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 0x7530287624dba07466cfc49b4c9040fb09f9880286024239403b89786b4dfdd4. 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/c7da46d8-5ec0-4b87-81e3-f8de33a71002.json and https://artists.proofprofile.net/proofs/artist/c7da46d8-5ec0-4b87-81e3-f8de33a71002.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 0x635cd70c459b34f38daeef5d490099e57dfd7eb573fbe9a103d5e6a3db96b853. 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/BXIED2100118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5aa51c69d376fb9a5d5624646e97ededd7f5f9cb5f4786ecee605589efcc924. 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/BRQT62400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd824d2cd657f367d410a28dab0ed2901c8353abc3e278b868fc290254d2ab7c. 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/BCML02300014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb313513bc36d4eea237de9a0ee08ed6771dd7e1a154c350bdde64ffd28513d44. 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/BCML02200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80b4e791a517b1b2c2c832a1c6f75cbe936187346d65bf57956d1b9a37455870. 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/BCML02400010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ff22982e215f776356b9164efdf044ef8208635f453e3e24d7e954bf73c4d48. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BRUM72401091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa6412cb8175b9cd3861ecd6a174a7675f231b04509685261951a8b6060b5dc5. 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/BCML02400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x025822d6f17f2bcb7aac67468fefae10377a1858705cceb1f270a56c21a75410. 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/BCML02400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88e2f952ca4ccde9b1140a700ce16c490a0846b5e55ad92fa4c4f623dc26a4b0. 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/QZ5AB2363896.
Catucando Gostosinho [Redükt, Discover (BR) - Remix]
Catucando Gostosinho - Redükt, Discover (BR) - Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa81fdb9afc8d98e23973971b89135788319e0c1d78f87ca7c3acfb2e1985fcb1. 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/BCML02200040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd270a387006ee79d14b65f380890e4bb6e9bc3b26a6fbfc3ecf3e130b5523e87. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/BCML02200037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc98acb57a8634780746709ad66cf3800d622526aece20a1bf8bee18df1652987. 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/BCML02200035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66d45c59f4ea3859c2ea8d4cd8c103e95a6013ca206977224187fb794f1cc50c. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/BCMLO2200033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x241c69f9727ab08584c236dcf0b936bf7393a078438f28b2c14bc177360c92c9. 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/QZN882268928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26539043eace3e2b8b9651f39098c5430cee4ae27f44b47cb26a8a40e5b95e98. 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/BCML02200028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd17b090678a94ffb754f25720bfc9027eaed40f1c2bc06d43e2dc89139b86ab. Chain 2 (Bitcoin): anchored in block 960179 (2026-07-30T00:39:11Z), 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/BCML02200026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0c4dff9c1aab3d170a5320f6ca7a7a65ebf13c77740b09ce7102912592990be. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/BCML02200016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c1731729ade5e891ab24aa6cd1e772ee65d566045cecd18ca93d36e28416516. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/BCML02200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c14a37dd304ba6930d57cfa41aaec1088c2b45cf96be028ca7f5798bb0edf4b. 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/BCML02100043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x099f7d5180b3b4976c8dd7114c66f2d21bfbcfd264f0b091c6bd3d766f1f1ee0. 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/BCML02100034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2af02f843453693916d565ab35f7cf18d6da6f9f484e705ee6835219d6fa86e6. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/CA5KR2164990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72cec96e2784270163f71975744aea32de5f8593dfab269f856a078d0b378f59. 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/GBLPF6668676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcae0ae3fe663a2390a3a2fea12b43d4214b4972012a6d52657aa501c935d1384. 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/GBLPF6668675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e2178eb8495e91e2d3cf074f2bd031187d2ce1707e2c75c78102097dbcf3ebc. 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/BRUM72400639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x345e5196e058e5e19c473c6f6e79d5f0afdec1b571a21e9b4a004694adb0f9ce. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/BRUM72400640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeef94852f276c24755623cbd5d626c1c59ed9f7968a9cdc0fea1401a9a717c80. 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/BRUM72400641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca8e12e9c89b26092c09426ff5f2d2556b3d2a73d48c73e9433c15fdaaf9ff0c. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/BRUM72400642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe88c6f58cfb1ed8ce2e47a875506d7fca5e45ebcd327b34e88c003af0b97f704. 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/BRUM72400643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58425c76b5af3d2451636702447e58ea76e30a8dad55534c639695c69a77061e. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/BRUM72400644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f2283f5c42dfb062af864373c95364b5d87040d2cacf21761ddd151cc2eb063. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/BRUM72400645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3426fdabff56993e59f0e4eb2e2b0a040d6de2c3c4abb9af27861c9701c814c7. 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/BRUM72400646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26cf372adfd4e9879dade9217392f90334b36a883e754ff124d2cbb013b89784. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/BRUM72400647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb970eda7c5486145512414aa1068c94db0e49c616f7b504fb022ae8c7d3747c3. 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/BRUM72400652.