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 0x146b25774faf0ae515b759c031e07546df765f70d26f42ec6d2d1c96e8627f06. 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/633f1b32-1d05-41cc-bb41-5bda5df2a040.json and https://artists.proofprofile.net/proofs/artist/633f1b32-1d05-41cc-bb41-5bda5df2a040.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 0x0ae332ade1ee121a6f3145784b5e9a69727912d1482b1b1010c3363ac47863a9. Chain 2 (Bitcoin): anchored in block 958660 (2026-07-19T04:21:53Z), 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/TCAGD2267042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd844a12387bcd5a2d971ee86165db68f6b1db8fad52b332f282e086d21e9ab46. 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/TCAGD2266962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa01f0bd481a7e019be188f2c646b169f0f2b66e0a95fa73d5161059f5c68f88. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:19:58Z), 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/TCAGD2266973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc35e30808dabc90600189b8104aa0c3d217a0fa6d78f6d99a0d1d62f7ec76548. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:55:43Z), 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/FR26V1612799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9085e3190689c479a6816849622a24f49da0ff5091a51de00a3b1856f2a80b1c. 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/FR26V1612800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x511261766b959d033bd57ffade285c418e8085d9ec817f3ec04c7acbc4d4c803. 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/FR9W11825227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fd868c0e3d11a322135cddc8492f184ddf9591ea7da2bb3fabf7df73cda856d. 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/FR9W11825228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3799c989090864bbed05aac520d2bd16cbb01a6c4bf6c5fba30ac7fc1c87690a. 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/FR9W11825229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde17214c7511651fb11956b1eef254e37c82fad3e2d86afd7667ecd119fc448b. 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/FR9W11825231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x539c925947a0c348b5423fa89c4a0626babfd87bb813d0d41c4c3484621a1859. 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/FR9W11825232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecf222e223d6b8dfbc7f9fe644b309c8e9d23837e29521a26da6e88ebf1823ac. 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/QZK6H2086593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9b15c272b6dfac50435717caee7d3fd964eeb977689c6463d96b521c72f04ce. 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/QZPLS2177149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd9be18f533720aab4c283a58db1b4e77cada5ede1ff19c30c2c615448462a6e. 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/FR9W12317928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99e2980fc4b0324c0ba97d093e6fbbca0a898b9676da3d606520fa391a237189. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/FR9W12317938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80fd54fbdd335c2a9b9ae0d497de66c6423214991d3e905617d6f5718dac939e. 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/QZFZ62549924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb34f31b897cec7cbaec4eb1ae99da4ed4d44984f6ba33f1c8f372fb2c30be52a. Chain 2 (Bitcoin): anchored in block 958785 (2026-07-20T00:26:37Z), 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/QT3EY2510583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x253d656abb6c8faa01aceafcd5720114d7c0cddb9a6ebc5963ddc1e98b56b40a. 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/QT3EY2510584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3caaae18d0efed44064441f5939a02afd967fbfb3d8e6b3949349a810d2949b8. 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/QT3EY2510585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x916b0c4a68ff65a755095517309c15c0541d36f178a554d918909e3aaa3a19da. 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/QT3EY2510586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x630991e072a46e4f3036cd8f5bbd55c82350c21f0efec0e7164410dc11030438. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:38:57Z), 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/QT3EY2510587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x509b47fb6f2d5105f1848a08659994af33ef2ec25bf5204c3d2ffa526c410eb1. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:11:31Z), 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/QT3EY2510588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e3d9e226500cdddefbeef22d2b7ef7d404b4a1c6779b2c8982334d1cbe49140. 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/QT3EY2510589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43f2a2b0ad12b5c70b9717154cc036040e315c5b4c5baa2605980ef715291745. 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/QT3EY2510590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66052fa603be32208885272050be5e33fc07af59ea73ed3fdaab0539d54c2eb6. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T16:38:44Z), 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/QT3EY2510591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2761095125ef7b7e11d656e0c400f222b4727ac07c904bebe2dbc052d8fdfa4e. 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/QT3EY2510593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bd9e554fcc597d0ff809fb7d0cec466c6f2395aa9f74b9d4f4af3099fd9a681. 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/QT3EY2510595.