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 0x63891afde47c24040a4d405cac8913a9bca34568a0aeac7065e4985b5b8dd7bf. 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/acf9718a-e0a6-4f70-b67c-3a912291b99e.json and https://artists.proofprofile.net/proofs/artist/acf9718a-e0a6-4f70-b67c-3a912291b99e.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 0xf58caec34883a8e73527642dbaa8b42b1cf9a341d03c5e4e8c72bbdca94463b4. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:39:47Z), 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/GB8KE1950150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd3248f718d3549fa6d12207230604ea4078f1ce7fd0855c3050aa010252c104. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/GB8KE2053298.
Liondub Street Series, Vol. 54: Foundation
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26d2ea889c9ed8abe736584aca0a7fa402dea0c055dc02e6b2c9b7e614711a3f. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QMKKH2000740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5c49cd25805a29954a1dfd805d5e37d49c1967ceea3f1efd55bc11fcdea4faf. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QMKKH2000742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x069d722f258b9ac7f2bb17299591b0505af9ba9b05546c229e9b94e3e14ba4e8. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/GBFG92100008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4853b7fedf4c163cab72295c92feed7626e64235801073a8d0ad09df0c8eec8f. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/GB8KE2155762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x154cc439d3a1146820ee5dee6ec9da42ad7437a8e1580ec621490b6260c89dcd. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/GBFG92200407.
Take Warning / Meditate + Flip The Fader remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83a11909b4f2d645025da69b7d37e59794ecc75145aee021dc9e88131bbddb87. 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/GB8KE2302428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0411ec9e7cdf638f48b2d98297b4da0a42bfe38d2daa123e43fea452b543deb5. 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/GB8KE2302429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1605803c5e5949045b4f62dc02fbcc9d25ec89476d873980136b2ecdfea7c4d5. 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/GB8KE2302430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8822fd9c35f0dad2f130046631ef179ac44cd5c4b02b195e55d9dc8773552e61. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T10:28:14Z), 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/NLCK42236829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd9d07c0c42a6b283bf8cbcec62cbb24b3289b7eb5557e8bb54d0dbe9afbc8ea. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/GB8KE2408836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d25a118196bfbc0c0a95a597c221019e0cb45e0e8707450cb27ba6a52d00898. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/GB8KE2404760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe734f750cda6bfbebf6784ca8ff6416d9bf2c8351619a8dd31147b0093f3a328. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/GBFG92400086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb0940d682db16933812d947dfea65a405c66fced9bb8b98ad9aaa5505d2e9ed. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T22:36:07Z), 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/GBFG92400087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1181c5738919fea247670a55a331ca20cfb59c738828b3d4b640acdb3ea2c83. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:28:10Z), 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/GBKQU2473411.
Speaker Louis Presents The Dub Pound LP Vol.3
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bf2fa92aef0be5eeac5884be1c2c15a3a07afd23772e515d23b215859c6c8d5. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/GB8KE2427510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf31a489849573ec32d4462309039cb4570674c5735f6f85360a611c88788d72. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-20T22:00:50Z), 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/GB8KE2427509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc14c237389cc5112ce2f0e4295e090aa3c5fb0bbc25bb0087321c610e2d584c9. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/GB8KE2428308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c551e396fb34794aef4424536b0d28e0044ebaec9f09ff7ffe8d979f4fd55cd. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/GB8KE2428309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fe6079e59a53bc71c689293a887830b4db46b138c1d3c8ed579ed00874ceb03. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/GB8KE2515320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f6f311ca6b5ddf61b6377d25e8c676b9b4751cc6050f7c9c8a9e8279497a19b. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/GBFG92500085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17aacfde1efcf635b19c3fc3291c3dbc474e54420d955745edee43db160b82fe. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/GBFG92500096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b965a36ff79d665ee7b2699e018ef4d63603891aed069f2cb4fcaeafb1ba972. 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/GB8KE2321359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bb3c1512dee08c624421cd172763086297129f9a79bfa208d45d54f82f4cd3f. 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/GB8KE2303233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda5f0837fa4a76392a258ab92c4c6e4487d2208b4e8f31a67cb717d0d9e43e86. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/GBFG92100131.
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