Rosso is the major city of south-western Mauritania and capital of Trarza region. It is situated on the Senegal River at the head of the river zone allowing year-round navigation. The town is 204
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xa577df200c6af5af94d513ef7b088b1b8cef9322b5de15c8b9ac2f2f89c1c623. 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/72a76ff0-fbb5-4625-8028-5d0b908de807.json and https://artists.proofprofile.net/proofs/artist/72a76ff0-fbb5-4625-8028-5d0b908de807.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 → block OTSBitcoinBlock must exist at that height 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 0xf8bc53124f61e6072532762c45834cd63013b27dfdc70fe1e1b54bb20b237325. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/JPCO00208980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x479818eb725f6fc5fcdc4100c13b1b83af43f6bc70d1685bf0b8176130eaf7db. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/JPCO00209000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x800576a4cac8e5ab447813452a9d385e63558676a1feb1ac87d92e0daf7ede11. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/JPCO00209010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde310fdc838147f3553475ecfa40620ac26eeb38077d237ea0bb90e5bcd807e9. Chain 2 (Bitcoin): anchored in block 957611 (2026-07-11T21:33:50Z), 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/JPCO00209020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa745f2b60936acb6b300312f23a1d31eb7195d108ba0602127fe24d239ac2d02. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:11:53Z), 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/JPCO00209040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf3061f19ff7e5af7b6248131bed826b340a3e6fe24662c215f741426a5a3fcd. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/JPCO00209050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1090d94d4fdb7e034669a438d4f961504b300c1788e1297183eb910ebaa0e3f7. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/JPCO00209070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x379e066d78a04c6d6953f378dcdc435e49e91e1fa98d4034e8e4a005c8d7cc26. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/JPPO00426920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76a546c3049172503bc8f6b601f9a68b05e216083122265c091f5548198dd192. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/JPPO00426890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ccb68a8e2b524d3287e3e9c767a2404b32fc1f7d7b453c638d557535bbfa0d6. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/JPPO00426900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x262a8c3f4a8167495ddf2c2496cc9005c035cf57956b18022992f68b2d2355bf. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/JPPO00426910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd880b8550db799f13a2337f92a5f62c0b6a8c504d28e1853eab1b0e5fa437510. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:04:30Z), 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/JPPO00426880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc2500faa47f0577fee7ed92a17b04b390babbe2d5865385a8442ef3a29d1338. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/JPPO00427060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57c85389f7fe71c9a0bdd1e6fd8e8c846f07be132e1e4eee361324c589f56447. Chain 2 (Bitcoin): anchored in block 958680 (2026-07-19T06:04:14Z), 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/JPPO00427080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4d08e648702a6045d2e891f60af46f058de474d84f351f93511b5bbe6066522. Chain 2 (Bitcoin): anchored in block 958476 (2026-07-18T01:26:56Z), 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/JPPO00427100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5734ad7cc0684bf2222a32647e1bb81f48a2d76938871040eb8ffb4e774847a3. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/JPPO00427110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1b1a18c5639e2e80b1b394dffec3183f63c8fbf578712802e3552f45ade961f. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-17T03:01:07Z), 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/JPPO00427130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x029544c45988dd8c8176f37b0ab0c47cc9399bbec42f539800677aefc4d36bd6. 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/JPPO00523520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c93bc448af8e785f9fe7f41a6196bc9da594ff3f19da87ad8910cd4a2ed5787. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:04:11Z), 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/JPPO00523550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcf09c0599c1fde939eec29b34c9a89aa8a0b0a8ea5269700de38e4beb0816a9. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/JPPO00523570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7169a402d6478035e9447de0ee83747f9527e327a47e79cf4499aa8f09674235. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/JPPO00604060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa7e4a35d5a0e349e33e2097c2471e200104160b99696ae616f685fad3502ea0. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/JPPO00604070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0e4068d122500ebe5510a4569df47ccef939127d627e0b8b05033ef07c52cd1. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:20:13Z), 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/JPPO00604090.