e. 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/PLL371400193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40e3408eac3e75e12e49eac444009f7acf335e797433afc290da223000589cc9. 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/PLL371400194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0125e44f3c134e54a0c8a85bf4bda799ec0fa1f13f3e80376c1528a48031ebdf. 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/PLL371400195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacbbcb3d81cdbc6399dede8b0e1e45e092f7670b9a9e1ef1ad592d52203b4f6f. 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/PLL371400196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0efa95ff63ced40c1da11d89d608884bb8eeb173dfb2c963d1f281ddc0c35371. Chain 2 (Bitcoin): anchored in block 957067 (2026-07-21T22:46:08Z), 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/PLL371400197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef72e07c490aa33f29a3463270906c7e18e691179f88df52fd32490e3f2100e2. 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/PLL371400198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x356e5398c3fbb14aefa5157dabb9f8627c81ecaf0ea564cdb6f9f673f7ff5c33. 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/PLL371400199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6c2cd1a4970c5750daf5458214c0f6e74ea4a0427e1210eff550e0ec40a6ef1. 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/PLL371400202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54d65b33a76fed65a5bd63a74527297305fbfb29049cd8539eb7ab2008e130a5. 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/PLL371400204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb81db09124c4f4f71d640bc80e48575ba78cd1d3aeb68e13e4d5544e13bf8292. 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/PLL371400206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88dd79c7cb43bf5b57cad33d4cc298ed8da0bfd196ae8671c6829ec7919ad9b5. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-21T21:25:09Z), 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/PLL371400058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c4b353c063b551c673fdf4bfec9ed5484d34b277ad1c7619a0366f4183b5e97. 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/PLL371400077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x284d849b1984dee247fb035f2542c295dcec53b025c45946beed0cca718cb189. 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/PLL371400061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ff8b44e003658cfcee09d2e8b87e231b9bc6233eb81ec2b8727464714b5fa65. 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/PLL371400062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabe7c18ffbee55894bcc8c42a70b60b21a33fa04b725007e09d8a475ff8363e2. 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/PLL371400081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98c5cfb3eaf46c697f589bc92c2374e225d2d99743ee02b542ff7261f2238369. Chain 2 (Bitcoin): anchored in block 957011 (2026-07-07T08:25:35Z), 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/PLL371400064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32e6e72ebafa93093d17e73277f4e512ea09e79f008869aec9277a06ebc02670. 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/PLL371400082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf932b43a8c8a097ae807d05541b421bd2ea423a23e4e8dd58c73a6390b28657. 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/PLL371400065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe00f2170e07b6f50dbffd1214daed145109cd17f00dc79bb716b5fd93c605248. 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/PLL371400068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7805fb460224384f26af0691ffcf1097820ce13abad3961075aecb0ff57330f5. 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/PLL371400086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a8c42aa602dfae37fe9e3e01a36120b70abb9d619b50260a01b372c2c2bc491. 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/PLL371400069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3275951c549d4278d01909e3ba4a171ba97a3b62060e21f691236143739b9df. 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/PLL371400088.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3c5cd149b76048b64226de1462493226bb00ec32ed1b9cd38ad08fea74e3083. 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/PLL371400071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfed8c69c69f41c60c3d0bc3451ac0c01b00d2b805998bd58ad9e9a1869b86815. 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/PLL371400089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9418bf27978192f0a74104c5f6bd6a2a1831bbe0d9623777f5fe0c00a9d3cc75. 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/PLL371400094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79ff7c5b62501ecf954b4b09f9247453419e11ea7a8d9cd32d477fe6e7880566. 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/PLL371400095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aa527db95bf6284e5cf8787dc77544fad39e3c400f4c8dfe70a74214c521fed. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/DGA092221962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb69a1f318b852cde6b39c24b062327ffaa87e7a4d0f28c6593b4c279ffcbabc2. 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/PLC062241494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07baf4c582b91fcc8e958d4936996fcd748bce4e150b27a23541634eb24681e4. 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/PLC062221584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36cb1dc12448ae47ea75c873563c506f4a20ff2a68731af72b5d6e1248c33003. 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/PLC062114572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce970f9f4bb317d5c506dad58b50093e44204f3f0be5e6683f0a16a5bb48778c. 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/FRX452194088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aa527db95bf6284e5cf8787dc77544fad39e3c400f4c8dfe70a74214c521fed. 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/DGA092221962.