thumb|Saccharum officinarum Sugarcane or sugar cane is a species of tall, perennial grass (in the genus Saccharum, tribe Andropogoneae) that is used for sugar production. The plants are 2–7 m (6–20 f
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 0x573c34a0d98866dc64878f83568b432f3ac642baf742a5c34ca37a52b2cfd180. 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/5a1fd2b5-7456-476a-8298-a5b203906d0a.json and https://artists.proofprofile.net/proofs/artist/5a1fd2b5-7456-476a-8298-a5b203906d0a.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 0xe8085e44ad5b1030c8ca0ef8ad317c26bf81beffeb61b5fe7f2b20a4bb154fca. 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/PHW012400199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda7c154c4d3ba78829319030d53c3a50ab4d0e87b70cd2326135761650751250. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/PHW012400148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a9b29bd9dee91b76d2dbfd90919f4b5204a621213e36694cbefb16bceae4802. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/PHW012400063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a9b29bd9dee91b76d2dbfd90919f4b5204a621213e36694cbefb16bceae4802. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/PHW012400063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18cf9d7aeaca9e8e150fb8357ebd7f9043ebca94f0bc28be6a959d9edc486933. 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/PHW012300403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf350c76368274d0aca4c75c1014cd0e3051530fc00b83cfdb0d87f3acc7a0c1b. 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/PHW012300323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95a7c903fc3e9101e79ad382aa6d71c83cd05b1935e67ef4e2649480da58a416. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/PHW012300082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46f5fb2ff059a894fc63e8ca3e6368f7a5eeb20ae1abd9c99e73279c558b8df9. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/PHW012300077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46f5fb2ff059a894fc63e8ca3e6368f7a5eeb20ae1abd9c99e73279c558b8df9. 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/PHW012300077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc09ab3f89d827f9f91a62fa0d49a5c63fb9c68661fb83e939a5440d6442268f. 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/PHW012200129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b4670c4b82f323198efb0a0bdb5aa949ef0ee54e2671e5980d938f4531ba059. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZK6L2143475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x177c6c5cbb9b1e92ef82db4a3bb5435defe045b3878e70707b7ab3db9d6bc6c8. 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/QZFZ52177696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b69b22f8a0a3e51b3852cd38b0217837893495f2e0e2cfa0eb777903ae9e34e. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZNWX2016807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34d47ca22b2c125e89f649f658648d30044882fad8a009d95fca5e129fd23054. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZHN82095129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dfc473eb60cb125a488523fc5cbc172b115f84c0ae85306f31173a8ff1c2462. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZFYZ2031722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7729c5a14e74eda3f87bf46ae139533fc5e5ca4b9d6404883e4f85719074cda7. 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/QZFZ31973370.
Warner Music Philippines 30th Anniversary
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50e5808c26ea7126eac145ba051dadd0f273c0863789bad72a5f08fa2e5932a1. 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/PHW012300359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe6b24cd639e96cb30612a070bbde086f353356be9d72163c114241d4c1d5a7f. 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/PHW012300379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68e744e9b3ca4b794dc0ed87761decfe0e1be928108b63d0078c218f558cd986. 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/PHW012300241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15d469dc742942dbe3cad4546c3548f4ffd6763425b8343a9480f205a610415a. 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/PHW012300382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16344cfbb5eba097f3bebabe18650f255957c41f064274ecb50084f71bd48dd5. 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/PHW012300424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18cf9d7aeaca9e8e150fb8357ebd7f9043ebca94f0bc28be6a959d9edc486933. 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/PHW012300403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x980c2479b16867aa3e91ac5f593755088b6c0aef13b53046c80832ce0f126fa8. 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/USWB12101521.