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 0xb195e62356672802a41fcd2a0d926d4cfe22b5255cdf2c3222fbc56c8ba92d9f. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2430f849-0e13-4789-8d57-6b8766512177.json and https://artists.proofprofile.net/proofs/artist/2430f849-0e13-4789-8d57-6b8766512177.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 0xed7364aff3d07507588fd3ed365bbe254c445c1a6c081391d9cd429c270bb7b7. 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/ZA9KK1500055.
Reya Mojolong (feat. Dr Malinga & Leon Lee)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e318cf84b70d5fe11ffdef92ce09efcfd166835251abc105553a5bbf81b80ac. 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/ZAZFU2200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe325aaf3587081bbed731a1d1985dc7a221adf6813265b43b192f4e900987fdf. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/ZA9KK2000063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6aacfa02eebf2c507b599ed683507d359c4949687c33b430ef74c323f34f4248. 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/ZA9KK2000065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cda043677027c2d5ef74b9e6aae2c9602271eee48a32b972ed7e2b40eb3e617. 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/ZA9KK2000066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03a22f04041c279dbacf219e585e746d49d3d2175b076725ab93a5ffd9e420e5. 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/ZA9KK2000064.
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 0xf5a55d22f4383fa3b9cddeb99ef58567d49237310bcfa7b7c31ba62b6ca2681f. Chain 2 (Bitcoin): anchored in block 960241 (2026-07-30T09:58:01Z), 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/ZA9KK2000068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd39928e20d44908bce7d642009068ca6097a50dbaf9a0f26f016e40ee322b2b. 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/ZA9KK2000069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05cbb8e9afc2ed693fcdcf1ed2d542dd61460b846db3424ada8388d462a6673a. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/ZA9KK2000070.
Ngiyolala Ngifile (feat. DJ Rtex & Beat Movement)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7f2b7ead907d9342f122aa6b16c07c99c8b0aa5a3251958a0bbdc5a1dbce901. 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/ZA9KK1900064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e9427e936abad19c4b8535ce91b16e6dae19c3552101ec6f9ff76134fda5459. 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/ZA9KK1900065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64484d05ed705a7560ca4e491e6fa15d9d4a061896497af7c1f6d48564235607. Chain 2 (Bitcoin): anchored in block 960164 (2026-07-29T23:23:05Z), 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/ZA9KK1900067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35136770006bbae6d295e56125b91c7f3e61dea754b40640ed1681c707ca8c26. 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/ZA9KK1500009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67cdd9aeaeb8a60f80e06c17f00b8cf4a0a137553ff6dad97ef30c3925c4fce7. 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/ZA9KK1500017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1950db4ef2beb11cc06acddce1a736c9b01c50b5b1eb1188db9d9e6fa2f5c83. 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/ZA9KK1500018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58ff322aeb2a897ce517a7e3dcc920aa0fb69611c0a568f97e15725876dcc7e2. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/ZA9KK1500019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bceab7b3648cd48502a15632d2cdfb6ed76afe4121baaf14e9ecfaa5764deb3. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/ZA9KK1500020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03d4577be32109503ddd0decf8209697a20ff8c2d3c4edc0945fd05e1621a1d4. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/ZA9KK1500011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf895368dad257be3086dc474be687b02b461947bbc651d63ef8a334fcc90a231. Chain 2 (Bitcoin): anchored in block 960277 (2026-07-30T16:10:47Z), 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/ZA9KK1500021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d52fb4e65703be4c4170ee9b2288c46db153f7fcae0a16867cac1afc42ffeed. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/ZA9KK1500010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x934bb4e1c7238f3d581e9152ddf7bd616f2455901a4d4b830a9bd38b182ae222. 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/ZAA641400204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62fc1bb6fce46ec9fce0dbcd975a12d65f35033ab3cbd6a179ed076dd7587567. 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/ZAA641400207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc8f1f39d9cdbd97dfd590467c5798ee94b52b6bf0ba86726e107d683076d544. 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/ZAA641400209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb918258996eee02938478d3a7255295f6a21eac98ae461daf6f9d2298e0beb99. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ZAA641400211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9eae22cccf7015367cf00c122c1d1809183d35272b7607bea15b1726dcf4ad07. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/ZAA641400210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1ec90db4fe12633553941af9f1873b73f7d344aabcd640eedd3bd2b81003e5c. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ZA9KK2300011.
Bokoharam (feat. DJ Rtex, BosPianii, Thabla Soul & Thabo Spirit)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf79c285bf44dd4aa9e8c5d20447676571076a03894193a304365f43fbf7ac6f. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ZA9KK1500050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b383e01d900d5ce06c120ee5a912cae454ceb9d276bbe1873d531f46b9c6ec2. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/ZA9KK2100079.
Nyusi Volume (feat. DJ Tira, DJ Ngamla & DJ Mlungu)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9abcc57f8443fcb8637e0bb2bba667ea5016cebb4b617de16d8c861713741558. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/ZA9KK1500044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x079d17ea0bef02b347fd870b1766d0bb0c497ddf5d00e9fbf3e49b27917a42db. 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/ZA10C1100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x238437622183306dbf236143b4df2c6f292ffac5d79d6520f51e6195239e2747. 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/ZA82Y2100232.
Let it Go (feat. Dr Malinga, Mr Brown & DJ Miscy)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4de022eaec381d3d7b535b299160a7a385de18e1dc6d5a28360e390eeee8a938. 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/ZA82Y2000184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73a2b7bbbf0618c307128dbfbbebfb6e57cacfcbac6feea5449f2fcccf51f475. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/ZA10C1100001.