1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x819136b8e2ada8ff3e9601255c9b3d59d2bdeaa77a4ba5473f4c864e163e3a81. 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/f714ead5-51ed-40e7-8b02-53838ad98dd3.json and https://artists.proofprofile.net/proofs/artist/f714ead5-51ed-40e7-8b02-53838ad98dd3.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 → block OTSBitcoinBlock must exist at that height 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 0x9510f0239b6338b0c47968a64bc638175703e122330ab50938deb2e9aff9e755. Chain 2 (Bitcoin): anchored in block 956862 (2026-07-06T02:10:22Z), 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/QZMEP2447504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda200953a5a7b376e493ca8c6c399eb1e164e8d2797c0f1d10ce4875f52ab03f. 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/QZTAZ2449936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x485abe9222f94c87f0148cd1d3ea84315629d59702630b24af2c4f92728a3489. 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/QZTAZ2449937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b18f841d755c8dd82161b7570ff6d1cdeccaf5d582d0228ff0a3b97e867f0c7. 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/QZTAZ2449938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x349f96a48cd846d795941246a39115ee5c968f5f59c0785cea27abd00da3d01c. 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/QZTAZ2449939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63b690d2a5815005bfb964dde3ed52dd885dcdaae72be139bc45c6a705a6c566. 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/QZTAZ2449940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacb41f5709e2af44663b0277f05c3f0ebdec089a9bc4753cf08b14997a72f554. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/QZTAX2420401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b18f841d755c8dd82161b7570ff6d1cdeccaf5d582d0228ff0a3b97e867f0c7. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZTAZ2449938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x349f96a48cd846d795941246a39115ee5c968f5f59c0785cea27abd00da3d01c. Chain 2 (Bitcoin): anchored in block 957599 (2026-07-11T19:42:17Z), 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/QZTAZ2449939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63b690d2a5815005bfb964dde3ed52dd885dcdaae72be139bc45c6a705a6c566. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZTAZ2449940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x367780079807b019cfbaa2605dea2c1cd83c356a2bc9d1b1462cbfc90c2d21d3. 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/QZTBE2461135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x367780079807b019cfbaa2605dea2c1cd83c356a2bc9d1b1462cbfc90c2d21d3. 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/QZTBE2461135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c83c87576be72fc6cf3bd16f01ab56392bb2b44eb0bbbac52535b239575348e. 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/QZWFM2436076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fa5fc6e1def7195beee8ec734cc89a43d35b8e46be73cf1309efd472f39f960. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:08:32Z), 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/QZZ7M2446356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15b61541d3c578cde2aa7fb85b5c8df9245ddc7d87863ce8f004c2756d329f19. 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/QZZ7X2455789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15b61541d3c578cde2aa7fb85b5c8df9245ddc7d87863ce8f004c2756d329f19. 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/QZZ7X2455789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c6dc2f603bd4d8dbf8a7a2ce6706ce9906322b6839dd7cac3afca07ba966601. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/QZZ7W2441833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c6dc2f603bd4d8dbf8a7a2ce6706ce9906322b6839dd7cac3afca07ba966601. 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/QZZ7W2441833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35eedbf856d3383c95b135a51059b02729586dd1141e14ee8d990523dbe712e7. 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/QT3F32422661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35eedbf856d3383c95b135a51059b02729586dd1141e14ee8d990523dbe712e7. 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/QT3F32422661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b5038dde662d188afbe72d1f91da060e2a49a09d30501cb3c0120dc1ced68b6. 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/QZDA62596955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9eba2fd6d76d55e6c7102fb0b4fd1d0633fdbb7c452b1868894f6c4a37ace29. 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/QZES92572235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcc1ac9def2953f78f2b4bdd033dd9fe93e6b3ba0e885548827a8cbf2ddbd027. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QZES92572237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9eba2fd6d76d55e6c7102fb0b4fd1d0633fdbb7c452b1868894f6c4a37ace29. 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/QZES92572235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48d158c1c05096a90de6b860430bd5f6a4bdfd4ea2a7a1ed67cc8a8e477c1ce5. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/QZES92572236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08ca4223a95a4b50a0c2adc35a287bfffb901ba4c281774c08bf01a56fb7b172. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/QZHN92559127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08ca4223a95a4b50a0c2adc35a287bfffb901ba4c281774c08bf01a56fb7b172. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/QZHN92559127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27fdb3eb0dc1990cf35263145e334fe44cb2e0ff27893e584d6a0ad7546af1c0. Chain 2 (Bitcoin): anchored in block 957595 (2026-07-11T18:26:17Z), 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/QZK6N2574672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7983b0c26987d90a76f87ddacacbbfbf2e988cb5efaf56ea6e7f44abe9defa2f. 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/QZMEM2529007.