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 0xc630f884e653a1113d903d67708c4fe8cc7f44966d52aff93b8fbf1a0b3daa6c. 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/e6f9b43c-85bb-4c82-8e7a-97ae5ab0d1bf.json and https://artists.proofprofile.net/proofs/artist/e6f9b43c-85bb-4c82-8e7a-97ae5ab0d1bf.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 0x3abe780429f7ebf0fd7ab5428844075a0e9a21bf04c43d157f0e4c04a29fff80. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/GXESV2435955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b9ae09a6b2298cca599d1f43100c84c50c433ce143ef5b6266aa93a11ef4778. Chain 2 (Bitcoin): anchored in block 959096 (2026-07-22T06:36:00Z), 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/GXBDT2489947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a175bdd8f50bc75a67be6e82f7e9dbf0d5062d745ae63d384d308e80a15bc98. 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/GX89G2445544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77a52d370a4e749714e34e544635195145aca7faf55ac70b010307c2b39328ee. Chain 2 (Bitcoin): anchored in block 957587 (2026-07-11T16:48:26Z), 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/GXF972419985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x014164b4f1f07a365910437d1df92670f34f3f79627fbb07be51b8fe5ad5fc88. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/GXF972497274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9bc45a27fb9f2f0b3e87a4d03b2c02857f8313f805869dc59fde8a05988f5a9. Chain 2 (Bitcoin): anchored in block 959065 (2026-07-22T00:48:27Z), 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/GXF972497479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68e26695bec796891991029debf3f1bc5d743ecd222173c8b5154e20a1a19cb5. Chain 2 (Bitcoin): anchored in block 957587 (2026-07-11T16:48:26Z), 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/GXFHP2453209.
Somebody That I Used To Know (Lo-Fi Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fde1e2fb0618a6c49488b273f03e37b2b98e39d647454f9aeda173900877d3b. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/GXFHP2472625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe438e5e095f90460c12cae84ed704c3e6f8be933b944d7eb6a5144705b1cf222. Chain 2 (Bitcoin): anchored in block 957591 (2026-07-11T17:21:30Z), 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/GXFHP2449384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x759be5d9863dbb79a0a7e599dbd31387adfd6c27efeab2d7848407c49224f44c. 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/GXFHP2401268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7adeb7dcf00f7343c8f5cdd9dac883b1bd6d03f23a33783135471e9b951aa311. Chain 2 (Bitcoin): anchored in block 957591 (2026-07-11T17:21:30Z), 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/GX8LD2589961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd42506105b1b7b284e557ad3f0e354030a468d168822f6565950c6318bdf82e. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/GX8LE2568315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e9f5c0f5f921bed614076c69d3c3119dfff41cf688242d59b1d317e9aaafd25. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T19:08:57Z), 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/GX8LE2541698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0777cc9c56fca78aaf51c6892578fcc9fc07e1ee528f4aaab35335567007cce7. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/GX8LE2564569.
In And Out Of Love - but it's slowed and muffled
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27914c95b0ac92eeb8d0358ee697a3c736eda9d4cdeeb09308266861897865b5. Chain 2 (Bitcoin): anchored in block 959096 (2026-07-22T03:48:36Z), 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/GX8LE2586356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe935f80957fe3db924cc8f7cd12bde90fe9b10162c78cc1a5a178201e76308d8. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/GX38U2524129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc098c4339e60e04462c5cb929ace543b9bceb2c31655bec2d992baeff4005148. 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/GX4R52574667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7eb12315563b0acc9d4b9b64ea0d8b913e3b7b27e503dec9a6dd74fcaabc572e. 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/GX3HH2580484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x878901471f9336cda64dfc46e7af1590ae98e456b8db335aded1f8cb735229ec. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:37:42Z), 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/GX3HH2522000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e12b65e08655485f1c009ca1be1ec778496b08420071e320d4bce50487bb2de. 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/GX4R52588584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dde84471755f2c5252fdd4ddb10734270fdde1774e4640d08c52a065cfeb3c2. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/GXBDS2573459.
Boulevard of Broken Dreams (Lo-Fi Remix)