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 0x6c202a0fb0cbf1c756b77811ae7db62976757737e0f7f73d416248cf9ef62ab2. 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/679c722f-cd1d-4a43-bfd9-496e0607a17e.json and https://artists.proofprofile.net/proofs/artist/679c722f-cd1d-4a43-bfd9-496e0607a17e.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 0x32130bdf61b937b73255a582c899485923d7e8b4ea6ff4bd2f191a5eabd97a46. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZHN42311219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cf540099ab09837978b1cfdacada4db6fbe0f476e846367dbe2a7bc20da5df6. 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/QZHNC2326694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fe4bb76ca810d3fa54aa2630194c59939fe033473b936b49cc1b0c90978c92e. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/QZMEP2391110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef9ec54eabd3000ab506b797e662b9a319d52bde960a29690ed0a77fca2916c3. 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/QZDA42498231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcefd48bef42250536669b4ef47b2a799548058a49abd859ee9031f60dc6cd17c. 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/QZDA42498232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea5845708f03c94cc959f3bcb1b9f50cb02168ffcee7027a7c11f930a3cc2e04. 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/QZFYZ2493516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x273d3cb936581cbb7b03ae2c04fd0ef1eb00fc91cc2e526a6da517fb184e3023. 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/QZDA42498233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07c804e45c3925366e3d16652caf9e8177931ed5495f002ddfc808ac648088b7. 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/QZDA42498234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef9ec54eabd3000ab506b797e662b9a319d52bde960a29690ed0a77fca2916c3. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZDA42498231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07c804e45c3925366e3d16652caf9e8177931ed5495f002ddfc808ac648088b7. 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/QZDA42498234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d03e93d9cba9cd175647252499a6f0f8f96b6760406dfda70181f93a722788d. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:57:48Z), 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/QZNWR2434688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb24d35cb8d61a743fa555b580855afc45c22619ad62b9383b2c3cb86cbca897c. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/QZRP42407864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02d12267ba3db6ba4ea4ed2ceceb7f2d12a34a26d7a153e24942dfb786d1e2ee. 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/QZWFJ2457390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3448298d79e69de755084465e8b75a903df77b5f0a7bde6cd760dfe52532ac9b. 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/QZZ7P2474692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x892b4cf629cd6190d7de6fa7e517cb45a40a2ae7a78e3ad7055675cd5c514a99. 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/QZFZ32530527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02d12267ba3db6ba4ea4ed2ceceb7f2d12a34a26d7a153e24942dfb786d1e2ee. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZWFJ2457390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x892b4cf629cd6190d7de6fa7e517cb45a40a2ae7a78e3ad7055675cd5c514a99. 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/QZFZ32530527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3448298d79e69de755084465e8b75a903df77b5f0a7bde6cd760dfe52532ac9b. 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/QZZ7P2474692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbe82bfe5cbe19a08835c239997e70a39bab14e9ea8cfca602db4df58aa94fc6. 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/QZDA42576949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x892b4cf629cd6190d7de6fa7e517cb45a40a2ae7a78e3ad7055675cd5c514a99. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZFZ32530527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59ec8b5016377705824e1a852f73b1d571a6148a66e4a7aa29a68c68b04b8fa9. 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/QZDA42576951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc734d7b8be7dd45ced441f6e8a531cd5e9440d7b16c858023b969eb8f947469. 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/ES5152500764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44992d17d2e204b11f5fa22ff64c4610e6fae2f5b262b9094cf2cb1323fd956b. 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/ES5152500765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9830d08fd033e979bfe7c47012c0fa10b01a1baffc5755f7a4417c0206c7d56. 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/ES5152500568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9037d18be135912be47dbfce8c63771d5612aacb5dd525a64215a7bdfb11f0ba. Chain 2 (Bitcoin): anchored in block 958474 (2026-07-18T00:59:09Z), 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/ES5152500766.