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 0x3b2fc8286bd12089cb2642ee3e16aed6457d78e016b1fd9b4967310e52440996. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a9218630-7698-49eb-ba18-5ccee7fd2ba0.json and https://artists.proofprofile.net/proofs/artist/a9218630-7698-49eb-ba18-5ccee7fd2ba0.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 0x398ac2ff5239524304f25d57ffc710ba4d0e2af2d4c1afe914a4541c9e3e2c78. 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/QZ8LD1932839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f14d6653a9428d629c189ee72cd6d27f075338403ac9cc35661a02c9eaa4b0f. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:49:46Z), 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/QZ8LD1932840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd43a0008a0e49c48b4ed73167a5e1b51f7eef8624b9ff75576591504a8342bfb. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/QZ8LD1932841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x271611819e6f33a86e40a46c40e2337cc53a0eebef9a2ecb989e4bca95cdb35e. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZ8LD1932842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce984f4614dece423632b896c556d66a8e9fb58113237f0fa52d644b6705a140. 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/QZ8LD1932843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x451b0ba7b23c99092e499ced57a12158f63a2c89d9c727215e5c14bc2c47391b. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZES91885083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaf4f6143777d2d6357fde8939594a1aafc6384bd4bf3b0444db707d25531f04. Chain 2 (Bitcoin): anchored in block 958325 (2026-07-16T23:44:16Z), 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/QZES91885086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf807e8ba87dc15cfe88b2c2c5136356e992735eb1c65acc7a6a5d7831065d471. 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/QM4DW1784160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x094c8da8e8a6aaa075b3ccce5807dfa9ab9f3bf1ca8d2b108568ab9dbcaae088. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:46:06Z), 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/QM4DW1784162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1e04be03ddc8b3a8d5b6bb25e57635d2881da6af72f47883a6263a27e314ed8. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QM4DW1784163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9df4b14d379ccdeee9f2c1d064b23646c3aa476d991d923c76fc0860e77f9790. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/QM4DW1784164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e3010320b079d32ec7a2555e9f43c5a1e14ebe5482a01343679cbfb7ba9ec32. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/QM4DW1784166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68230708874dec572acf3a37bcdb8320f73cffe1ffea705a551c24c7f8e77cab. 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/QZAPG1702702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47aaa6c557423a6d6b9925598d3b5112926b05b65ae1052d25951c08922df6e8. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/QZES72335934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71bb0fe97cf6edde08dd0a7ea4d3a10f1f6877fdcdc6f5a71658c75b5f7f8cb3. 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/QZHN92358182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac3192062d370e732ed591144bbe60ea4cb966d12c99c039588af327c62f6e34. 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/QZK6G2348398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e7436788c6936e6d87a8465ebfb0673451785cdd135d3c53397971af3349246. 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/QZTB42332933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7461032f0f6d82206a566e595404645b0e18ffe221feab767419c036cbc2b276. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/SE6SA2563711.