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 0x4aac2bf210e8682780a7ae1f21b15ce62e9767a4d1686fd4a726c1565b13a3a5. 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/d6de8967-0460-489c-9e67-751b424a7a41.json and https://artists.proofprofile.net/proofs/artist/d6de8967-0460-489c-9e67-751b424a7a41.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 0x6f576dab16a07847cd1a991f30440e5cfe1d3d9095b2b3240a64f8bedd31860d. 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/GBLFP1814627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x145628c1ac2a41efd01d062052c9262194645effd374b92b3d3f347fae556d1d. 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/GBLFP1815771.
Mientras Mas Lejos Estas Mas Cerca Te Siento
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ad3883b333fc3cbd347af625a88cb71f724ee71788029a6560fe1cb53126d87. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/TCAHD2310602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8341c72ffe78a9ea64c72b94fd6f27415a3a4af4e6caea944dbfa34cbd9e48e0. 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/TCAHD2310659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf9ec106a51b606418ac29d8b1e1cde78c14169528a51032c7b5359a81027f3b. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/TCAJJ2521731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x228d0349af5adaab05c85a4e4757204971b84c2d60ae705473756a54b82bccc0. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/TCAJS2564620.
Dancale feat. Bosuman - Eduardo Castillo Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x109e3041268d4322369ec9f693c5085e332bae97c6f85e2700ea1f7fd6875445. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/US83Z1509148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b272c642304fe01d23db11a67b89b5f547dae9fb85d086520235f25e7b2ce91. 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/US83Z1824425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ac3e081759c04ce8785ff50ceecf0bb655b98af0b2494d183713e38b721b022. 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/US83Z1811172.
Here Comes The Sunset Vol. 4 (Compiled By Jose Padilla)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2597d452416f719e09194ff3472cf2b6dfaddcadefa276ccda5c1cb1e5f95c9e. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/DEH741109160.
Day Zero - The Sound of the Mayan Spirit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5ae17a52e2ae01e2ecd92e14620d3576a156621b9fca4055a6a233284464c48. Chain 2 (Bitcoin): anchored in block 960485 (2026-08-01T00:10:46Z), 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/GB7NR1221209.