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 0x1f7d56683f8eeaa7dcc1b6040ac0763f9e6672324c563e55018cab6760cbd89d. 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/6dd3a118-b2bf-4943-b194-67189bb1e80a.json and https://artists.proofprofile.net/proofs/artist/6dd3a118-b2bf-4943-b194-67189bb1e80a.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 0x04179b0c390229a2cb5e28d5d76b1af65c5d7bd8dffbd9616fd144acd072813a. 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/US3DF2447050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eacb60beb1e9f50b21f7198aa3b37794700e3c353b000094d97a2286295d13b. 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/UKZGC2503439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x173d94d51dcaf3ada2c08f5e4efb7fa3df31976bda9b3dd28c11dd88a46085fa. 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/UKZGC2502311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x068262ea45237344f5ee9548c37b805171d8283c2404b76d39db99b422025614. 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/UKZGC2501941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2876b8eb5b07dcd21c5489f1d80c3de6415d80bc01aefaad0e5908a933134ed2. 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/UKZGC2501945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0bf8989ba1257ef1a9ae54dde608e16b93e258776a5f3ab54339264775f1d91. 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/UKZGC2501906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8a9d4421fa422e8ffb9d40a5d5c31bebacb78e1b9e48eb3256c62888bc47dfe. 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/UKZGC2501887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1569e497d98b6a92dcf70d678e028d277d4fa37f3d60f087bc72b459b4fe7457. 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/UKZGC2501891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0096b7f216d63fb7b1c74aee1463bff7672a23f4217120c67a71ab21527776e. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/UKZGC2500648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56946e29f6c5d19254f7dde0a23ae3b86e41b51b160e97d68d97ed189563b724. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/UKZGC2500821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc703bd4bf9ea63bafc3b65d246fb16c76a589723cff5bfef6fb9f3aa809d0bc8. 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/UKZGC2500823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18aee8e093e95e52bf94fa9b61c6a7ddbc052f1c24d3981b982faf2450eb1a47. Chain 2 (Bitcoin): anchored in block 957065 (2026-07-07T16:43:21Z), 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/UKZGC2501052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0096b7f216d63fb7b1c74aee1463bff7672a23f4217120c67a71ab21527776e. 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/UKZGC2500648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0da7320d6407b733c2cc2b312d963d0fe8faced0888fc9a6ea4c417ea1cc7964. 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/UKZGC2500877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe765eb52fa04f830be33bf899367b9c61b53b8c77c01e48772f23324155f39d5. 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/UKZGC2411280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe14b73c71ee262e54cce6edcc6ce0c51bb0451bce7aeaf72394c39855d75a36d. 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/UKZGC2411153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe09779b6495aa9b30e12521775a043aad9122e5d9bf3c85da61a7ee904d187af. 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/UKZGC2408842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3547a3ba129b18c7627d1d6293250675f58dbc2185d19eb41e502923ad1c83e8. 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/UKZGC2410244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x673ee9d16072dfde0fbf17b634dad7d05f967765a1548c0c66e67260db666efe. 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/UKZGC2408464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9eff21dd55017993012d56b0c709a1e1d4a2a0378fab7f23b21a754eea02a3fb. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/UKZGC2408469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeda2657fa704206833ad1e159eace63030cd4ce77af411407174d1ae829554e3. 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/USANG2449568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6994e8f7aae4d632c14664d95649768249edbb0a1b1ef63f14b7d9903611f90. 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/UKZGC2408632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecbcc381498205a9516448c5a79f08f3758e285c3b9ebe0b1f8179063b74c85e. 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/USANG2427629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x113797d633fd8d382378ac6b0f4b2ba061f0111496241c6da2fc988ffb9ddf11. 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/UKZGC2407354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31b33def72622da0f2dbeac1823c7a501e4d9dec65a1f7cb77d915ebb7c4c99c. 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/UKZGC2406161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1baea2e3400dbf30c9357ba446f2b40cfce25ff8a7813b6e0ac16cbc29f1ecf0. 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/UKZGC2406175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa30b4716c0ff8f61bca3381b9ce7b4af6f25bb5e737e002d53f458f2e1988ffe. 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/UKZGC2404257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc90eeb4e833c9cc61b64f51c60bcbfde043791a83c32d2cd5ceafe3f9063d004. 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/UKZGC2402895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf627956ced11e41169c1f3496441dda000452069912fe3b81c009c2df3f370c5. 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/UKZGC2402902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x113797d633fd8d382378ac6b0f4b2ba061f0111496241c6da2fc988ffb9ddf11. 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/UKZGC2407354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc90eeb4e833c9cc61b64f51c60bcbfde043791a83c32d2cd5ceafe3f9063d004. Chain 2 (Bitcoin): anchored in block 957055 (2026-07-07T15:12:44Z), 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/UKZGC2402895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1f2356533b8ecb58c45d312f3ab3d41354b46c2fee09bcbfba35b79387acb5c. 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/UKZGC2306875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e91765e49d5deef2e2ff6515eed661cca1fc5251cf49094ccb290f9e11af22f. 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/UKZGC2304708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ab3aac501b8efdd3919e0442b07805bc728b0e7dcae5c90778baa6e5ec67127. 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/UKZGC2306876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c8919e44cd2f1fb867f2005fcde1b0090cd0d15f342e85135c9f73707404ae2. 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/UKZGC2302596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf54864c8bd94a3ab19447457c3ba66b5583319924602b936e0407955d93c56a3. 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/UKZGC2305524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31b33def72622da0f2dbeac1823c7a501e4d9dec65a1f7cb77d915ebb7c4c99c. 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/UKZGC2406161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1baea2e3400dbf30c9357ba446f2b40cfce25ff8a7813b6e0ac16cbc29f1ecf0. 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/UKZGC2406175.