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 0x0f94ea6de5d373affac28ba4689c76c2993368e9cab7eddbe7d46a41266e4f68. 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/65bf63f3-04c4-4827-a8a8-99ebc57d8dc5.json and https://artists.proofprofile.net/proofs/artist/65bf63f3-04c4-4827-a8a8-99ebc57d8dc5.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 0xbe4891e5755a2176e79051c1a7df4cb04d030f6da9a98d17c551bc5530798285. 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/QZ5AB1601448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd38e309259568b7095698eb75d9d6be437be6b02ee62acae5b688365881ba8f9. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/QZ5AB1601451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x850c40f1d66fee6d848f6e98da50b78000dfb49051670cef0955313fb2ff8f69. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/RUA1D1807789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb37859c19b92edf24d653b2cdb6688c2fd371ef1c9816730c968acd4baa560af. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/RUA1D1807785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6a4c1c9eda17d8cd04c6a53829200ce902d078664ec5694e96261038be79380. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:39:37Z), 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/RUA1D1807797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55c74f52ffc0c1594d192f898658c9a7058c5f1fc938d1111849cc782f549cc8. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/RUA1D1807801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb76b946b3432ea5a3ce216ac74756c3f38f2fd7dde93b73ecc01bd1ea90f2c7e. 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/RUA1D1807803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d78dc3bb4793f1401e4b8c468da49f054e7cba3293e64cc5805ff08d8c2a467. 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/RUA582102193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16aca01ba1d5fdd75a85a0c57fc6fb145b80582c4f97fcf4206aa390957f1472. 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/RUA582102708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43d1b2fa4f57ca05d9bdec90c8d25fb9f330a049c29cefeac9705000117a5539. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/RUA582102711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbc00786779744cb97f09195dc397043df2cb730a4aec4c22a9f74f9690381d4. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/RUA582102712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0fec7ac31400367080d33aa4b602cfdeaacd1d20c57cec4506487b6b5457d31. 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/RUA582102713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5fb7a41a591eaa1c953e8bffdab47340c00dd69427dd8cee30c811a526da9eb. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/RUA582102714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e42334944db31458df31c40759e724072eb5337b4291a7fa89b0d66b7759a85. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-17T00:09:40Z), 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/RUA582102715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x657a3688187615bfc3e3a9a70bab2155c117f807ae68630b0f80e750ba4c858a. Chain 2 (Bitcoin): anchored in block 958523 (2026-07-18T08:54:12Z), 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/RUA582102716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82b755eb46c526fac999ace97b24177d75eecf8e480a1a50c87aa5161c65ba93. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/FRX201981558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fc64a218d6a1a13979e9fcde923fce416ab4f5b80abe9313d62e281e18631cc. 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/FRX201981566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf68fd3d3a4afcbfe0f0290dac7cad8ba3f0b8d8f09842b852c0556612088c34d. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:27:35Z), 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/FRX201981568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36907c5b9c8261cc96705537ea7a83d3d0e79a220e7f05e89761cfbf71c3a1d7. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/FRX452051895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4735358cdce45f432bbad494adcded46de699195086490c5c452d74a68b5d90. 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/FRX452090543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e57a51bb508a316e886b8a6b43c6d695b35fb78e21d7e78d35541d9dc77fc19. 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/FR26V2018330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf36c9a13692c84846a7c7cd75e81e5a8aba3c6d9448a4bddbe764e420f922f8. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/FR26V2018331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd33f489813984918939781e2a48b2b1fc3065bbbbd04af89c66711ae0a4810c. 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/FR26V2018335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1af1ba32bb7eb116b5d76d293669bca06ac7d2e24b95205948f11e287c6b0dcd. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-17T01:02:17Z), 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/FR59R2108017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc30fe1f38b9cfd1e80ef648b9aacb2721f4139b9c52268290c4bfecc25797631. 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/FRX452141591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda688738e360a3728eb1169e1e77db72a2952110fdc72c1db55e36146ea1a308. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:40:55Z), 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/FRX872154620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6ab0b3502f74f3f3163b6a4d49c62b592d24e3a0d126e5a00d4b416555cccee. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T08:02:29Z), 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/FRX872154623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfea690d9ee42b07338b0b939b93c0e51c3ab4c73be25844416d104bc9eaeea7b. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-16T01:18:13Z), 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/DGA082357236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd01c49a27b305bbfcea800fcf99ec2e7519e14836ad5824ac17ac7bd00d3965c. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/DGA052482097.
Алматинский джаз, Vol. 3 (Instrumental Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6418cc80bcd59439a00c5be576919bf1ab1176ec448aeee5ea970fa61a39af4. 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/FRX872563659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53bbdf66a90d98e2193ff5bc4cc243a3b8a0601f39f104567e0a44da044b6f8c. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T14:08:38Z), 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/FRX872563660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x454e49dd8fda7c561c7f287ade266e776b6fcc5abdf46aa6647d11a18985a409. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T15:19:46Z), 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/FRX872563662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76e844386ccf37dfcedcb93cb02d979ccae7eca7474530d0691e88d361600277. 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/FRX872563664.