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 0x4b1700d84d336c7744e324281e915c7204a1714eb7501b7c5589b0b020511022. Chain 2 (Bitcoin): anchored in block 953620 (2026-06-14T09:36:10Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1fb4d8ca-fd54-4093-bf67-0217ee980efb.json and https://artists.proofprofile.net/proofs/artist/1fb4d8ca-fd54-4093-bf67-0217ee980efb.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 0x0ec890b35e74e99c2d3a9066a106029c6d28050c249c4116d69ca341f07e3c53. 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/US83Z2356006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66eb5a519fd72051cb72b63e2694edc51d44d7ddd3fb45adbaf5c426298a3b6d. 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/US83Z2332096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a9f1b9a6a06b1df95c9f7af06ee4f38c4faa3ed740d5b827b0d30910c11cb26. 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/TR0510600374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53c9485c9b18bb7ae6e5c693c28e7d8eabd9432e3a2ce0024cdc1e34bdd79c51. 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/TR0510600382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6bdc4f47bd714b8e3615c0bc9cd0031428935590e33d85a6e0d3432f6b7b9a5. 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/TR0510600381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb5b73d1c95cb8ef3d93953dcc74c75ff6e68dcb10d6c8e71b45dd49a1aa61d2. 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/TR0510600383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5739ad32256442e0025eba77b902dcdcd23f9d4a94a1fbbd7b951a4c80b73fb8. 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/TR0510600378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa00b532a2f3ad52ef862e5be4c3bada1263aa803ccb73fe9cb13949be5e23718. 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/TR0510600376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10ff7bc5c34cec3ff19bfa16f1d56d730f26128b9a42fbd77dd829c8275b847a. 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/TR0510600379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x300b803a4b96ceee3e14c76d05059ba929826a497643b581f8d7c908e81d2176. 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/TR0510600377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f30cdd479902429f8fa05e9419b45d66651eff85c282c5b1876fd7912083d87. 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/TR0510600372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe03c6c07151c3647ee8eee6cd79e2638dcb0ec9ab0177891543963f99034e13e. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:09:24Z), 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/TR0510600375.
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 0xc0389173cd6251b6e8ef1856adbd213d41fc70c517028672a53cccd2920549e6. 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/TR0512307431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09618abcddefe7da27e85982b9796955513a0dad55a9267e2628044945e046f9. 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/TR0512307433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f9c463664eff945b5dea6e9a6319764f24567a3a51ff0062d2579e9e3bd909c. 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/TR0512307434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e65d8cc3989478867b47251ef556f49a30d16de932ee331602e3a539187fb4e. 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/TR0512307436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72967a5dddd01fd127e0799155478f7879763417753325d8092f9b8ab24ea2fd. 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/TR0512307439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x876c6004ff0d6a5aa8f7edf221b259befc4aa797ac9df62c51973fec06980539. 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/TR0512307440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9166a09f8409511aff98687f39c4ea191445acb7998a74a7c575ac8e5e10c97. 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/TR0512307441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd662ce4ef0f44ef629f363d1ee90187ff8d20083e48dfec2447a1c2f5f42b25. 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/TR0512307445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda2d12a95d2f2df38a37e1b1904f27beb93e1966a1fbc51cbd613d88be03c465. 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/TR0512307446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd15b51963cc414f91a8dd5735a2923d9ae34f9a710e18daed844f737fd3e282e. Chain 2 (Bitcoin): anchored in block 960389 (2026-07-31T10:20:10Z), 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/TR0512307438.
Sirûdên Şoreşê Yên Gelan / Halkların Devrim Marşları
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bafadba1719434928068c37f2b90f6ad0007a2efdd23e90b8d8c4c458fe7d67. 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/TR0511704068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd61388b05e7d287cf6206a9ef697a703b0dc4a1ca19973deda33ffbda46e0485. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/TR0511704069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ac11923244f8116bd0b53677c71d1818767a8f674eb7689642925a2a0a6efc9. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/TR0511704074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f60315dd76fbd677641e9468ae033ed59c8723f191cc33fc29c7cb4fbff81b9. 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/TR0511704073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2d71c73413103570583afd6d783039f07c7afdee1fdd4bb0b44ef71e4a5f0e1. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/TR0511704072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcfb338e8db380d2bda4b91ac58d16ad625e57190574b82f1fa281db9c11e8be. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/TR0511704070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ac0e77cb98701442c1e3f5434cdcdc52d3d72a81c89d7362bcf49009880dbcc. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/TR0511704071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb61360f4241d80d5fe5108d69f826066b1cddbe701cba2ce86399a3e39f41ad7. 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/QZWFP2381183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe39ec51d730d8c6d74f328b95088bb3138b13e9e75d0a5ec3f551b8f2a1e7f0b. 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/QZWFP2381190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70addcec3a0c3b1771676f6baab5a01a5040f74854c42fc444379f1ddd10e29f. 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/TR0201004177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8b51f6bb551b4226df03d9f7d4be8127b9bdd578498ce0ee7d75a532a61a8a8. Chain 2 (Bitcoin): anchored in block 960456 (2026-07-31T19:53:57Z), 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/TR0201004181.