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 0xfafab926edfd06c9fab296bf0d4aeb1c5149d5a5ba49a49a2c3b7f081dff0e62. 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/915a86f3-a6ad-4757-88c5-b0f8cf561aea.json and https://artists.proofprofile.net/proofs/artist/915a86f3-a6ad-4757-88c5-b0f8cf561aea.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 0xc2b5ed41e8da7eb363eb33409c6feab1e679655b127e6b5898635cf2b4c16b0e. 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/HUA4X1600017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb787ecfcafdfb2fb41e99c4c6ae42f6c7b55a1f5f6309e991168d13aac6180a. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T01:09:53Z), 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/HUA4X1600019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacc8bf91cc2633b2ba97fc5608fa004c582377abc8c37ee139ed3923c2989425. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/HUA4X1600030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90c7b1b56af92cbd570a98a9b88d65f85096f69cace4ee44dca5f783d076d0b2. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/HUA4X1700022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6299875a33cbeed2030ed160d8931419e8e0120dea83b6fbccd6ae301ed6818. 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/HUA4X1800004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3bde1a8b73a68283786132d89b7a06349fb1a00ef0337654ee41e74ac033a12. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/HUA4X1800006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4aa67b1a35793f41cd4396e8eba289623f68ae2372a01688ba45487cb3818b0. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/HUA4X1800007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e157126e53c0f6667bbb1323bd5734e0657ce83726a2262b1a0c7169368985a. 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/HUA4X1900022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1348c79d8cf8131ff7c3b11bd91fd4b36fb0cc2520b41df96e16288c3d68202. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/HUA4X2200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e729efc9a43c263b8a9e8053f6f62d006a47f205933ff4eb950cc7983a1011b. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T18:54:07Z), 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/HUA4X2200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaa4bdb1546ed4d2c45361bf06f4d84d19c509823be2fc9d968e534fa0979a8e. Chain 2 (Bitcoin): anchored in block 957552 (2026-07-11T10:04:42Z), 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/HUA4X2200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacc296add4c0e28ad1165e391d6ea5f7214258ccbc1a7495f64c79d0119c24d2. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/HUA4X2400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x940fd16e7daf0a122319c665bac9274843e2f7c4f04e9122600a9667f919719d. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/HUA4X2500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9a7cce37c4fd5573cb2015f42ab99cd08be807d35c5507ae47661ce860b94d0. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/HUA4X2500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e9ade6219d781cf5f2145ada6cd71b9023e9fff79c7eaeca2099e1261a38d1d. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/HUA4X2500003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4858f5ef4ebd7f977cd155169c2d0365a80c2422b9dca20d26cf09451ba7551e. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/HUA4X2500004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x610cd16d2eed33bc57736edc157232f9b89313ef0be00aca1b04bf1f48dcc0e2. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/HUA4X2500005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04f57c297a451747e98f29bc9f8c3a25faacaa1148b898f845cc9259ac70584b. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/HUA4X2500006.
Lunar Nights, Chapter. 1 (Compiled by Axell Astrid & Red Sun Rising)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5f73a3446f2fc62f9e23f4f769458cadc2f72e5d0607517fd2ad11ca1bcc0ce. 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/DEH741817793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c1223f3d99861636f1c1d51631f25c75d45ce5a7aa4b23c083191b903272d53. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/HUA4X1600028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90600f35a838bfc8cd45c85293124771a7c2dc699ac76e1145fa38bcf1d2a565. 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/HUA4X1700003.