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 0x1b1b22101ed598f45c90847e27edf0625b91e383726ceca40b6010520dc5dd3e. 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/39cbc48b-032f-4340-9b44-6a27e6c3f1c9.json and https://artists.proofprofile.net/proofs/artist/39cbc48b-032f-4340-9b44-6a27e6c3f1c9.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 0xac849027f816d6e743f71ce073085e5add232ecac25930435b94b73986c46ddf. 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/QZDA72056765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f4bc33c9a4dcf195f047ca842273f29a467353d420e963a5a165874539147fd. 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/QZFZ32113764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x664fcf2dd401710c76179cbb7d69088b6452b1d2b6cc850ea300bcc36b30c803. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/QZQAY2136936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd8a7cf4c01819164f2a93a1c2ea3499e7b93b0c9ae8177d7afe5b5d48418e8e. 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/QZQAY2119101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x999bfd46030247f7a3551f9ec8aee27fd31dcc1fa745e7f1ca175cdd97e9d605. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/QZMEM2122166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x371657ea18e0f5fcc3e466139e4c3cf52fda2bd81e8756e2d83bc337d35a6b84. Chain 2 (Bitcoin): anchored in block 958325 (2026-07-16T23:40:19Z), 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/QZRP52218845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf54150cd40ca62529935c96ed87378801b0218010d39263b28e2110b135db89b. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T07:20:58Z), 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/QZTB52272956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x865c16b4dd75e031ae27fc82e951774c07faf636b1d37c35b3907ef6e3ab6edd. 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/QZFZ72348419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x832f5fd60c6e8dbc654a8cba89c72c3cb02301e835b53be1f1ab7f92124c7f37. 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/QZHN82220874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2854244a00a66f48ae11d08828c6fec701ffbd7aeac2178b448c321e2c287289. Chain 2 (Bitcoin): anchored in block 958571 (2026-07-18T15:39:25Z), 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/QZES82393756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0127056b49a1c037d92034e2eef1a3d5842eafc5af53af582c6a5b9802fa7b33. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-17T00:01:45Z), 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/QZWDD2361745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cb463a6ae2ef292239b4691d0b4865d61d91dc18420c101e1e057bc23dc991d. Chain 2 (Bitcoin): anchored in block 958510 (2026-07-18T06:38:22Z), 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/QZWDD2366274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a8c3fc6d86a7ff5120876d98e8fea1b5ca4f4b22e6b954c105c513dcddacf24. Chain 2 (Bitcoin): anchored in block 956383 (2026-07-02T18:11:59Z), 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/QZWDD2369200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa01bdb2f0d13af5bdbd39b5553387a16c32d212b290c3abe7545a0f2e68d27fe. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-20T01:43:23Z), 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/QZDA82462626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd595c20da1515ab6d7ab0a29f2bc2aad2ce00f49ce4a614431810f8e1c677dbd. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T15:45:27Z), 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/GBWUL2462015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e705d54b58a35d14641a393aec18ca2b7f773d0baab742d055b5ca20c4bb725. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/QZTV32439705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91e780c961bbb26da2a69274d99f34b7f922710f524e124db0a66b135c61d0a6. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QZWDE2433101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48a505a2b4166b8e1de41ed44674476f3afb8d31828bc7c858944c85e1ff5f3e. 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/QZWV32427363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91e780c961bbb26da2a69274d99f34b7f922710f524e124db0a66b135c61d0a6. 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/QZWDE2433101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7102f27dfc0b74f6c469c75b4f32fe56962a97b452435b6f2006b298e3719cac. 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/QZWV32428697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x690c9ae667574b5671cfebdc8f8c96b72b9ae774833a9d131bbbff1f61ce8a84. Chain 2 (Bitcoin): anchored in block 958368 (2026-07-17T05:03:25Z), 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/QZWV32432602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e705d54b58a35d14641a393aec18ca2b7f773d0baab742d055b5ca20c4bb725. 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/QZTV32439705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42b703ad0af3f495acb12a644bf38d66511955ee2ffde4de1b476f9bf49faa50. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:09:00Z), 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/QZTRX2437145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0be12d2e0c37d90e23c92c94bcd654b3ef1c83b653f84df34e682db5168e9c8. Chain 2 (Bitcoin): anchored in block 958514 (2026-07-18T06:54:37Z), 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/QZWV32432739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8966e93503cae71d5b3a87af6544c6668060d7ea28e99f659eabf1cc3344b30c. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T11:03:04Z), 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/QZ5FN2535560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab6766312581b18bb796c1e8ee779a482fac23546048be765cbdbecc5eef365f. 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/QZ5FN2572336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde837bd96a30dfa1eaeb9522a5e126245382673deec993b59ea084b1e5b6cce9. 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/USLZJ2544992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3795e824efc7a576e4a2d00da36323928583f6d191869ffa5e22a9d23a64b636. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T09:49:57Z), 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/GBRKQ2511116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8149aac45e8f5a69015d067a7da410fb84acd82dfe5e9139daf377579f8e6013. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:45:00Z), 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/QZTV32502987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ae45c5803538a562a5d861d0bd99b33a481e2497de5b9ec6e4c3b92e9518835. 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/QZWDD2557002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bc9bc6fde4fa30000dcc0cf4e6de49a36c05677bb7d6b5674c001a966367373. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/QZZ8A2513047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17523da8925e81d198892ee2b29d65fd60e756f49b3c97f7d9d6ce6d495b8a56. 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/QZZ8A2574841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb426dbb6f17ffa53f70269c36de37a7ca28f808505dd5473f3e0e30bb56534cf. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/QZZ8A2575046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa13954928eb328e25ee752e72e1ddb037dbcf438d6492be5ca00f5babd2e5ecc. 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/USACX1003361.