1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xb790083ad4c2440b8c74f92a6766c325a094715cc410f18291ab07e616996ab2. 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/a2066cbe-10c5-4d10-9dae-551735cd04d4.json and https://artists.proofprofile.net/proofs/artist/a2066cbe-10c5-4d10-9dae-551735cd04d4.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 → block OTSBitcoinBlock must exist at that height 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 0x733301299c409c0cae2db5669a217e6dc1f5695dc2f420edffd12c352bea4cbd. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZK6L2375066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd7421b10bde4dcea64fc1395b25178734f10ca2c79f8aa2493bb8f6ee013cb7. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZFYZ2440465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fe38490c8e3d974fbf14d93304fc0fc9e67b76bc65f61fa3a8a014d3c442b9b. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZFYZ2440467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd23e909f60c07b5f8da01dcae4ee701d2b92847b522086bd5a7849697f3c9667. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T13:58:48Z), 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/QZFYZ2440468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18266a36e7957ad167ba853c3caad82ad21f7f830c34bf11c36c7f36260ee8c3. 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/QZWFR2449587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x314eb11eff55ca4c7f2cdb1a0b8e99cbad990fb8a8654fcf0720c614abd90fc5. 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/QZWFR2449590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95a1d06ad558ff0a889e17581ea2d7f6038e490def6e40c5c1ed7b71dea5a3f2. Chain 2 (Bitcoin): anchored in block 957056 (2026-07-07T15:15:30Z), 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/QZWFR2449596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b9b372408794f37cb22cff23d737f21d3b7199c3422430a056622ea94dd39ff. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZWFR2449604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1397cb3a9fc0f9f7d3fb9128a2ee3945f374ec45d6dd02d81b86e7c5d9c0d51f. 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/QZWFR2449607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6f35fc3cc92197ab4eb05c19af7354ebd0e619e3a3b575b3a5fd2979fd0056e. 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/QZWFR2449612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3d4294808adbe7b21f0ca35eb8a618015b2d9a9e3ce5a7a7cdd0b5d4ccdedd5. 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/QZWFR2449613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e7ce3abf9a0bc17c4d0f18a7b46b45a1f5bb70484436e908dca63079cf71e1c. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZFYZ2558778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaf3d90d34a3faf81d5d62442d8b6526adf3231b3f3ffa74e4c11ea00e918598. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZFYZ2558779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8acd304dcb04bca1b635203226f7524c3c6b9073fa6776e14ff3371287d3d53. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZFYZ2558782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbf4e7eba9a6e9179ff47573ad3ab80ff89dc95b2d694de633ac07a235186b0d. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T10:51:21Z), 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/QZFYZ2558783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc699124abed3122402b59e0ad2fb71b7c808ea74e516490deedb9a3af7b25cd1. 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/QZDA82560190.