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 0x5a7e90d4072aeee9e538bbcf7be3cb203a0f1457c29dea3790e9c6b43e49b17f. 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/138dd9f7-19ed-4b4f-80b5-b0ae69f1037a.json and https://artists.proofprofile.net/proofs/artist/138dd9f7-19ed-4b4f-80b5-b0ae69f1037a.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 0x9685a9ef315ab98c9b60e2f1c277166890c2946b89859bbd6a4b49cd04483069. 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/PEBQ91715776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae849c3c3e9e49a1e509d773663f5bba19324c1f38155cb6c7312985761cb807. 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/QZK6Q2473988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65662311788a61e0a7455b611737ef0c45d540da61cde8fef0b19ed9bd02e475. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZK6Q2473993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe8a9518bfaa1d98a3bbd6b30a26ae96187926c50858332ce3f3ccf53b7ad7cf. 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/QZK6Q2474004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10ef9dcb7ad7e27a9657c55ccc0bdde3ccbf2c6e7e95804f7def5c8d8f1d89be. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QM6DC1714115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0420597e5b1ec820527d1298378d7cf8d5fa1e9a04a85e476f8dcf18e6931212. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/QM6DC1714120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27eff36c170546b2ee07b229621b412d282839939ed81097d9a0542aaa99fb86. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QM6DC1714121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1cd675f45bc86acac730098b117b398b24c940a27f569f951d044a297bdb0d9. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QM6DC1714122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb59bd7ac4130eecea4b4c621c67d88b627321196807450f0efb9ac2c8ee84f3b. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-17T00:05:47Z), 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/QM6DC1714124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2586381e87982c0a6ba0929425937ceec5b5330df59dd743e737d078c177270. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QM6DC1714127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe47d5626b6d83bf867bfc5e46d911b58bc2f9237ae56e69c9e7e1bcff395ae15. 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/QM6DC1714131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0c7a888a7c01ba268bedfd335f94c8c37592704d672fd5118357f60dc10094d. 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/QM6DC1714133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cb1678dfafee8815b520555f95fc9ca067c9291dd2c0de0dc7051f4f196f5c9. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QM6DC1714134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d15d672c8119c609d09ae0a5f3e69da397de1f1c21f7646f8973b9ee49f9626. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/PEBQ91893563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99f41e48c83bb958d59ba300531dfdec851268ff82b27406b3c55ae2f07ade5f. 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/PEBQ91893495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa34c73d04357bbc56c60e6c9c20ef10ee027eeec5051985ce21db0dacc3bbe59. 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/ES71G2203026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ea7ef7b47ebcc855200ef6f2725e19c3f9959762394384e5338de543fe1be9f. 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/ES71G2203033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fab4f049f42a06f3ad34b4eabd38a4696daf8a4fb0b8c69f1f4b124609b1f30. 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/PEBQ91715774.