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 0x0533def81085f72cc143bfd6a2c5e21b43bbe787775b1ddfdd19c7938110e00f. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/56cd10f8-6611-46e0-9cae-cd0ac1e01f9f.json and https://artists.proofprofile.net/proofs/artist/56cd10f8-6611-46e0-9cae-cd0ac1e01f9f.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 0x0c40d5be9268571931da28f3ce083a558b45e295345c8e86ca9c9a571b48075e. 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/QZDA82295222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e38cbeddfbe4d41c78a66e65b2ec8f5bbe5d74a3c18e52c2f65c19e15e60cc4. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZNWW2214686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5030433df34c629d8ad049815151fd59c0315e3480965a91588483e90cbcf75f. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZTAU2290325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4fef3c9309e18316b68e3e9a8d3e99bc7075d2c4ac73d23b0cd7e5d194eeaeb. 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/QZTB72202282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57542669118096b146c22d305ae290b828d6062f42c0279c89d984fc49295f3b. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-16T21:55:37Z), 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/QZDA72318318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecb622fdd2514f02c648843867839de6eada00192aae00de0db25b0c5231d48a. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZK6N2351359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a4b1b0d039636d54207e846a6339014be515cd98df246815645d0672551948c. 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/QZK6H2330685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe302e7d9847366aceacd084e14a8165c2a879363f8b6c710526031926b33ca2e. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/QZHN52360738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc66078be49c7d5a7d9fbbc4b31c4a979822acdf0e65093205cd31c9e67aed6e7. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QZMEM2389729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa81f2f2f046c0ede31b1ee082a289dd64d48ceef00765b37f5916fb341980852. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/QZFYY2357694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32810273542b20eebc3777b2cddee9aa68c5db3d94456113e491c3a2472b4014. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/QZNWS2372950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62ff3fda4101054070e6525bf309e86c67febdae9aa0cb67c881826e75026a4c. Chain 2 (Bitcoin): anchored in block 957805 (2026-07-13T04:34:37Z), 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/QZNWX2319913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3510d70e2f01a627bd5bbd7908f2743d36e4acffa120e0cdd818d0e7ad4db25. Chain 2 (Bitcoin): anchored in block 958863 (2026-07-20T10:27:46Z), 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/QZNWX2319914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x210235e125fbb92c2b1873dbf004caaab1777a507607ac3d211ed117a179f057. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T23:01:33Z), 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/QZNWX2319915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee6ea3e0e3830b93022d9ed32f319e32b0da8a491096b17990e3b97f192419ba. 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/QZTAY2393317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x859c9091a3b2741ea6463c5935cadc962fd8eabea4c7b49db5fb17cbbe9b127c. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:48:46Z), 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/QZTB72352199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ef5f1e99229ba3d03709cd400184f013d4537a543ef9291651c065e999b0811. 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/QZWFH2362440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6eae7f8fb9a20e3654d27c24ea07ad5760b2b1107220fb93c4deb88563fa5dd0. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QZWFM2348460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf66b2c2904dd26c74abc805cfeb56615a71f9689e74d800467fcfaade7e211b7. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZHN32433986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1c648fb29b3744a4310cde6818a3a2ac1a3299d234a0cc3e62a732a246c1440. 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/QZHN62472629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4ad2665abec506014698a22026f48f065d86a2f98e5b4c04227b00fc121c2b6. Chain 2 (Bitcoin): anchored in block 958644 (2026-07-19T02:21:25Z), 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/QZHN62472630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e4ba17e5a1b0eb05858785dcfd595f6bd863396d3b68cb6efaec0ca6d98a702. 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/QZTBA2347242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa708e84bb536d119a910e27ff7c816acc585503d688327a826b420263bf3e0f0. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/QZHN62472631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03bdf8c92e45eccf2c8e2f76394545cd9d0845f0224b39353d8a9e3073e03db8. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:08:16Z), 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/QZHNA2462927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc792cb5bed82f635783243ad6cadd578860d1d8314138fe56b5c8801c725299a. 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/QZK6N2472069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x782311e6a335370ce787209f2d35fab82f9c17d357a9e0c752f33121fa8e996f. 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/QZK6H2412040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f5a4489557a8a60c7b09bf9d9efd3a342ff82f62dd5a9fdedd94450f99ab118. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T17:50:21Z), 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/QZPLS2457063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32c5511a73f5920644b887fe4539a5ca3d5308d1e3b05890d1715365157c36d4. 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/QZTB32484393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7964b2303ca805efbb37b6c40803267b9b6537c63bf7a65702da8dafbc858525. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZTB82475156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdefb393806189f8bdb0ab1bd5efbe66c4c346c27ed747838b35cdf7653d3a1b. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZNWW2579173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x900c24364b2f18f4c3f84c53153016b1edeea8dc3cb02813801c62a119f938c1. 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/QZES72378880.