Cham or CHAM may refer to: Ethnicities and languages Chams, people in Vietnam and Cambodia Cham language, the language of the Cham people Cham script Cham (Unicode block), a block of Unicode charac
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 0xbb59270304d1e706c9a6e91e91f6350e323b9752f7b0f38af1b9ff71ab6a5c51. 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/648a7936-ec7d-4294-ab9f-2acad52f1555.json and https://artists.proofprofile.net/proofs/artist/648a7936-ec7d-4294-ab9f-2acad52f1555.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 0xefcc5763fcfad74bbe7d331bf129e6a1efe06d589b11fce92e7023840ad2c0c9. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USQY50965869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd1549021fdd634e65475208709f92b889e9c16ac20f703734256515aefbe7a7. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/USQY50965882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77b369cb32f3f12f8a7b8e4bde90d9b53eac4de61e8a44dea2c6d5b686e0f069. 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/USQY50965870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d25c9c90bd10eaa7c6e2cdd0380d0aa6ef71c8bde75df904eb7f69ca647993d. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/USQY50965874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4a454520e4e575a5e1fadfc45f4f8ddd049db1560b2747bde8e89a232422498. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T21:09:36Z), 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/USQY50965877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3e2945d96ac7cc7a6031128ebdb989bcbb2cb35b81fecc6fcfd46da7db4b072. Chain 2 (Bitcoin): anchored in block 956861 (2026-07-06T01:57:57Z), 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/USQY50965878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5f709090e42938c6d74eabc21acab3a2327aee1be569f10d2256103f00021fa. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/USAT20400182.
Ghetto Story (Explicit Content U.S. Version)
Ghetto Story Chapter 2 (feat. Alicia Keys)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62e498ea96d998d587724026313b0c47f8d19e7a91650288436446a6b3b7ea6e. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T02:01:41Z), 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/USAT20616314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x856cdea0bc4a247c654bcf76a24cb4a95cc2b610e72aa0a4bc1ff3c730342f74. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/USA2P1284231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dd7f0636b1029a76edbf8aefdc2e5f3e01ec3d34449f9cd22f94f5e710d00ef. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/USA2P1284234.
Fighter (feat. Damian "Junior Gong" Marley) - Street
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf94c1dfc25700225e74d1d0f8c12f408cf4d7fb39284f8ca79dfba9f789280a. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/USA2P1373550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64283016fc0a7e05515379884bda6098698e46db252c3ab913596d26a1a2120b. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T19:27:18Z), 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/USQY51747208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78ffc26485adcfff3c3d40c7f33f68f9977a6bc8063cbdec4061a3b355c8f0f1. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T00:01:46Z), 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/USA2P1536593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ee4685ede9bcb7de24dd08702a67cc06e764553410519e1d7b4266a286aae11. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/JMA272000799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d3613d67926661dae12401c1bef337ced633c716d10fba7ef8a931ad9e54b3f. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QM6N22123326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea0c46bd6248a0bf72dec6ebbe1aefd6014742e0062f6e6663f0b74efb754e94. Chain 2 (Bitcoin): anchored in block 960166 (2026-07-29T23:39:29Z), 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/USA2P2115612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66ee5bceb6ec1d825bd225fb41180848e42cd37d29ff3927d030e9b2f0a31373. 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/USA2P2115611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63706b721f499bcc77f43d5fb799cab11d3eee6732038f0e600d3510600fa14b. 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/QZVEM1875329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa3463eda38e3d183f6385ee7f41bdbc35960ff763bab8988d367bb5bcb9d60e. 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/US7VG2590866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a8bb63be891a617eee06297a059bb27254e9e008644cadecf98f007ba2579dd. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/TCAJV2582408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05dd3dc811fae5733b75442b8510a19f945939d241dda19c3d0f5c76f018a08a. 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/TCAJT2556089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8ac349b316c36bc5ab426c9cc9327fabd67cedd048b3ebcf6ea1573dc668eb6. 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/USCA20601628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2270d357a2243ec360a9918cd99045f7edaa6e6de13d95e2d3f154a54c0f126c. Chain 2 (Bitcoin): anchored in block 957065 (2026-07-07T16:43:21Z), 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/QMCTU1400018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7a62411df5d15cd305d82c8dba06dc95c15e5892957e26b80fa75a110ba164a. 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/USFM90600104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe37352a02b3f1bba1e1c2feb2267727f78b4221d28428414fbf75ce87c0f57c6. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T18:47:29Z), 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/USVPR0208637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75c29014738d94e9cc87c3690349167983b000c37e2b0fdf66ed867d3f03f969. 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/USVPR0208134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd3bfcfbaf939b7e8bc2856b070f328b89185b5c651649e51a58ddf273eba250. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/USVPR0410009.
Ghetto Boy (feat. Cham, Spragga Benz & Bounty Killer)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb961ad096de1c7569a9d98b26111a4c499ad19adfefc67032d813f9aab13f1ae. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/QMCTU1500026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf14cadd8f60ce54e90795c13f796a8854bc978a04a43d2b257eb02d5bc3c40e2. 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/USVPR1200130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x170522c8b3c967bdcc212e2f1ab5b58c5e61ea9564533dfc078a45c4db2435cf. 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/USMC31721300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe49da7de27658e4569b761260cdf4261b60268f02bcb7e2844cb8f912829d8a3. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/USAT20616940.