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 0xa81eee2c7940b72014cff601a94727678c65c09a6938bd0affa4ff6218e62916. 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/1b0634ad-7d0c-489f-abc3-7dae5d64ad7c.json and https://artists.proofprofile.net/proofs/artist/1b0634ad-7d0c-489f-abc3-7dae5d64ad7c.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 0xd134a2e1f369ad14b04cc6479689526815483af6c071497001763e3b3a0f8d50. 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/QZES81874113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cebb1dfacf79119c3f722a8c2ce6df8094d103833d77bff458502a502e448c8. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:04:51Z), 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/QZFYZ2062782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c8ef04bee84f3fc295832367bd909018143599f5cfccd140ba3964fc9c4a86c. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), 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/QZFZ22023128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3357b69a906bfac6f4f8a360cb02cb63bbccc66afa67ad94386d311d4e74503b. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/QZFZ22023129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8524f051e471df7f819de4b718f5b0029c1f94decf848a56b8a21dd8048a5ccc. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T18:30:51Z), 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/QZFZ22023130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c712b7b9abbc77b39e87cb823b93bd82db39efb509c9d4770afafa59aae2a91. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:44:06Z), 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/QZFZ22023133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8232529f0f3940256452514c66a6533cd13334b5ff21e345a152ef2315afc832. 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/QZFZ22023136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8f9480fbcd375ce61767ca5d4ada1040633db6157a0cd7d894fae9487c83c86. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:35:24Z), 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/QZFZ22023137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fff3f4c08c13ad63419373866e8e8019e8ed82c210a953cd9b952cb6b4ed72a. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/QZFZ22023138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x914b79805dfe0c27d2c8b4a0dfe9960d1909acea95ae61727cfc3eae9678c0ba. 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/QZFZ22023139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e70fd3675fddc9239086e09c63f03e13c804542312f2b4aa798a8bad92e2294. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZFZ22023140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x433ae9ac45e2f85e7988fb10afe46974b6035ae311f7d958de7fddfb971ebca9. 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/QZK6H2076680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9574bdcfcc7031b1a4299f89452c0b75f5023bd74c005ef0cf9ebd2bc4a88256. 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/QZHNC2134547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2c57cc8595f6d4cc07b6986e750f06b2be479266d9e4f85744604340496ea4b. 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/QZHNC2134549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7db814308e22d965182b26f75feece76303e296b838f5940b78372033ada5267. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QZHN62299806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8214add413863fa0347376b0ebc037f55fb76abaef07600ee3c758889b5bf358. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T14:05:15Z), 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/QZHN62299808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb02ba16da80f14389ef0e1e0c4e8748a55900b6788f9d3ac14fde5a9167c4652. 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/QZHN62299809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fea603be212bf15927c98a673b98c30ba1fa190721e9033a3b5e366a5c4a607. Chain 2 (Bitcoin): anchored in block 957551 (2026-07-11T10:03:47Z), 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/QZNWQ2265400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8634069a4421295d520c7642cb8a4e2a14a09730d34fdabbd8611a9a6c91c30b. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T07:05:52Z), 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/QZNWQ2265401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe35d2c6ca17fb0249b9692fcc757f35b06885b69931f149ea8adbd5cfad2fe17. 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/QZNWQ2265404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1a942f0f4757f7e91c9f1c95f2c4e3bb3b881db82dd396d915eebbe0bf75fd5. 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/QZFZ62381951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe58a3d75f701b734588fe99191be1a28b5cf1b8fc29df182ee2900f05042c293. 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/QM99V2209404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x009da2b42891385f3087a0cd79e299a352cea7efffffcadd5a410436b83fbe27. 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/QM99V2209401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x537754b6595dffdf23d38db8af62db19e22ce003c9f13adb1933cd79ad4be131. 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/QM99V2209402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e5fd6893e764a22c728775ff3ddc9712afa5c01f6bd64e8d07bd1679afa3d53. 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/QM99V2209403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe58a3d75f701b734588fe99191be1a28b5cf1b8fc29df182ee2900f05042c293. 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/QM99V2209404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3ae94de994112060bce8d8da826ba77611fbb168cd3c60247687e698360843d. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/QM99V2209405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd30d6cf7b7c068c57a20652c0cbb9d2067529b1787e97448f001de2ae48334a. 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/QM99V2209406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x169d0db54c7e595ed10579688ab992d6f24a6050f8b0f4c6f3a38cbb68329ffc. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:20:52Z), 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/QZNWY2331830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x600a0cf6d41fd5359b5436879aeb7de504743621a7e8767cebeb5133c25c4cb6. 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/QZNWU2363914.
V​/​A IC YEAR, Vol. 03: A Selection From 2022
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60f057bed1897a57ad793d219b67358d0fcbd8aa1b8650324e15bdde9816635a. 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/QZMEV2163817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x028f3988e7228ba090e40ece436045bd544e67a8c8723310088e525f36605541. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZTPX2374666.