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 0x5a8f84ead13f4cd6636478206c3df543f7cd7fa6a1a086295b566f56c13bbf27. 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/09d5e9ca-b8ce-438f-a41e-c780c7243a55.json and https://artists.proofprofile.net/proofs/artist/09d5e9ca-b8ce-438f-a41e-c780c7243a55.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 0x3b1826b39dec1c70a92cdac982654c36811f39c8870ae6688f5f4393370df20a. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QM4TW2227414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92dfb752b1fe370afc745455578fb7a5ec284fbf24a441daec24e7eafa33435b. 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/QM4TW2234906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa011d8061e15d0bdcd1ecb8bd82e301ac823bc8aa401a78f04a24b35a1d03342. 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/QM6N22215206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28e005e5368f17b7bfd4c59ca77a49b3288e9f4196f0e8a261e165447d4aea11. 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/TCAFM2112149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x298494b028c7872467f071f1fad0e0612b90bb8052810299da5077b51ddacd26. 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/FR2X42409968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7e0cacf1a2c1296ed79cfbea568e85838f0487baf852fcb6aa06592bdb4fdce. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/FRX282404013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21053618d74271d7bceb40374633e7fe4cdee4d89ccfac78c0e230651982970e. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T05:55:09Z), 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/FRX282404014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c479c8be04539e945f240f1efea9b80bc23576d6d9c7e8771606916c362c4c7. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/FRX282404017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd129211a36936be3e58da9770f5a52ff8c3b51d135082c59ea48af42494442a3. 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/FRX282404027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b9730fb547a91ff4904397f58cc91dfcaf6f7bd1d7ba62993825ec82f33d7ed. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:09:22Z), 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/FRX282404028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0296eafe0505970a7813454d66d09a67b35ee289ebeaf9e23429652306586fc. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/FRX282404031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1966295d4042a5de83b3d5b467ee16f769218cf2e1f64b142faebea2244e627f. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:26:08Z), 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/FRX282404041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58389f7457179390c5d77a1a5f336bcadf1d40cd7a02f16a421213ea1fa24ec8. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/DGA0R2469739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28951e324dfa9395556e533d548245e03144939057aaa65c06eb3ec57cec03f7. 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/FR2X42549811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22b76b70e6c5b457870e882c626bb257e1718f57e4d6d7b0e19a5831642798d1. 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/FR2X42549812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c2157213b9b66f74c23cd4798c1cc1cda2d630ffd080bf718e40ce06147c78a. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/FR2X42549813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2a63b19c7c96adc5484d9c1fb022f5a1afa5db51dbe4395069d8d4af730d09a. 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/FR2X42549814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x625557533307ceaa5fdb61c488697e4e7e8bdd1f745111425ce1debaa46af7af. 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/FRX202597451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1a8a6f81889ac294830d879861051d7581d888c85bcbc7a542ad774f1c2a47e. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:16:03Z), 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/FRX452547513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23c5063b1da23b7e8e7f6b531422987fcc69b9cd29ce2a41f87ce7986c99f40b. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/FRX452547515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb427dfdeb18b971114ff574b41c1f7e632d6b0740ca7dbd447b8db1392d89b11. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:23:44Z), 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/FRX452547516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3427e0a6749488e58531d453d0ac6180dc916c8b634b5be1fa281d18a1469e92. 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/DGA052505510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa82298a8c4f46e495a6e80a25f2cc76b8963533303700be72b85ef3391180859. 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/FRX452295457.