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 0xb701dd566a51e3488fafe8334fe391f8f777c01b33b2a6af8d67529d2e2f98e5. 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/b86aee7a-9b2d-4d64-a109-d28a40583894.json and https://artists.proofprofile.net/proofs/artist/b86aee7a-9b2d-4d64-a109-d28a40583894.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 0x92f6feff54c557d02fe3df97949ee952977e9209646a5e917302db50f996e96c. 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/CZA210800670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x383c2f15f5b8a8729d41eb914a043178c5483ceb8f099ac9848529ec16c7d29f. Chain 2 (Bitcoin): anchored in block 958116 (2026-07-15T10:09:50Z), 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/CZA210901097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc81c0084d5ce4438ac77f2c90960874f96b566cc4a42272eb79fd9986c7e253. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/CZH681400026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacecca70963ed19a50b3add2e4e97aaee1b3c7d3456b01c623879617841f5bde. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/CZH681500106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c8d98a6e7472df7ec9000d94e942e689804b240eced1c2e7e40413f6d9276fd. 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/CZH681500110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x486ae4e84220afb1115d87914770cd05a10e7faca63317b3ac4504bf8f744e13. 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/CZA161800586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02889df65cc04c9d38747f7c100d2b99f381e1c480f6264c555efadc675ec882. 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/CZA162000191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ae6bdb1fb565de1e755e04451cba5af4ae36e6b68fc9465a6e4e3a1d25aad90. 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/CZA162000194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ad3b09a9cc2578a9ff17dc86590a1a6f9212ed618097d9acef099bec9751911. 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/CZA162000190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c119f0c6dea328e23fa4328011f995efcd3c86243b1a206914610084545f35a. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/CZA162000197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c2ee4f1e9a5c8ab1fdc8c5f70fda710733d5d24fa1b0dc4a618bfce105e11cb. 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/CZP012000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x593d9c3a76c0f1621e3ee139440a68c3dc0c36b4ca876858fb1823368a69d8fc. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T09:57:29Z), 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/CZP012000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbe70d50cb986d58182acc2bcc2e62b5e723e171f3585f5dec20896d32d6e32b. 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/CZP012100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf0f8c891c225f62626197918788660d5a6b31a29b11d62eba9c65ff7196aa2a. 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/CZP012100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24d8e10ac053b42d9d8535200ece70dd06abade8fd4b831ca414fe1721045038. 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/CZP012000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9accfd90b9d49e892af6b2399d82d6efa0d40e16a5d5276e0196841e5e85f9fd. 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/CZP012200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21612ff24147e322d3ddac5ac22f03255a50e6e6a7b07c17ba6b73bb8a19b912. 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/CZP012300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ded55284a0510e1fe36e57ac37cddb1abc87508af428052caf9600d2e1b9467. 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/CZP012200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f613a57ea491d22a64a650ee2761a9351b0010623fd1600925d1a751755700c. 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/CZP012300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x885db212adcd8e863973ebacc024bedf27c94c4fa123108207415ca6df76189a. 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/CZP012300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b66b2258802da11441c8cdc942a9c548b1751b95f7babb0cbdcb421a3d2c787. 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/CZP012300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe05b4e722f1027f0cdc47b9adb2218aa76e6260882194226fdc3ba485a07cc03. 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/CZP012200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4828fdc16515988685d09434eef90a28d4ac2d2a5a7d68ba197bf0575e35a8f. 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/CZP012300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbe70d50cb986d58182acc2bcc2e62b5e723e171f3585f5dec20896d32d6e32b. 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/CZP012100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcfbe2fa52f43d1e163b9dc11398cd663719b6930ea8773cc7ea9e043f27e3be. 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/CZH681400052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbe70d50cb986d58182acc2bcc2e62b5e723e171f3585f5dec20896d32d6e32b. 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/CZP012100003.