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 0xab7347ad01a7ecb9cdea5d0b21a6ae04f35df7c455c4b69da0ab752ca14099b7. 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/21867064-bc95-4ede-bb8d-c0dfadce2cfc.json and https://artists.proofprofile.net/proofs/artist/21867064-bc95-4ede-bb8d-c0dfadce2cfc.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 0x681ac0da322d09069b57bb056eb3c23e9e107446f442ea45cb84e203d6426d41. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZFZ22079684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc37bc9f182e12d6aea1c574ec4599ac1c7d189cb807a89ca8b09b870a45d2061. 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/QZFZ22079689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ddd3bc4860c73a47c64d38acb2f6ec8b8eaf2ef14b7e8db192a50b7543b489b. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/QZFZ22079690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa64f6c3ea66c6abbef0f0f8ea02079c50018a066c67f2894d40886694b47a483. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/QZK6M2092431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5d59711a8bf8c8d11a9285fe44e64f5ec832f540323aefd897d51dd063cf1f5. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:22:20Z), 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/QZNWT2006661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x818fa87d9bf8346a3c0c2e575157689de141037aa7aa7074eea72e5bbf54f420. 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/QZNWT2006663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x098919eac56e94abb17b1df189252d79725b8ae3d19ed073beb04fa7ca235257. 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/QZK6L2397226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfacc24f137673f5074b1b6195a961584fec1ab4e7becfe93935c7c400b310988. 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/QZMEM2399259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x123d1c5ba94caea117d96f4359e6208b2e9127f7362ef10b8efb2c9120f9d721. 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/QZPLS2024841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a5ec11137a176e4644806c73ee93073c51d8b053d9d9b67c9882ac0f131c515. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/QZMER2181137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9aef546c2b36ab8d746a54b1383093fbe5bbd40fafedfdbc0fd04972f22ab9b. Chain 2 (Bitcoin): anchored in block 956383 (2026-07-02T18:11:59Z), 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/QZFZ32266526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd03c902ce8b2dd5ea4c790dbda640ee6c6b995e8531a472c93328949efaad7ae. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:22:10Z), 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/QZHN92208278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51d9ffed0b65cf4d279fcb38f892eddf42bd4f021fba1acbf89cab36d29469d9. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZTB62221338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf79461b15dbb5a1defbb885d639a51b459c0aee618864afb7479a89302eef5d. 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/QZNWR2297702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9529e2670dbb55352c5246d97b2bdea2a110c9c1e51a942d9f1592bfddec1de. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZNWR2297703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1663e56c529d87b69ca0c9b88f7289cb4071cffbee8913ce90cdd63ef8dfb9fe. 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/QZNWR2297705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99c35155ff0fe7988c19a568ef03b7f937d30fcfbcc200b1978f424a1803772b. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/QZNWS2273605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d1a63876d3e4bc4211d4ea67e328219e4db2ddb4a1326133645c82932ac568d. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:16:54Z), 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/QZMEM2355366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe148f1824da6e47d3e41b009e26f1df46ec5b5e79c86824d25daddd01d824208. 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/QZNWX2348135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x566256d34bc78bb25cc59c18248dff01c333532451b0d55005e73304cf219ccc. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZNWX2348136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02d5c10ef191fb0995383aac7f70f53c7e83e03aef14006f902a49d7e861a35e. 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/QZES52435842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x805b3ae24512d1fd1a26b343eb6d495aa97c5ea407fd9db7c3fa46703e9326f0. 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/QZHN42477531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8504d09db20e3030afbe2bee1256fc2f5cb8bf7ff4824770ab4df14a99c88397. 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/QZHN42477532.
Hollywood Freestyle (Papatracks #13) [feat. Nicz]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x726449ad3096960946494b684ef1899ca7d8ff126d9b22f4fce89fb2e65a42ee. 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/QZK6K2420753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9621f119248880957365daa26c3b699f648a1800e0923a0912fb266155a4aff. Chain 2 (Bitcoin): anchored in block 956383 (2026-07-02T18:11:59Z), 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/TCAIS2462414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x189fe43eb8c0a01027b6c2fa3eddc5d1cfa0d93fea50cd1b6ce6bdab8032d962. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:02:01Z), 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/TCAJD2413230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ff2ea21be8c961bfe181938ccb98506919114f66b15de3336b632bc29c98f3b. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZFZ42520511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8caaacdf8c8d021375ccb2bfe6ebad8e16e60c2347a4cffe5cc10e94956646bb. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/QZMEQ2563128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16986eef92bbc1fbee800fdae482f3d00bd04b5a5ed4e8d55c312b64f6756c78. 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/BRWMB2200117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x848d447e4dd503d4515d4130a73837cf0987d6c63b50b68e31e7b01270e285f9. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZK6H2428222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa963ba5e8363880ee8b4add3437b9e76a2b4a26686ac47575d1b90036fce7921. 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/USUYG1336467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc81d247c9061f6f09c3d30a20d55bc9d856b6a987ec8fd75ab487e5405ef8095. 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/USUYG1731240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2c4a1eb6439f1ff7a823f780a7987c0fa39a6e88d029eb156b4ba18ac6330bd. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/CA5KR2141924.
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 0xb8266b83977e6bc4b4b246ee9d81ea0bc7811430e4c4614c4054afd2ac071353. Chain 2 (Bitcoin): anchored in block 960222 (2026-07-30T07:48:45Z), 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/USUYG1470059.