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 0x850eac59e84a8920f0a4351d0317c2b8cbf0667bc5a3e5b12e6ddc040a65d357. 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/842e7121-6e6b-4f60-926d-3f7af5c057dc.json and https://artists.proofprofile.net/proofs/artist/842e7121-6e6b-4f60-926d-3f7af5c057dc.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 0x1a9cab92a55641ef574cbfd183b5568b01197ccce55ac2a8e371c2cd317a2463. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/FIEFE8600001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x787a4ead526ef3f8f38d9f8247b9ca8cebf1e3f1419f6399ad32daf7a7455fbb. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/FIEFE8600010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddfa637c64b429796b8c2d8dda37344e3b9c79765d837ac43f4f2212efd2e3c1. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/FIKFK9200016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bdf3b0e2a1e6a576a1396149b93ec9862aed8f72e704be276a73af3fff3cf20. Chain 2 (Bitcoin): anchored in block 957796 (2026-07-13T03:24:42Z), 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/FIKFK9200020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf80455d547f52ed78f540118b2c2ed1e1164c529aa311f47cf1f9ea8efe39704. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:24:15Z), 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/FIKFK9200024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32464f8f8b654ff237167dffb92cf28a426dcaa20bdc19a10137026bb082a187. 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/FIKFK9200026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c95f7d0711f172f8d811168479826d4878e736555e55c9f5f83b46d5914434e. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:25:21Z), 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/FIKFK9200027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e702a74f1cfdc9b0afd89ebe6b494cc65468f6f280a36420771450e78924b1a. 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/FIKFK9200028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccfa281a12aff01eb46da972b369ae3b8c13772173c3e3faeea32cdd7c350afa. 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/FIKFK9300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f647ac8204066cd355cddc7ebf7bd2eff2fb74097808e1779b4943e3b158075. 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/FIKFK9300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f0b53f3aca1a790529574012e6ffc054740fa6ed457c535052fd261f7286697. 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/FIKFK9300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecd20c73a14271b07842b516b282aae32f9dd201776242f27826b249b19a7d9b. 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/FIKFK9300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5583a623f16203dc42eec2081e54c82891b919488ed683ec0e332cffd788cf2b. 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/FIKFK9300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18d40a17dabe6820ed8df87f85084893ccfd6961cccc8aec062de36c608a56a4. Chain 2 (Bitcoin): anchored in block 957638 (2026-07-12T01:56:41Z), 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/FIKFK9300008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x489068751598f345d56fd52d69b420af058b554b80548524b689fafccfa31177. Chain 2 (Bitcoin): anchored in block 957644 (2026-07-12T03:18:52Z), 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/FIKFK9300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x159510864b4cb3a6e52daa9beb981d4abbb1ded3986197cdd41fba0c5b23250d. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/FIKFK9300011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e8e105ea60c4996a244c7f2ab56dc2afb2adbb3d2a53f4995f7cf15d4ad10a4. Chain 2 (Bitcoin): anchored in block 957640 (2026-07-12T02:27:45Z), 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/FIKFK9300012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91b3c819dfa93a8541fd7150c140af1602a393fba67e3c1aad28697add7f81ce. Chain 2 (Bitcoin): anchored in block 957638 (2026-07-12T01:56:41Z), 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/FIKFK0200039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccfa281a12aff01eb46da972b369ae3b8c13772173c3e3faeea32cdd7c350afa. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:58:06Z), 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/FIKFK9300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84489f6e0016adf838383c7b7b8f1e4aad106181e07f98307ff635d67a0cc7a4. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/FIKFK0200040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecd20c73a14271b07842b516b282aae32f9dd201776242f27826b249b19a7d9b. 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/FIKFK9300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45e708a42f5a2d29c36e907bb5f071c0e670f2fd565953db09b5714404b39b97. 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/FIKFK9200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81bdb306111887e534bbd6b906c6082aa636cbc48370feaebd1ccd3971af717a. Chain 2 (Bitcoin): anchored in block 957638 (2026-07-12T01:56:41Z), 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/FIKFK0200041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e8ea2432a086304a236bb11768e6444f99baceffd90e1fa5a2ceb8ec4b91989. 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/FIKFK9200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5271ee559719387b1f731802c017aa2798941965732d9591d8271545e602790. 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/FIKFK9200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x131692922ee1250ad6b3a4d28f7643bd51d356e67b88aab486fcc76d311a3f03. Chain 2 (Bitcoin): anchored in block 957852 (2026-07-13T11:25:45Z), 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/FIKFK9300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19312788ad101d81dea45c86e66b4741a46ada393584dc1f638f6effd303c8fa. 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/FIKFK9200011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f0b53f3aca1a790529574012e6ffc054740fa6ed457c535052fd261f7286697. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/FIKFK9300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5583a623f16203dc42eec2081e54c82891b919488ed683ec0e332cffd788cf2b. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/FIKFK9300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x459a261e40e4b0bd1289a3080210e83f0762397692c4af934954df516485e592. Chain 2 (Bitcoin): anchored in block 958682 (2026-07-19T06:17:12Z), 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/FIKFK9200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb58928348e801a777482321017b118b88d2f3ce2ff071c38ef43eb3cfea4f16c. 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/FIKFK9200014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19312788ad101d81dea45c86e66b4741a46ada393584dc1f638f6effd303c8fa. 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/FIKFK9200011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d35285a5f748d2b6ace84077811e90bec72c8ec286a2f9dbd1995059408e377. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/FIKFK9200005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5271ee559719387b1f731802c017aa2798941965732d9591d8271545e602790. 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/FIKFK9200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e8ea2432a086304a236bb11768e6444f99baceffd90e1fa5a2ceb8ec4b91989. 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/FIKFK9200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecd20c73a14271b07842b516b282aae32f9dd201776242f27826b249b19a7d9b. Chain 2 (Bitcoin): anchored in block 957032 (2026-07-07T11:43:09Z), 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/FIKFK9300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f0b53f3aca1a790529574012e6ffc054740fa6ed457c535052fd261f7286697. 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/FIKFK9300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb58928348e801a777482321017b118b88d2f3ce2ff071c38ef43eb3cfea4f16c. 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/FIKFK9200014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f45d6f8eac0842ba1d88bc54a3e90831ba61716b181460a24e2b78e25deb5fb. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FIMAP9900001.