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 0x1eef3fc9c443ece23d8907b071d333f1bc43a2916dbd243ec64ea84ff71c5a45. 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/10d4d3c6-1044-4597-9708-8daaba444ff8.json and https://artists.proofprofile.net/proofs/artist/10d4d3c6-1044-4597-9708-8daaba444ff8.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 0x17e2460f3930778b331c47e3dd6439e7ff066e5dcc2dc8a289db4f7efb02481e. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:57:07Z), 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/ZZOPM2104449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa67c6184d50e07319455986f15d8d252ab439b08464d93fc4d0ba4b471ae55d. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/BK4DA2307325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x373216cb2d4d5529648299fa82dbb603e30418ca2ae7122878c8eeae6951cad3. 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/BK4DA2307327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28ffa47c675f2e15c9daed0fe222d60522a18ad8d3ee99afc4b390318bf5dae6. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/BK4DA2307329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa67c6184d50e07319455986f15d8d252ab439b08464d93fc4d0ba4b471ae55d. 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/BK4DA2307325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaab3108f9b5707f49167f80552e0f3b80be536b2b7803703effec0634863093. 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/BK4DA2307328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdf24505eeaf721521e021b169058cf7e03e7690841e31e47e81b53165e6be4c. 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/BK4DA2307323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28ffa47c675f2e15c9daed0fe222d60522a18ad8d3ee99afc4b390318bf5dae6. 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/BK4DA2307329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38267f62341822d9a3ae7311aca552915df42a10cfffd10aa1a95a845fe01098. 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/BK4DA2307410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac3ea4b1fe651f332de4a8d5d4883df8eaea9b830dd19bc8eeb474ecfa25cb42. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/BK4DA2307413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaf942ec6bd4e573332a9f8867c9921288885d4a1eca998f8d7554d48387288e. 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/BK4DA2307417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe77b22a77d7fb32b0e581fb6af254eb2ab0bcb46b976c08f95577bbed59148a. 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/BK4DA2307419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2d6d7d1d0b8350b3e89fddb299e46279491aca9810d42af0e2cab1c45bde5e3. 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/BK4DA2307418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dff750125b5a8cdfa51313e86d7b8dda30712843cdb0361ba3eeda0b16f8254. 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/BK4DA2307420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfabc9cb02f11e13f68a5711a31fb42bb3142f7d2cbfa541a8c855a6f5a03703. 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/BK4DA2307409.
Original Motion Picture Soundtrack - IN THE SUMMERS
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf2ed5485f826f8ef2eb1914e950ab82e395affc1d0a17a6cab487f5ceb1c82d. 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/BK4DA2518554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6fdf26e87fa548b83d6427b82473ec65568f22a61b01d9623efe942f2eb67fc. 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/BK4DA2518557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa968de6df150a7f323f1ac3014c89ac838ad2846548915b3c5f4cd0ecfd19e0b. 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/BK4DA2518559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebc5b28ff7df38266c3d42a2b4a6376189631a1be99f504ebb60a3bb7696f27c. 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/BK4DA2518560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a4064a8c0435f6c628ce71eb2196602a38ed07c109387ed1df144f902503135. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/BK4DA2518561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd87374699d20a5b3a38886da902cdb8651aa0ce6d2d7a02c0123d1d7906c9c67. 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/BK4DA2518562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56da67d3b2ce5e66323593308020889557dd898d0fa09e344864ecfe7cfe3a3f. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/BK4DA2518563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cf2dfeabd76e97c9abfe045803a5f118810999051f52f7ebc15caaf91b39f15. 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/BK4DA2518566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69ac920c6d8ca4bb3dff92cbedb51afff88011a0a07abe7a2a9e995d24784f6e. 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/BK4DA2315852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf3287021abfb2a3e0f905af44d68fb3330f5468d902e48ce220f61537077275. 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/GBWUL2323852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf3287021abfb2a3e0f905af44d68fb3330f5468d902e48ce220f61537077275. 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/GBWUL2323852.