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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17ac33a3903d81e3c38c240d79db3a20cf0dd6e11ff710b46df9aa6251c80fa4. 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/89fd962f-b40e-4daf-90c3-06fadc9ca543.json and https://artists.proofprofile.net/proofs/artist/89fd962f-b40e-4daf-90c3-06fadc9ca543.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4d27b8e080a06db2b4c10a231409315dd99226c2dbe48bcaff041d6bf5352df. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/FR2Y01000004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac57134f74a04da892e75683036d2da9faa7cbec885d21ac661e10f6b408bc05. 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/FR2Y01000007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x993f28573e18684dbffe3f6fadbbb42417f0529ae411fdc2c506212d53755687. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/FR2Y01000010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x568eae5cfc60d327654d7dec9412454685e0f89a1403992e4bd9ff5dcc38638b. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/FR2Y01000011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13629db0addd763d290d6ceb93c6eff6ec9e8bb793c6dd72a3c5c682a2a7da37. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T09:14:08Z), 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/FR2Y01000012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee87684cd65e87dbecc6a7e389d70b0c3f5d2bc3d0127faf1d23845bd6f04b4b. 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/FR6V82010664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8f92427948beed43eb9776864629f7ca7157f0dbfa48a40a323f317995e735e. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T10:04:40Z), 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/FR6V82010666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d88c010b622e7589e513f3dccff524e01a0dbd538a475eb7a03b3f8f42dfc01. 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/FR6V82010670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38f051cfaf800fb74cbc9f45db18b0a5953d9ed6c37b0dcc7a9485cd47d23724. 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/FR6V82010671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1686567e66a318a2cdce56e89b38cdcc871bf65170f6e71ba60aa30887b15cc9. Chain 2 (Bitcoin): anchored in block 957866 (2026-07-13T14:54:25Z), 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/FR6V82010673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef6b2443fb82aa8ef6431b1b34c4a7faed0dc04710a5f7173a2d67375ff619b8. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/FR2Y01300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b2a1e3c25674b877bc7e1ba96f76343b0e1094631f1ca4c4fd473a33f5de822. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T10:57:35Z), 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/FR9V01500023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75680969e002d5428cad05c21978af7da03d606e773b36e3c4ba1e70c90b4790. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/FR2Y01000009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25d722a49593a7620c8409487f74f18c0275977356be047bac85797148a7d33d. 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/FR2Y01600006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5343c8deac9b19e559fe5df4d3b4065aaad440ef1b1e2f75bec5f5baaace148. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T04:29:18Z), 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/FR2Y01600005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09a5862fabf6866045b57049319f1cfc2d782c7b9be628065ebca784c8218673. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/FR2Y01600003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25d722a49593a7620c8409487f74f18c0275977356be047bac85797148a7d33d. 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/FR2Y01600006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ed51c2572ca943329b00d04896df41286a853ba42c5f4bd7f1b49cc4db594ec. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/FR2Y01600009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x530689298db0e426ff7f823c8f3bb056980cc32806992c78fdfff5af3e809955. 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/FRX201856279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2e06e4a2a36c31317f12330c73a3ae4127b0d00b70b8bfd6cbbf9f4f91b840f. 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/FRX201856281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf900619ade8657e64fbde86567e3b4dad1aac38a35f540de57634fc980967a44. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/FRX201856285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e5421accdbcf252c5063ea4d0602f964bd6a614c55389171f006f288ca7e8a4. 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/FRX201856287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1335e856c63a3542e5885a60e675f8cc2251d9819ab1ea7dc846fa54b8954f6c. Chain 2 (Bitcoin): anchored in block 958988 (2026-07-21T09:08:06Z), 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/FRX201856289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0ac8e9e2321933fe2bdb8b2b316ba222f797f63a756e4e30d989f09ee97e008. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/FRX452011606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0da763a8845892a6a91142523942f181e307e33c32fcf41fa2bb5523697ef14f. 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/FR6F31927260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cc287e1aa156fb6c98e63b371765741f997924bfc400d671750f0c528422ff8. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/FRS182153663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcad4fde03e3fc8940c84086df012bbef8095c7aed9d971d33907ec99cff4d751. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/FRS182153668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0ac8e9e2321933fe2bdb8b2b316ba222f797f63a756e4e30d989f09ee97e008. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T10:57:35Z), 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/FRX452011606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb332613b737729f9ce6a08894bcd8d9c716517b89d4d0ed4b8d575731d3e1c2. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), 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/GBJCN2225001.
Electro Swing 8 by Bart&Baker: The Best Electronic Jazz Swing Music Selection (with Jazz Radio)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7222062564a98b45c12e56e654e928d74896d9bc7e81e8b83f6a157c34408549. Chain 2 (Bitcoin): anchored in block 960179 (2026-07-30T00:39:11Z), 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/FR6F31532220.
Electro Swing Party by Bart&Baker, Vol.1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec64f3731fb3f03e39c56f0224994e52bb4299063fd62234fe500868d2e1c169. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/FR2Y01800020.