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 0xa0c1a4cf61dbe85240060ce863f6dad28c21113628178f419d3962dd95507f84. 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/ed547b82-e643-4fb6-bbd9-43a6871f6d6c.json and https://artists.proofprofile.net/proofs/artist/ed547b82-e643-4fb6-bbd9-43a6871f6d6c.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 0x374a5d1e0b7ef8b893ad597546645df89303a695a9491a6296d6a9273cbfe11a. Chain 2 (Bitcoin): anchored in block 958556 (2026-07-18T13:21:06Z), 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/EGA1K1831961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ff27cf7d39e731bd250a08eddc085ec4dbdf2f41cf3f43c207af5716231b893. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:57:42Z), 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/EGA072000054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ba1cf541b1b5137bdb0b6a915ab5ffdcf1b651c1103089dfb53e975b53adc46. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/EGA1K2001556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6304ea5e984fb3c760daaff746b0835f84d1fa675f4f3a7ee6fb554033768123. 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/EGA072000334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe045a8db03093c857b79f5af3cf0d7392462435361c9f2ca46386c69ab5155ad. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T23:04:48Z), 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/EGA072000254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66a067c846ec4ef254fea56afc86127b334ec9b8127c87f2617f0716d6602606. 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/EGA072000212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46618d3af57828811b79855c1a3c50087ee4a61197c66584fc61b4b5dee0dd16. 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/EGA072101273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27c6e38fdde2f40d57e2123fdf9855ad6ef72ee798a979756315b2b6ce94e59b. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/EGA072300125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x522e6bf5516f67815d952b1ddcaec1c2320cae2538f12e290a2d2f9a37afc18c. 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/EGA072200238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1b79a1c0af44e95c4fe28463eab17c964db66a39b51bbb7e1f89f8b208cba63. 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/EGA072300251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4c01489634cb1d5041b3040e319992962892505492ee89411f991becb7b4956. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T21:16:18Z), 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/EGA072300610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67ff1bb4a3d2934617897924734f774c4ab4fd3f23d88e973fcb4f8204b3183f. 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/EGA072300633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a352954254563d568066b040bf417c18ce624864b7025cb2d4fc4189e498fa6. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/EGWKS2494701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf24458fab50c11e209153d0c956c6734665e063b513434c3944739c1ad68102f. 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/EGWKS2456601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ded89744299dc9554838ce77c5c0184cf07fec419f406390cc2ed7b0e4e8ce7. Chain 2 (Bitcoin): anchored in block 959069 (2026-07-22T01:01:22Z), 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/EGWKS2450348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89f223eb395d336d7512150d9f042f19ab71507d98da05a9a1fe1ffa8094d9d7. 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/EGWKS2567953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde591a210c09956ae32da8978c95eb8f65232698cda32525e6779aa4a57b2daa. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/EGWKS2557154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefd5ac9513fd98e6ed81eed6c1b8dfad799e33a3f851a92953f79334b7bd8b85. 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/EGWKS2582705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ef14739db6c3ce30f41621a87c3044ee770e6b604c50b885a2f799dfb25620e. 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/EGWKS2517432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c16c3e23d3c47aa60bc985431abee03666937cb76a5355a98187c9ac587677a. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/EGWKS2555384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x180c2b95b7b23c4b08448658cf9e1e36d95b1d5ca8c22010f98f593032b1ce93. 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/EGWKS2520306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd148e0ea43e67f94ac5829b42926489fb400d67fa52211c3e59f0d091ab95b38. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:42:17Z), 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/EGWKS2541387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87e101ad09fe4277fa5eab3258877fb7a3a650af4734c8fe63bbc76e1baef98d. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-15T23:40:38Z), 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/EGWKS2563821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72345e06abd4eafa7844d554eccfb08cc1e3b6c7faebad5f804b0819016d221d. 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/EGA010545151.