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 0x63dea3a32ba43f761ccb3d3a620a5d738d610bfb68a8a04bc1a136106694caa2. 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/52443c6f-fd3b-4d2c-b770-6ea83ad2bdc1.json and https://artists.proofprofile.net/proofs/artist/52443c6f-fd3b-4d2c-b770-6ea83ad2bdc1.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 0xfa49ea8fb54898af8b1c836245f62c101cf934d55e56652ca414a39f8ba0fa40. 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/QZES51984478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1b2f68e40a4f9cd1b69e4b92bae6ed2b1eff094d4735f2e93009b54c253a885. 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/QZNWZ2159941.
Groove In The Face Of Adversity (Radio Edit)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0aa46f2fe03c0faf9880a76f2ec52ae42c89a3f4a8d6f290ec28d6a4ae71df44. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/QZTAS2169147.
Sing About Me, I'm Dying Of Thirst (Lofi Instrumental Version)
Now Sleeps (The Beating Heart) - Instrumental
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x267f570e4e0f8257987e934df617e40d94946a3226a546436343750e2e8e90cb. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/QZTAU2211378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc549472cade4df82ec72d23acdde83e511b0abf8237a408c439c27aed4effac0. 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/QZTB92218520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27e752d61e418f5d862cb72054875e0122ab4399e3d4c50f735b53e4bc089fd4. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-17T00:58:46Z), 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/QZFZ72452979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd31f4d724d66c137f0af4a329047cbe134de0802c833eac29a1fdbab32826997. 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/QZNWW2422834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x656394f6d42cc35291f34a1bafb00241e86f7221dbd60d99aa3ff329f2c20ed8. 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/QZTBA2469868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfecd88ce25554811feb394ccc23555ab61fa83f1d677614a07a75c86294d5b50. 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/QZK6L2462700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4a7376ce78a8d1a5c571c6e12a163ad0847016d484b40d7417208f9939d4249. 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/QZTBA2469869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9542d16f55c2721961ddb07aa1b57b937873477c4a25b0c6e23e6b7837dc535d. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/QZTBA2469870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8e665e5ae340cd8c5bdd3bde572337f0266169cb755e92184dc7ffb38471c80. Chain 2 (Bitcoin): anchored in block 959026 (2026-07-21T15:38:13Z), 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/QZRP52461028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ae2fce0e6ba59cf9363f29846c1d60269cc9f77e1c3139397d7fdf0ca51df35. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/QZTBA2469871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x429b0a0e6a46d6dbd93a601cce4384aa9cb4d702ed8e19b75281944f5f5261b3. 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/QZDA62510379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe134e4523cf9f879077d04f767bfc258f90deeecd2b609650162e6da8c992b1a. 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/QZHNC2570721.