upright=1.35|thumb|Sand dunes in the Idehan Ubari, Libya thumb|Depiction of sands: glass, dune, quartz, volcanic, biogenic coral, pink coral,volcanic, garnet, olivine.Samples are from the Gobi Desert,
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 0xdfe01a3d2c66134b182c866dbcc4a15c9dfb2926ea2cb88645801f68b764d6a1. Chain 2 (Bitcoin): anchored in block 953654 (2026-06-14T16:26:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4a81bd29-837b-4f9e-b3a6-6deaab84d154.json and https://artists.proofprofile.net/proofs/artist/4a81bd29-837b-4f9e-b3a6-6deaab84d154.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 0xd5af97f030c834d632ec19b22a03c19a03bd00e33e3776fa1933f648f162225a. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/JPH201500057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x842c8e5d34cad62c85ad87efb2f1fc6b34e87ea3ff9f2948a11cf88c920007b7. 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/JPH201500058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5726f7f9d7ebb81ae8eaa956da699784b35379872e595fcc5e144b2717a18957. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/JPH201500059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09e45e737bb91ceb0be192e4a21bdfbc46e31f0a94b19149ad9a22846b9bc062. 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/JPH201500061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x480455330d42c8eb9e98e71e371531447997c8267177fff90a66aa849618e325. 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/JPH201500064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fd4e9223a29bd68d9503ff2d0adcb497efc3ef5b642b042ecedb1643564be05. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/JPH201500060.
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 0x06d8f3016fc73184cc497e55fd5c8dcb10f1827ce55d6adf1512b011d2514d07. Chain 2 (Bitcoin): anchored in block 960101 (2026-07-29T11:46:30Z), 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/JPH201500062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfa3d049ab54430143d2bbbfeb1455e537626c17f53f8f14e6e18991d30f5001. Chain 2 (Bitcoin): anchored in block 960276 (2026-07-30T16:01:17Z), 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/JPH201500066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f6b5c7bb4e955a30a0f3a7b0c29648d339fa432a62a5d8c0a08ce03f9b20c63. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/JPH201300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21261ba11ba73abf83149cceebfdc13ffc412277ef2a60576142c1ddaf3ce15e. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/JPH201300002.
Who Cares feat.SENTA from NUMB,H8MONGER from DOGGY HOOD$
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca5203abf12784073064fb58e4460fb1f90a28b24534c135496bad639c5abe50. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/JPH201300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x243957af720fd7679cfb5f32a6275b5f07aa2c7c6c08a1236fffe4478d9b9b0e. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/JPH201300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cf9a916707f86b1dd8983272dde881ebd82792133c7d04c5a37b7789f51cd4b. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/JPH201300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbfd89e6b37d619c3a195377d0f7087617bcf2ff5346819d656e60e6bcaaeee4. 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/JPH201300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddc836a684b9df6267e479715c707bf77afd72f351e4180972941eda555194c7. 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/JPH201300008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16a51e25f640b0f824e2d2de1b0a6de74489575c5f8e1f487ea664f165049301. Chain 2 (Bitcoin): anchored in block 960191 (2026-07-30T01:51:26Z), 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/JPH201300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf024530cab62955c78a116f10a459fb6464960a49155f3ad54a7c8089d154850. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/JPH201300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bf4760917e9702d6888f1773e4525970e5b17b0f4643a44bc3659479afc9f77. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/JPH201300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c018dc5452dc79f36c07cefa6e26e491d1b69eeb058d5a66aec356dc7d7ffb2. Chain 2 (Bitcoin): anchored in block 960113 (2026-07-29T13:38:16Z), 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/JPH201300011.