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 0x6be012f51f92fd3e10d6ce056610dc617e6d467dbf66d28d87fa28cadf080b80. 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/d48cd0c7-d523-4792-81ac-071abf84acc6.json and https://artists.proofprofile.net/proofs/artist/d48cd0c7-d523-4792-81ac-071abf84acc6.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 0xedf1cd98ecc727af8c2a7e0b68493f0442507b1cf595d25bc2a2af0c76ea70de. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/TCAEZ2057643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78ee4b7b642c3fb569270d47016f401fa3e6972e9191cef41c6a364781ae5634. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/TCAFQ2191790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2954bafab9dcd07c19025b0173d59575617c9af7c48731dec73063f2a209aca0. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/TCAGI2233241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc15ba0951f372dc121dab97087290040bc130d69040363c6f92f010221accffa. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/TCAGO2219805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84f2922548118dcc772bec128f747a104849e7cd3d1c33d67d82a341358a589c. Chain 2 (Bitcoin): anchored in block 957744 (2026-07-12T19:15:44Z), 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/TCAGY2321886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69e7dbf71238c21afc5f85faa0a2e651d2f04647f88c68606b3d2b2b1fbd1332. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/TCAHG2376539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8035bf87ca5d6f532f3ed5d63db77ad7e2ac84d7dbe0dca34d46d9c125ee92b7. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T01:38:24Z), 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/TCAHW2436488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ffaeef89c14333aa935f26a44442effa5ae19376872b4aa0bc17b03ede1266d. 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/TCAHW2487472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3affa1fa5113a6d05d2980241e192ee5ac106bc0d22153e47c0763be4087dd1e. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/TCAHW2441210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x057be2e164b2b232ee30ab56362615a03cda86bac107f62e70dec96034aa8487. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/TCAJJ2587727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x871a7af41b83bef7ffa94c56a1d68a07593c582ed456527c456885b949bbc7f1. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/TCAJO2588305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc02fbe3b441d275a83ec0b4b2d47543e5d835afe9a02d024de05514f3041baa8. Chain 2 (Bitcoin): anchored in block 957780 (2026-07-13T00:36:44Z), 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/TCAJR2527776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6749346e6062024918eecfc74e13707c218be8f28fdf3c8190fe14fa83d429ac. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/TCAJL2549324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x871a7af41b83bef7ffa94c56a1d68a07593c582ed456527c456885b949bbc7f1. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/TCAJO2588305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x057be2e164b2b232ee30ab56362615a03cda86bac107f62e70dec96034aa8487. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/TCAJJ2587727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14a0f9983d77a0f450f4427f7d9202084dc442fc6be47b2138192a0fadc33460. 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/TCAJQ2527941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94b5c90acdde32f98593253d8e654ef17f6cf7d20761e848e30f5c695b0b8b7e. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/TCAJQ2527951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d0fd35889130ffdea1f0c3cca983651b33475ca489483abcb9d3d0ec3c70cc6. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/TCAJR2527963.