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 0x35f4c7fe160fa3ba7c06c6e4b0dd3be24da31d0767a9646538a7420b4bc87db2. 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/caaf6ca2-b971-4ce1-aefc-5e99196db999.json and https://artists.proofprofile.net/proofs/artist/caaf6ca2-b971-4ce1-aefc-5e99196db999.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 0x41bee50f1848dfcbf760dbac40b0e141efe2172b1a7556a4ec49baeb7aab585a. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/CAV8B1500016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab756e5a222da61fa45261bb5e07ae735b75526c5c9135e9808ed87e4a50110f. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/TCADA1793571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x623b2d6da728e932cee6f9799b294fcbb83da29a5e53dd39ab2c5c991f23965a. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:09:48Z), 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/TCADC1755360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe418e41e56a4b3abbedda7715a1a3c04de743327354aa042b30cbcb4ab3c1317. 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/TCADO1853417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbbdb849e08fd8ee9c40892d25e4e367ce89e01153016992c52c2677ad62aa39. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:47:37Z), 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/TCADO1853419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51ce8a5584f8bfd426fae6152775589024932633d864ac0633af2e35a3f57c0c. 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/TCADO1853427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19df627c4203246948d6d6ef4d55ca36e28f5c6e9460bc1468f50ea57657d6ba. 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/TCADO1853440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e8b9c39876e768035ebc6804904f42e081986ee460e7912668e7df569a4fe72. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/TCADO1853451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb11d4c0ebd978d3a32f63db4e7bb3cda8df5b350807af4293d410cfeeb8e3523. 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/TCADQ1894909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x003ebc07f89d9972f2287d02242d15e7aab2acd1f5c39e4c61deaf4c3d0b9aba. 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/TCAEJ1978527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62be7f4a98d79a0354deaa0b0913fab312985ee49437d4a8ea1d7ec6375cff61. 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/TCAEJ1978572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1bcadfc2d6992c6c51df970f77ead453d41e2429e6cc07eca46b2b126e30c5d. Chain 2 (Bitcoin): anchored in block 959002 (2026-07-21T13:44:43Z), 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/QZD442000475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a2c2de13beb8292777b183bca1aa974e6e4949e9f3d3238b2b5665d27f95c69. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T06:54:34Z), 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/TCAFB2028349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2290a8df7ec1698d812f2674f7629b9f5cc5b10a00f2088d200d2bac9c572b0. Chain 2 (Bitcoin): anchored in block 957541 (2026-07-11T08:23:18Z), 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/TCAFH2004694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd79f74dc66fc961f06e93ceac6c033cff77e14f4a1d5adcb90e1b378c29bdec0. 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/TCAFL2198916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e12440072ef0f6239be2d62ec46c308e9fd81e66c564731aa06e81a9f0f1f31. 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/TCAFO2106602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe34da0253de12b43c611ffab629426ae5a194ba926423c5618330a86f28d7c0b. 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/TCAFP2119091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb222ab39be433cea07db6eb09e31796cb48ff88c7a787c51429fbe905aa00e5. 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/TCAFZ2274270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed68951680578418d250bedddd97ff11e90c4320671ce0d29b653d241a0fe516. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/TCAGO2206993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd800126e37693d2bec5f2d8a9fd574c803aae0ebd1f188df42e4c6986fcf1d15. 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/TCAGO2206999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5669d506ab523bb6d34299240203681766376deea484b0f1e19a33f78952c35b. 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/TCAGO2207085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b7726dd500b99a0e5cffc69bde63307282e0fd6d3dfde1d59d47c5955ac0804. Chain 2 (Bitcoin): anchored in block 958197 (2026-07-15T23:15:26Z), 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/TCAGO2207112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f282782757be45212f2ecdb655bd89ada0a73993cba5c079013110f48ac119f. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/TCAGO2207148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa81aba39bbb11967f7186ef1540934bbb4a465f8d604ee6cd9b42a97e2f83498. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/TCAGO2207169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c53c3d90caed5d79b7ec4bfe3b9d1d378c9474161bc00017c1f7014f0333c16. 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/TCAHA2347189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa21909325fccaf909c4750c63a1a81f45318a886626ce877b9e2fc0a13e48793. 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/TCAHG2366059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5375394e25e143fc1fd56a0c9093b394cafd36e6cfe3d7b9ff9905acfa186b10. 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/TCAHG2367776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6bd796a9e36a367e42c8e16a11ebdd292d930de21d73d55a9fc0240e14dded0. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/NLRD52223544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0c25d18fd21207ec479b3e5a696bb78a275412338e81f925c5756ad6eee1984. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T18:44:57Z), 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/NLRD52409769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x993cb7abba16f20ff0b21d3cf436951cddf02a9b33e731fec13aac2650283e49. 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/TCAIK2402716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e94c19bdd8c801f885573a6e87b94991913d0925f14e86db3bdd33ff6db0a6f. Chain 2 (Bitcoin): anchored in block 959091 (2026-07-22T05:22:14Z), 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/TCAIW2472391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebee724e7323ecd620f7beeb17528b07f58b91f01fe49978cd354296583e7ba2. Chain 2 (Bitcoin): anchored in block 958465 (2026-07-18T00:04:42Z), 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/TCAIW2472425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb130bc31ca5e2ac9330505513ae5c7f7be2b7d466e87e3cd6edcea9e803b33f. 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/TCAIW2472478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71597e402ce80921ebdf4bd17d52728052dc961ffb76362834e5aae4bec93fe3. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:26:45Z), 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/TCAIW2472524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4afbe885c5a7b9b118345df1f58a4e370dad27479b022baf8b967f5bb97fd88. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T09:44:12Z), 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/TCAIW2472541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25c67ae6855f46d7ec93d8513e9a84552e3b05495639fcbb1c916c31f1e76030. 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/TCAIW2472556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3527e5e1a2487f64509b31e5f6fecbe492f49537f48eebda17cde1f44acdca0f. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T18:49:03Z), 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/TCAIW2472579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7eb4ab6b084c921868d27502aef68be7db1e8ac75953eef0d10fa21247d02e1c. 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/TCAIW2472593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddaf8cc9de759521b1dc0cc82a8bf91dcfc16e2cfd5fdfda1040a265f5990b04. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/TCAIW2472616.