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 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 0xb154ae05cb4a51ba2854837178b59f3a04cf5b9a752f61f8be0d8a5430f44e55. 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/559a21ea-2da2-4096-a6b7-839065161c91.json and https://artists.proofprofile.net/proofs/artist/559a21ea-2da2-4096-a6b7-839065161c91.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 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 0x13767963365183c081b2f2ec6bd19d931d0bdde49332f3401e0fe4c52b237ebe. 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/QZFYW1985777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b0807a12e130db0a08070960319859e413fd91a047404abdefacdb1cecb246e. 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/QZFYW1985778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x937cdbfc52e158d9447c9282f65d11b859158713159f589053d31b9dfb24003b. 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/QZFYW1985779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x086403f530d99ce0efa6af56b2e39ba1df933ec4c9245edfe6fb8b0c863011f9. 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/QZFYW1985780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec03669bc7b1818b7ab00b2109f558c2176021ac45e7dde9c189255ab6c3cb5c. 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/QZFYW1985781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfa48049c25fd34e232a53730bc745954423e4735c9e038f726307c046b4e08f. 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/QZFYW1985782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb9ad0eb7ca35a78124fad46c63fd5475838988f73fe5ffcdbffb828092d6c62. 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/QZFYW1985783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf28da73660836d8d39699275e9ee6da47ebfe00b141284ba60ff74e8d04a1abf. Chain 2 (Bitcoin): anchored in block 960193 (2026-07-30T02:05:19Z), 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/QZFYW1985784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b660f7afab9d0963faef62313a98ea1ccb6ba8015deb529df173e75a78dc0ff. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/QZFYW1985785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4d64cc06605e8a7b3f492e876d7f88cd994b75d5eb7d5a7f107dc7a0926ac1a. 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/QZFYW1985786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9a4f359ab767a2800bcc18a2943c960d8cc7f8f50db92cb05e52667cf6f15f2. 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/QZFYW1985787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1384bcb59d16ae5c863b5eb232d141a5bc0c12e8763fdb4e5d1445eeb1bb057. 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/QZFYX1908509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee6b1222635ba0bbb942ce831581fe108d65ea34071ba9ded0619d4bfb417520. 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/QZFYX1908510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aa0c2e5042e81a0b84521a31da2ea1752e55ad46b0748b8aacc3776541c2ea8. 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/QZFYX1908511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdec00e06a69fc279b319d4cb90ff4c2853d78d0c9eb57857050bb9f2b352b4c. 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/QZFYX1908512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x588ae0470220533908e8d564a7135729fa2a1dd9fc2d3aedfa1c9d1b25303b92. 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/QZFYX1908513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18135a09f7f6ca888f0b3ccbf1e9cc85687228e9497eca741f64f131720d84f1. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZFYX1908514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeac503a7522af56bdeaf54c5f084a76dae52bb69a92b35c60e89a729e701fb7. 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/QZFYX1908515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43f437130f8209696e14059fe3243954ad915afa3431d66f413b3c313d8aa93a. 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/QZFYX1908516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23a57457afe4fb006c65e5a54eb75c4c3f6c21f0db02172666a807efaf7634da. Chain 2 (Bitcoin): anchored in block 960106 (2026-07-29T12:41:21Z), 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/QZFYX1908517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31eb3511484a168cb1ab6397de5e3de5f1457256f0710afab0baddf0d5654a6c. 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/QZFYX1908518.
Bebek / Yusuf Yusuf (Yeni Kayıtlar) [2024]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7f332cf69eeb4eed534a35a9df704c08e9c5f3ad8adab3cd9762c14349afa2d. 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/QZTB32414172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x804def661f5b8b234d21ba6001d89bc72218defbdcf4cb2df74c47c083346175. 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/QZTB32414173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d30f28d50b979b0caaa86d6c092bee505946521b461108bfb2fec05d1b2e14f. 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/QZFYX1936042.