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 0x92b45e2ec88f7c300afd221b67c20d80863cee5d80fa0dd13acde17e873cbb69. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6c84d07a-471d-4344-b3da-989e08f0cc56.json and https://artists.proofprofile.net/proofs/artist/6c84d07a-471d-4344-b3da-989e08f0cc56.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 0xd98a75bcb81aa643ab3c01e9a990f73b5b1f0591ff60679b28f9e5ae8e134821. 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/FR2X42546934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x720117ecd8952a3f78e2478a6e914fecda94b1f5d66a705f68990e6863c2805f. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T18:52:12Z), 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/FR2X42548237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20f9edee1b8682d92b645b3819620194e1354d93cd1e22d875ab8f8275ec8330. Chain 2 (Bitcoin): anchored in block 956620 (2026-07-04T07:11:13Z), 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/FR2X42585324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdce34f17002d7b8ddff41d6c6e1a77dde4eae71bacfc1cc9f29fb9680b4659c3. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/FR59R2503668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4781593ba45db8d2f7a233980b8ce48a47bd66ef7204815eda315a5b27ff53f9. Chain 2 (Bitcoin): anchored in block 958417 (2026-07-17T12:56:50Z), 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/FR59R2503666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde186a2b2be3c598dfb0d7a4f9ca66e202764e6d0e44fc7b2390c2db59c089bc. 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/FR59R2507520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9325067587b21319ff143b5dd2cb564282c75d19edd98197bd39d18e71355631. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/FR59R2520071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b0034ee45dc3ac449b016867c66501dc002a6e3da51785f46d535e3694eebc5. 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/FR59R2520069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16092f26d83d3c38baa0edd49e3994d4b53cbaedf4666debebb37fe88cc1d91e. 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/FR59R2546379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61c609a667cc00b45ae5b861620691072c3d43bb118bfa8e263a1fd6ed27ae76. 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/FR59R2582781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bad1ecfb8627cdb3be86460f3c2376d059ee9e0534a76b28d31a36872b8ccd1. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:36:28Z), 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/FR59R2582782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47cdcded3b867c89bc09538d5a86a21a6905dd630b0c5d0566dadd82f1158e35. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/FR59R2582779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f1ecbaeb58f105c46d62faf8694115303a3c89e18ae11e24da3efa6c5ea0e0b. 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/FR59R2582788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70c59cfe5b8233d47badb24274bcd731556982e3deee68d8f7fb8cef6ff5d500. 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/FR96X2504623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8664f0d427e712499258baa2a389c84b65a425226dfa02fc75f15c5bb47ca11. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/FR96X2550989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x576ab7ee28002fac2e182e42dfc471aff416d59586bac9bdd11f632897c11b08. 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/FR96X2585201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25811c8b98d74da9b724ba51d3aeae61beea8bb62c37c025077fb9ecbf724b32. 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/FR96X2596593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x108b9dd26e286625c6d222b16c5e8bf72519e7d7d02a58bd2aa61b958d63b354. 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/FRX282581156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48c068200a202d8cc523551f64dc53eb9a71fd300a14cd630c81022bf5af7d6b. 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/FRX452599894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb74dde62eb425add36f0f8adfca65358d41f95a19ec747e9fee0a2958b292412. 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/QMDA72575864.