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 0xec4c709a1fbd6dfcff35e61f2ab1f4ea25976551686fd948c11c752af0b94cdc. 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/34a0e654-89e5-4c8a-9b49-8e74e0cfb0d1.json and https://artists.proofprofile.net/proofs/artist/34a0e654-89e5-4c8a-9b49-8e74e0cfb0d1.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 0xd478b781837bafbfe8f2032b371c183b19a7ece89b1b2edff44881fdc66d37f4. Chain 2 (Bitcoin): anchored in block 957564 (2026-07-11T12:19:47Z), 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/GBKPL1030599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66a11b8f781f71b12e13b85285ef6b4b90713723e23cbe73dcffb581d4d31d90. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T05:55:09Z), 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/GBKPL1030601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60ecc99826da8dc38edcee4663d13a6f31b113358fbbecb6685bf2ff9889c526. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/GBKPL1030621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a95cbca77929b85a5e5dee57ddc4f9df3034388e0f4baf597b4f736e2ec9136. Chain 2 (Bitcoin): anchored in block 957558 (2026-07-11T11:36:38Z), 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/GBKPL1030625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91e284355282f90207995e5e666fb4adff7fc94835bfd18a5ddd55f67c630b28. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/GBKPL0924624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82bacd8fc8d91934efae15d7b98a3e45993eb23859e1ae699c3fa289ba60b109. 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/GBKPL0924629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0504dd807b9750d6e4cfc4931e67fa976bbce216aa477d8703ef0d4218946f6. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/GBKPL0924630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe00ce7d1a8d72529a6c33c3ec82e23aeb33a8e79daaca1065f744f011ca6968d. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/GBKPL0924633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5475c3bd443a0810f1985d12dd02007da0cdf8055335fc69f8b6438812c79d9. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/GBKPL0924636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b6475cb00f7d6a1551b1b1a3d6267f759986baa7c89267dec96cc54dae0e1e7. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:51:36Z), 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/GBKPL0924640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbd4e18ead458dd6707be801cb65ca00e4819ffc63a703aa7d999eef418ec959. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T14:07:58Z), 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/GBKPL0924641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ab626b3f7fc500f48165cdaee3ccdaeacbc2250bf661d1e5712e76d5fb78caf. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/GBKPL1030604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85b0b39aacd40bf4496e32b612a79af531c90c778dc09c2578869a9afef6233e. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/GBKPL1030614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3928d6351f07dd37e9a2b9b312996314fbc05ea4f20452d9efead4a7184f33c5. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/GBKPL0924646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x306850881c0ba333cea904d5d15bd0700ccb1beb2f370de8c120b84b8c9d0549. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/GBKPL0924648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3882dfeee3fba75207abfab7803a9db2b13ba13c707e77f471ab9a4fc56df124. 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/GBKPL0924651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x205e469fe09725ec9efdb765853a22bb199480778c6ccd71396336ced9dcc3b7. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/GBKPL0924652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb663643c0e39670758190edf825d394a3427c781bf89a0d4f4096221fbd1f13f. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/GBKPL0924653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cfeba03297f98222c7224ea7b3c6acb3ed9388968164aab85ddb206eb19bbd9. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/GBKPL1032681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa956c2eb39e34db3e75534bd829ebff1ad56f36a765ace43b117845c407c4d88. 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/GBKPL1032685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ef1495aef5549f7a7f0603aa8d27aa61d8e6004ca33cbf1087e9d523331f5fc. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/GBKPL1032690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfec68a10c7deed4c9ae8609a8d7a0ffa26b12069685772ddba5364b57741bb49. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-16T00:03:42Z), 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/GBKPL1032697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f9b43187c0a0eade21e3e4197c133604ab0a6e357fad6e619956e65cbcfcab3. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/GBKPL1027752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2eb457331634a39567393c9a374e6124e3124f3702c5524f57986550d6c80c4. Chain 2 (Bitcoin): anchored in block 957565 (2026-07-11T12:18:39Z), 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/GBKPL1027756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b29add1061b4e44e63228ea041d7e08fcd3d6c677e28a79f087072d198279a7. Chain 2 (Bitcoin): anchored in block 957564 (2026-07-11T12:19:47Z), 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/GBKPL1415992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd026eec1acde756d08c5d6a0b09e9104da0cea55e8bee31c00512008246bb429. 