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 0x1e944afffe3c192b13a86674c7fe3e1ded589a8867f216d9980c2bd087ba164b. Chain 2 (Bitcoin): anchored in block 953714 (2026-06-15T00:43:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/816790de-0f2e-43f3-a17c-c20ed1800140.json and https://artists.proofprofile.net/proofs/artist/816790de-0f2e-43f3-a17c-c20ed1800140.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 0xf0d4a24ef72edda330fb811b625ae920adbabf363c470c3f36b2958225b23cac. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/US83Z2312482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b6a34eb2f5296b60c0437c79c6ed6d6c5949b11f141596ca821c75b7da1b69f. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/US75Z1410056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb64d18cd602f7f0aa328e77ce9ca6c50d10e18f448e8bca326b7f89b379cb704. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/US75Z1410058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe045bd54840f452410dbe7ce763bc3ea2c14c0aa1024447b29f2eeb7146cb9d2. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/US75Z1410057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbb7e4668f52d75a70ff4420420fa7e4ac1ec156674a8ab2d39be48ef3fab0d2. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/US75Z1410059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a7d6f4f23b331712098e1f44bac09b6de9df5a76fc9dd28be09ba9325b434cc. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/US75Z1410061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa1870522e24d5a8ddb390261bfa0934d9c91294030e6f68f3d70ce2e829a284. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/US75Z1410062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffd742162c4c7a4a2a62f2ea1fd6f40d8d0939b615c717001ec9bdae75fb48ad. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/US75Z1410063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70685cd581a64148f3a2bfbfedcc9e83b7081052d947c732062061a6825c20bb. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/US75Z1410064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cd07564f0b000071f7300edc545fbecd9600ca0b19c5da540ad899f9fc6bf27. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GBLV61523962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3351a63da665efe04411e183318884bcbd357da775f2cd65d5b357c73e471df. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/USAQB0670297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x994d5e8b645adaab3bd4324cd2c9bc93051873dcfc9d1e40b9ab3240d021cb3b. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/USAQB0670301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a5549ea184615ffd368a1cb69f4470e6c71047d1eef1e34e020b0051add3304. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/DEY472081246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x652e3e474d70e166e16b1ac87e4fcee3af005c477c864a67da03217d7d421532. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DEY472081248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe45ab2c529ef375024fc5e0c4569253f0a0e117d50cb47ce7169189408cf6ae0. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/GBJAJ1902059.
Heidi Presents Jackathon Jams feat. DJ T. vs Emanuel Satie & Kill Frenzy
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x301f2abf86be1883e276846eea811044fb7eee9bc56826e930a2494de01fea01. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/UK2BS1300062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdca8317bb3683d3f0cd0a9ca3172702614477889c88944ca58606a4b40e69d3c. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/US75Z1310074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8015f3c793c2537a22210d7f6059d96d1d19d63c80b259ba7ca2521a57b4add1. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/US75Z1310075.
Make That Booty Clap (feat. DJ Funk) - The Martin Brothers Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6d481210cec76166f18406999e7918ab7afe9c216b4f558aa390954b750e450. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/US75Z1310052.
Errrybody - Shadow Child & Tom Flynn Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf28e766891bee0336f4f73583c6a51aecc2c8022c3155d61c675c1a91baebab0. Chain 2 (Bitcoin): anchored in block 960170 (2026-07-29T23:52:38Z), 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/GBVU71200013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89d84fe2a9f8bfb852376c0850c368f99d99fbe17045a1e8450abd962d386690. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/US75Z1410028.
Wet Cat (Sooo WET) (feat. Kill Frenzy & Ardalan) - Redlight's Damp Dog Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x340542ff029feed330cb580e622fa1070b341b115e761ac721ff2417cf2d90f5. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBKQU1711516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdc228d083c52a4ea11074e1d1f9183c19fdd063f2dc7de4c8b3c2fc630e8c34. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/US75Z1210120.