thumb|upright=1.2|Advancing monsoon clouds and showers in Aralvaimozhy, near Nagercoil, Tamil Nadu, India thumb|upright=1.2|Monsoon clouds arriving at Port Blair, Andaman, India A monsoon () is tradi
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 0xa91f0f13633a9a8d567deef2ff9b1fd0e32eb1112a1f98d21814b3d8d81b9b11. 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/cc7a0974-4972-43d0-b1b3-6cbfb6982551.json and https://artists.proofprofile.net/proofs/artist/cc7a0974-4972-43d0-b1b3-6cbfb6982551.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 0x302690984d306fce45037928f40718f080be8d6af3e41d7208754cc93a4f631a. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ARF411300286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33c0a458ce4c07671fa0f24fbd6b8c7ff0213a1f4c3d1238be3ecdad70fad84a. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/ARF411200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33c0a458ce4c07671fa0f24fbd6b8c7ff0213a1f4c3d1238be3ecdad70fad84a. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/ARF411200004.
Vintage Café: Lounge & Jazz Blends (Special Selection), Pt. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33c0a458ce4c07671fa0f24fbd6b8c7ff0213a1f4c3d1238be3ecdad70fad84a. 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/ARF411200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x302690984d306fce45037928f40718f080be8d6af3e41d7208754cc93a4f631a. 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/ARF411300286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x302690984d306fce45037928f40718f080be8d6af3e41d7208754cc93a4f631a. 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/ARF411300286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33c0a458ce4c07671fa0f24fbd6b8c7ff0213a1f4c3d1238be3ecdad70fad84a. 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/ARF411200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33c0a458ce4c07671fa0f24fbd6b8c7ff0213a1f4c3d1238be3ecdad70fad84a. 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/ARF411200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33c0a458ce4c07671fa0f24fbd6b8c7ff0213a1f4c3d1238be3ecdad70fad84a. 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/ARF411200004.
Vintage Reggae Café - the Definitive Collection
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x302690984d306fce45037928f40718f080be8d6af3e41d7208754cc93a4f631a. 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/ARF411300286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x302690984d306fce45037928f40718f080be8d6af3e41d7208754cc93a4f631a. 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/ARF411300286.