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/GBKPL1415995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05a9f78aa4ac1c9a4c06e0c211d762d6f6157f7f47a0f304b9b2c049e151748e. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/GBKPL1415998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03168f726aa01ca3aa4727aa421b8fcbda8deade55bfd7665f6716ae3d87c44a. 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/GBKPL1415999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x550ce9233e26ba33a26b3859e3fea3c9272823d3270c041f6ca3d8a0204df7c8. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:54:09Z), 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/GBKPL1416000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2901e618f7dac86cee791653d82d546259d2b5ab3f33fcbc05975798edeae4e. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/GBKPL1416001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f7831d565b08c3235dbf3fef2f258bef1709d8f7b22a27c1607e3ea04c48c67. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/GBKPL1416002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc87e1c7defe6abe3e7a557a4440244b44d13c10b1235de901a84ed5e58e7bb1e. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/GBKPL1416003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e14772ab7172a50796f98838acad691fba0385b912b966adcb4d59b68e6f43d. 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/GBKPL1416004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd245831ae8d9b0dc64fec8ea9700b6063dcba06e4831efdd88fc2a6cd186c26e. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/GBKPL1416005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67ce35db7670e172598dfa2645fbfe8fc44f72d018f39850da31bb02dfb62960. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/GBKPL1416007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaf4c9ef10b54ebfe95540ddd76e7296656acd83c617ad7788cf58e688cf132e. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/GBKPL1415773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98e2148d43f9cd738511fe43d7f8d066437f0a9a1fa0a73338c639509cf34ac9. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/GBKPL1415774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0461c4e0589c1faf41daec155675e8be02a5fbd68059f2deaae0c7bd2a9b2ca9. 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/GBKPL1415775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48c771e0f84e93a9a9e8cc14f7a43259f3fcdfeca4125c014cbd0ad9366242e2. 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/GBKPL1415777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf9d01749efd308aad1c8c3994505b61555d96bc0f026131007d86ed5422c966. Chain 2 (Bitcoin): anchored in block 958585 (2026-07-18T17:05:16Z), 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/GBKPL1415778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75ef4a784fdae54552dab6551fe73b0ccf33a97f4fc1e925f50d11ea5c346748. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/GBKPL1415779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36989004e7aaf33495c4a94792c262b3468022d84bd453857066902be3b988da. Chain 2 (Bitcoin): anchored in block 958660 (2026-07-19T04:21:53Z), 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/GBKPL1415780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa28607b43cc36b4df8e1b6e550b092da2f9e58439ed848c108a338fab9b6d45d. 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/GBKPL1415782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3ca268294aaf5f8b72aef9bab08185f37acebf5f1a64fc2fbbade9e6b426cb6. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/GBKPL1415784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x989098e557f1d1bcba62f4c50e716d276f5715611de950f455986c61fd8c9ba1. Chain 2 (Bitcoin): anchored in block 958660 (2026-07-19T04:21:53Z), 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/GBKPL1415786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9659afd784ac5e4752443fcdaacddc4b1cc17a0c8695496eb8d792147aa67d53. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/NLL152103334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ad3c0218b7b569f229ba435e2cb8b4b764767d6b57c072277f70c50f24b5189. Chain 2 (Bitcoin): anchored in block 958587 (2026-07-18T17:06:26Z), 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/NLS9E2100019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9f018bd8f663fec18f57712a80ea73a3fa32f5d5bdcc08d30fff57dc4ddf6f5. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:54:24Z), 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/NLS9E2400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d56eedbe9b33a66dc275b6a51f9dd93ca13f5674a713277a1c8312ef71cb8d5. 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/NLS9E2400010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaffa7215c56b3ad555531b6b623c16148aaa587d74e5cd2eb2418f7bee3ff43a. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/NLS9E2500006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x144041a53ac12a7d4dfa89ab3419778173ec1d88875752601cf4d59c3750f9fd. 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/US25L1500207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd1ccf45cdb67939a4ed55d6613b534be736087cd244de7bc3494adcd7ed044d. 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/NLP8H1600054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x088e3f424a19c33c466bbb1cab4799b369e0efa5b56908db25b5a83095fbc555. 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/US25L1500209.
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