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 0xc3d49590c00bc57232a8622b7c4609a1d1a66e34f997208de187c338a068af96. 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/bcad81d3-827f-42b9-b9d9-4ed40f561466.json and https://artists.proofprofile.net/proofs/artist/bcad81d3-827f-42b9-b9d9-4ed40f561466.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 0x46a6f022d9f5bf347cd1cf85736d8a66d1fe9c80ad934e17def813cf8e09b7a8. 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/MXUM72103424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb89efd1430ed85e72605616b8be7db913a783e67a3ea80bdb7c64a45ff90215d. 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/MXUM72201131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c7b0ada300d666ca822d5d37c124f987119ef906141550accec7ee58318082d. 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/MXUM72201132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46a6f022d9f5bf347cd1cf85736d8a66d1fe9c80ad934e17def813cf8e09b7a8. 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/MXUM72103424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccbcb2652cdce997a9073112b25cc6e4d245a0a0869e77b2e251fc6fe6389ee7. 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/MXUM72200314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6beb1fb1f5b74dbdd1d7c1c54dca53f73a3e59aa579c7209caaf620e55ecf3af. 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/MXUM72200774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6388216648a68655c6e6fe39465cba1095f5486ce0959ae12c4f6f738a2ea2eb. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T17:41:08Z), 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/QM4TW2440663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x494678524d6dd647f9278e1c51aa8e0468f6ee88838f78aaa51d4005f41f0b71. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:02:30Z), 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/QM6N22480870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0ac8fc425796fdeef972ed3fee912b77fa7b11ccc7393914263bb3ded69dd60. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/QM6P42438958.
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.
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.