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 0xe3dd3c51f236a959b2959978760d1c3fa9359f04adee3d7662ca43ed32450268. 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/625ce8fc-78cd-4ea9-ab49-5729bef9f36f.json and https://artists.proofprofile.net/proofs/artist/625ce8fc-78cd-4ea9-ab49-5729bef9f36f.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 0x16c98136828b79ced3f1fab48c406ed7fddf8f5ab6e5d461d6ec992a653967f5. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZTB62282346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9da64a09c3b0ba07ff108101f781bdcdd6de5ea1b4dbedc794c7abc72f1b79b7. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZTB62282347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd374f513eed44b2152079eafe8cc07a9de8fb67ee0fc00f27670cb8073d9dab3. Chain 2 (Bitcoin): anchored in block 958681 (2026-07-19T06:14:54Z), 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/QZTB62282348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d927f05211a23de646b55be7626677c07437cffe1aab3e2469016c85f8923a5. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/QZTAY2222976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c2f55749328e1b73b9dd2ffa89f4a2fdb47c527cce4ee65581ac10722d44c5a. 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/HUA612302726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0545e595fb1301a9a34130deb8001b108691955de418b15eb8bfa91bc51d06c. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/HUA612304047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce1c09dd2df1bbea666667f73e2122fdc6d0c7aa21f66143b1c4fac0961f9307. Chain 2 (Bitcoin): anchored in block 958670 (2026-07-19T05:26:23Z), 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/HUA612304049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd499a1191ae5ba4f15d0ba62ed5a1571c27511e1916a07365560dd2ab86b8f78. Chain 2 (Bitcoin): anchored in block 958667 (2026-07-19T05:04:54Z), 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/HUA612304057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa22903b2befd1944c1dd33b147ddfea48052ee8ccfd8ba4ed70161e27ec405f. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/HUA612303463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda06253e3128d2c2a17b8921ede474287d940dc3c35a511154012074fcf087b0. 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/HUA612403221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bfc9555d9a2693f88a856008dacc7623e7361c07386947d6fbf5c9d61750472. 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/HUA612403397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd83e17882b20ac2fe5586b3b87b43595bc25aee8ee2db68fe17917882bf2562. 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/HUA612403398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6026c2beddc9896bfa76f0ff69531d11f0bd1c0ee7db7bbb4a0477c03d723e43. 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/HUA612403400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda06253e3128d2c2a17b8921ede474287d940dc3c35a511154012074fcf087b0. 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/HUA612403221.
1TEMPÓ / Legendák Ligája freestyle (feat. 4ma)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b053af25c1258aaf11b6b196dca47a45bcc281265a9d4a559d5706c07052a62. 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/HUMAG2300291.