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 0xfce3c2d6df2fe87e537260856fa53a03e81395cf1a0b64586b2377789e343ca4. 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/1e99c17b-0abe-4687-9c63-6214e66b7bdf.json and https://artists.proofprofile.net/proofs/artist/1e99c17b-0abe-4687-9c63-6214e66b7bdf.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 0xae7e4312d8917dbdb44efcafa920f1247d68ccbc224c08cf96393999d7862430. 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/PLB382300576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57991c0dc1ca56193b44ed6e6feb39402b08fdd5136050dbf16cfd609df0902d. Chain 2 (Bitcoin): anchored in block 957867 (2026-07-13T14:55:20Z), 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/PLB382300577.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15a1fa63cf4769ead306325801b740a8cba46663c3910f410652f0ac1885c17f. 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/PLB382300578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebaff3006c95e689b7aa0fafefea47dcf8eaf435a1daf49e586abd51b48f245d. Chain 2 (Bitcoin): anchored in block 957884 (2026-07-13T16:55:06Z), 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/PLB382400456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfb17ef2e52bf04949ca9e4aa7d536d122b632869d967d3fa1236b2ca71465d1. Chain 2 (Bitcoin): anchored in block 957884 (2026-07-13T16:55:06Z), 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/PLB382400457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc7db6366f60a3bdd32c7749ed2e522def3b785a556fcbd81982af60d648a94e. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/PLB382400985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44611397d04e7403ef696692b355371c28dc4082bb2b90e5c450efe2cc79b075. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/PLB382400987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ab88574d7286385e588576d6bd308b0fa1aa18bd408a86d3ffdf0e99fe79532. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-16T00:00:19Z), 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/PLB382400988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99aac7bf6b4d293e55477e755d262ee86c96f84518945e58f6bb03ef73a7f079. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/PLB382400989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3637df2655faf809a215d60b28382a54d4a0016f9b8122dec30c37479413245e. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/PLB382400990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ed5f00721062886bf86da04a5cbf3162e71dc418644065991870542795c79f5. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/PLB382400991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe09e1a05ec0aefa58c1901959a04a882e38a28bc005d783e43e8b60c428f9fe6. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/PLB382400992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d90691eb45ee0130ce79b97aa95cd916b82251134d86915627677089e9b4688. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T23:11:37Z), 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/PLB382400993.