A slum is a derogatory term for a highly populated urban residential area consisting of densely packed housing units of weak build quality and often associated with poverty. The infrastructure in slum
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 0x6a19d0858ab63aef35cf584393d064213aa9aac43c682ab82677195f6c336596. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/73be0b0c-f681-47ca-b733-719bf75bb2fa.json and https://artists.proofprofile.net/proofs/artist/73be0b0c-f681-47ca-b733-719bf75bb2fa.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 0x2daa5e9fd58d2f190c33fc368ae40b4d5a743b4b93522ed9f14923dcf05ba575. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/SEYOK1805096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa368fdc9a18a5c7c1cf0fdd18ca29d09c4f3485ad9a266fccc963fff9a2c9ee9. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T00:27:48Z), 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/SEYOK1809907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc81cf3a4762ddfb2368b4d9bdb7e104eb2eea06275616ad6a3fd5ab55fefb915. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/SEYOK1833429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08463991b3d718454023e8f92193a09ce7207c30b1872bde43545ebb43b04b54. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-17T02:51:02Z), 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/SEYOK1933396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73f056d2ebb9fc0ca093befef8c11d7fa6a217732d1a577e689cb6d34a9c1a38. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T19:06:08Z), 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/SEYOK1933397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4dd61af8f6d47ff86e5db82a8c0610201368d58fd7b731ac82fc486090ca97d. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:39:36Z), 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/SEYOK1933399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x582c9ea8a42bb04b2f4b6907279c89c2baff704b46c28e2196cddae2014e5274. 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/SEYOK1947540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c1275bce52380d9fbf4f9c7548e8645abd2ffcb16a77d7ca9cec92bfec7e062. 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/SEYOK2323738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45d64857d065adeded6451b67fd1c7c37727a9a482470f198133b78abc401b09. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/SEYOK2512680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27e7c9a1fa3523d44472913c107676fc3c0b462f1bcc7678d290fa60f8efaacd. 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/QZFZ72039566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e7889d2703962e4b1325d8714c95a48a4ecf380a88a800ee32220398f34c79b. 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/SE6I32292075.