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 0x82b300ea378389901f967cb6e0b257e7fe91ff728bbd7bcd752d4ee11e93d72c. 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/2c09360a-3be6-47e8-ba1d-62119550b10c.json and https://artists.proofprofile.net/proofs/artist/2c09360a-3be6-47e8-ba1d-62119550b10c.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 0xfd2422012ad48990856d86e6139a46c836d8684116cfc8969b28e5427af4eb96. 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/USHM91222551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c7b920f029864a0546e25e6011b6d016b0edc56476f3269d3ce111271d8f426. 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/USHM91222552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x847aa1cb0737ebb2e15db00f89f4dfb9c545767bb738e99d0bf1d68b22d11dc1. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/USHM91222553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e90816238c02a28c076be7b008ba0adc5ad9a847f7bc5b933665671b31cc5ab. 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/USHM91222554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2143cdf49138c6c6c9c7350218ef9d4661ea1aed883b5df979b68af6126f10d6. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/USHM91222555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfa3a059221ceecde395b4da14190b36e56b045318c111e8b0d339d21b7ec30c. 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/USHM91222556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8059da80b32533451ad10c8551d69efabb6d40c765aa83a2986681ae6f51e3f9. 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/USHM91222557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x610b6f9e2eb984f9b21402b1bbc8e0b74f924757b59aa6ef446ffb6ddc71a4e6. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/USHM91222558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc6afd110dab732299af129d7c74ea9c7ded5f57ee45a5915795bfd59f43dba6. 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/USHM91222559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c2a28532b0c7691f19d4cf4aa2fc33c66deb8a556608ef38d17018e2680dd0a. 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/USHM91222560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcccc68f17c126520f55611b745765c783d86d6de284aceaa1d7fc080765745de. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/USHM91222561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c51db24a6a7b5ca62ee0f81b52f7149f13658d02425b301058e4273f7d99845. 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/USHM91222563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7285a26a868504db4fcf64bb0a03a06f609d31e7259d77ce2334b0400b4c5b92. Chain 2 (Bitcoin): anchored in block 960352 (2026-07-31T05:48:30Z), 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/US38L0704084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec6921439f689acf51cc6b674aa62c45044fdcfef06d17033d1f528a82fabb5a. 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/US38L0704085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd218e3768e4ae871d5324d5eae5baf936f04463eff82e18c301cef332a070c48. 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/US38L0704086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1d328020a1979d2aa2daf990fa95da9e71447cb37291c2dc68c7a191d98969e. 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/US38L0704087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b4f0824d6f67cf1fd8cad64d957b4d3e26706e6868389c48fdfab57289cdaca. 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/US38L0704088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed27a94937c0b1ebaf64c64fb3c40d932a755d40f24639ce6d95c3a3e2f79d52. 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/US38L0704089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc72c515a00c441a2c866a2403819f49dc0eff159e6b39cde32ae8aeb321f8716. 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/US38L0704091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec42a0d75d8597c07439b097584312506a8e67f94de7d4646cf58af92e6bf3fc. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/US38L0704092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95c2b6d82ccfb82c84f5ee93133365ed8d866c4d9053848734093f159ba8d341. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/US38L0704094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2518c5b4d1e6cd8c55126ed89b0e98380b556faaa6dc4f16a5ce2e56c6217c3e. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/US38L0704095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5c55da58abf9f66a40b53c2501ec112ea30035dba6322c139bceb3b03274be5. 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/US38L0704096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b043e10417c931d4da03280c83769f7787439c00904683f66f78bbf19ae3467. 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/US38L0704097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f0f2770cb47342b15b0d88ae2582072080c04cba36c6c75cec6f031dfeb279a. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/US38L0704098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab44edaab93f7d83494e48d2cab24e8716176b0b7eef7c270b2d42a9335b93b5. 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/USHM21559109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dcf39374a7f1794fec6fe8176c1f317be878f493608be4223c3d97214c2fa13. 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/USDY41597149.
God of Waar (feat. K.A.B.O.S.H., Tech N9ne & Krizz Kaliko)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb453ef9666807d979ea39c3ae2c8ec7e56ad37635dfdb9f565f5dab6283c5ca7. 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/USHM91229026.