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 0x8d67f30d71ed1e6e6ea224020638ab9eba54ba0dd2765d77efcaa0a2966451de. 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/468b27aa-631f-463c-9081-6ad7a73851a2.json and https://artists.proofprofile.net/proofs/artist/468b27aa-631f-463c-9081-6ad7a73851a2.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 0xe35210917d84abbb163ef57e45ab271b939596465ab988858819bf3c8131e03f. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/GRSO11200091.
Mestral [Feat. Radio Killer (MX Team Acoustic Version)]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc24c216e26545b08052ef2d8c9f3e1ce7f3d1cb06713085b9d797d7652356bf. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/GRSO11200035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d3a8b0494f287aa21502a3b87909f4e93ad9e16741fd094bc0d6dd9186f1c16. 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/GRFE11400089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeba209db10ff60c2f09f49282bcccf58c163f49705a02d2f24496b147831e7b. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/GRFE11800022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55df41311bb01925934e75ffc8bec2d7f679be0c83d863b49c713f8f23d67381. 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/USHM22114637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43481c790ec5e7d9bfdb4551a08ff7224ee9ab9a672ee6081e1e22f95a4fa011. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/USHM22114643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c14d9c74728cdc1e00681ed30b4ff902d5478ac5f7c797978e52ac7645d3c1c. 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/USCGJ2261034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f5752d4f0e27db370afb02fc94c183500a5539055921f0cc966b1e09bdac85c. 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/USCGJ2352143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c52912f888d9f1b1c7a947c93e1a8644ec997ada605079e8a132cb86311d503. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:48:08Z), 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/TCAIO2436573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98778eb16da2fecb684d91435d38d7c8459272b5c03f22bfce1569088cc8ed58. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/TCAJH2562215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98778eb16da2fecb684d91435d38d7c8459272b5c03f22bfce1569088cc8ed58. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/TCAJH2562215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65ab032ef80c1d1989e5a8482a130454735e9dea14bd0d01b68aec6cd338709c. 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/TCAJH2582413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa892fb7c49e0bd1e02fc7b793128b4fe8f56a7b52dfd2fef3e9299411afb9016. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/US83Z2518920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58d78652445ad8909271564f5ed8596bfc7812dd4529ff960bc83ba08d473a92. 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/IT00D1103602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x141fa265f675cfb4491db152e3743e5decec97d023aaf60d6aade8ba7cfc3790. 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/FR6F31230420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6886c1efb728892334d197a649800b43ce1044761a59bd0ae01bf09ec0e8f985. 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/FR6F31141350.
The Tango Club Night, Vol. 4 (Compiled by DJ Ralph Von Richthoven)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a58c43d2c691f7b90c103ecda8b503be749e9d93867884f3f08b8e959120ce1. 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/IT00D1103609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47ce9f16ea64fb72a691bf72538e31c20ec0b305c8805254d25515a658a3cbfc. 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/DEH742004676.