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 0xfd35eebce5300c60e7fd125bd575d67bd5c258fb1f24ea464e346844ca0e92c4. 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/d98efc1d-86c8-418e-b090-ac080e21692c.json and https://artists.proofprofile.net/proofs/artist/d98efc1d-86c8-418e-b090-ac080e21692c.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 0x01699d0ce511e463c158c1df04dd8fa853effe137fefeee54bc2f2987e05a60f. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-17T02:40:01Z), 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/LTA050400047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc559b35d4a8ff0fc14e3175aa58c1f6ee4052a0cd8b6b3d9ae57e9ddda16629. Chain 2 (Bitcoin): anchored in block 957558 (2026-07-11T11:36:38Z), 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/LTA050400049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd892c077c64baf302207f9dae5eed0cab5bee0565340d8fbc7341e990adc09c. Chain 2 (Bitcoin): anchored in block 957554 (2026-07-11T10:39:45Z), 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/LTA050400050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a9b2d744498192c9ff20c49226ce17d9181fbeaeebe445d56b5cf54fd5aa165. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/LTA050400054.
Gražiausios Pasakos Apie Princus Ir Princeses
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x057e2ecbbf733509d6204fdc869da84b533321aac8db85f9c1110c207d3f40a9. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/LTA050500007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e29545dabaab6681ab2058fb4efca94d775cc24a7798e165f99666875e3edf1. Chain 2 (Bitcoin): anchored in block 958695 (2026-07-19T07:37:00Z), 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/USLZJ1874943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf97042858345813a2e6eb32dc0fb0027cb3a33bf1aa3c0820b800e71f2990591. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:08:20Z), 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/USLZJ1874948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31aae8073b5a5b2733e25f62b169722a9e04942bd982482495bb4e1594d356e3. 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/GBWUL2369474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x232ea15a3166b280bbd7f5c12d89a089cb9464840d7eda3b636ec96b1f8fb6fe. 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/GBWUL2369487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52f0633c97a99ced641166dc12b1ab3870f2fe71e3939743de5817e91c1b5088. 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/GBWUL2369489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7eb924c05c12c3f31c152f5a4beb9c212d9b43e2767d9956f95b65dd86edac92. 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/GBWUL2369490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ad5d616a7e4d07b94873afc640662fcdf325f2b8209155bd1fb8ac41c2cc4ba. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/GBWUL2369478.
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 0xb332e9fca9f88925a782219fc98542a4dca10905105c0795de51f99ba3f59e69. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/GBWUL2369480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1305cf54bbecf6d945d48a6ef931a127fde2079cbbf207913f5cb3688fa5f8ea. Chain 2 (Bitcoin): anchored in block 960387 (2026-07-31T10:06:30Z), 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/GBWUL2369482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd6042c0d7546841dd69a27117fa7d69c010dfd4a2544660e84b0957d33fef6e. 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/USLZJ1824774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9c823673fffc984b9a72a4daa3c23def48d7aebe085ec854bc2d0a4af3c1b31. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/USLZJ1824776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf54b81f52f0b28da085c8ef2a31a0a253421a3bcbb4542e19dd935d5ad6265a4. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/USLZJ1824777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdac27cfd3096560d188e857ec60455be44533bc76074fa667fb1ad38bd58a184. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/USLZJ1824778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05d48a98ef72f53c8aaf6dbf95b0419c2adda338ee6ea2fa29757ce90b177e52. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T15:47:34Z), 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/USLZJ1824779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7266bce4688eff0dd00c3fe06d122b0f7961e8ba0bda2a8fc3b98ac01c511376. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-19T22:59:45Z), 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/USLZJ1824781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x236e909d653161afedbef7afd61aae901b3f97ecb3765393b49cdbbd4c8a7bca. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/USLZJ1824782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d31be2ad391182201b8a7820b24b2a6ce4bae5d87d5fa1650ca4e153b30eaee. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:45:11Z), 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/USLZJ1824783.
Gražiausios Pasakos Apie Milžinus ir Nykštukus
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1059ee6c107345f8d86477aa92021b93637602cfc62b56c3706a63ac4117b9d. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:00:24Z), 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/USLZJ1874796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbde9da0cfaa03adf18423860c4c4450abaa991c65be1228f91c12043aff1cf6. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/USLZJ1874811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeac8adbc74a4fb7c9f939980ee9a446e6f8f0dfe2c736f8470943a5e5058b74. 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/USLZJ1874812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c3730f4e523107bde941210d85283270a6b90d690666b8c6899d9191e27bcb4. 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/USLZJ1874813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65b5a39f8d15dc04ea08cffa26bd6bcb4b0678fabd2895be32e9f08fc5296b81. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/USLZJ1874814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ebb029e31f5f7a29cc3f498aa2975a29d5a57b4bd2f6df5db40f6ce5007c31d. 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/USLZJ1874816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca8f660958e665da127476f8029274190ccf6d10d6fbfb7661ac4641b57ab290. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/USLZJ1874817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4abab229f18b6825e83567b97527310fd8c867d5128d762233cb1ef55948e95. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/USLZJ1874820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd228af1d9fc135ab26b87c711c36c51f8325fc6990342e387b5982d5973ef8ef. 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/USLZJ1874825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf37ca157e1736a03d0d657dc7d3869d91d90f04ff498dbb89e63a8dfc57ce135. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/USLZJ1874826.