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 0x85789679a7e0cbd9f7ba32c0b09f5d433ac3fcf515758f8b0bdeae78bcfcd4bc. 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/71a646a7-12ac-40c6-9569-142adfe1c822.json and https://artists.proofprofile.net/proofs/artist/71a646a7-12ac-40c6-9569-142adfe1c822.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 0xfc57771fe80e0ea003a2ae126cca0fb1ad83532af8398c3d68b96d227377990b. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZWFG2532928.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1035630fbaedfc1754d61dfebd5bd232596e37f83a4a506ef72040aa67e2e090. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZ8BZ2513509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x255c0dfce5565540e434ccda31819eafda500360d08644abaa1d94d07fed2f74. 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/HKI499504120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29eb9def746f2a3d8e2ad31c792b78cc89e018b6ebae47f3df8e5d3f2c03dc70. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/HKI499588107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29eb9def746f2a3d8e2ad31c792b78cc89e018b6ebae47f3df8e5d3f2c03dc70. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/HKI499588107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82d0aef0b63a4d10610d1b223dbfbf0ed08dff1dc6e9d4af2e331459a41da2d8. 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/HKI499404122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29eb9def746f2a3d8e2ad31c792b78cc89e018b6ebae47f3df8e5d3f2c03dc70. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/HKI499588107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa64817b31da5315d4d82e1b052b7023da79d271f5915db237ecefb45abf6623b. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/HKI499404121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x947f8d080c68899a4189e70bddb8db321035b878ea39054cfd38ad0848f7455f. 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/HKI499404130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5036131d61278633dbdf0a909b0ec4eceb50a8baccbc6f5a37ada53115c4bc54. 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/HKI499604117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x947f8d080c68899a4189e70bddb8db321035b878ea39054cfd38ad0848f7455f. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/HKI499404130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82d0aef0b63a4d10610d1b223dbfbf0ed08dff1dc6e9d4af2e331459a41da2d8. 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/HKI499404122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa313640b7990dac0e898b3afd66c32147529408269a7db78c4014fce981333a6. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/HKI498804106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa64817b31da5315d4d82e1b052b7023da79d271f5915db237ecefb45abf6623b. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/HKI499404121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x947f8d080c68899a4189e70bddb8db321035b878ea39054cfd38ad0848f7455f. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/HKI499404130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29eb9def746f2a3d8e2ad31c792b78cc89e018b6ebae47f3df8e5d3f2c03dc70. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/HKI499588107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82d0aef0b63a4d10610d1b223dbfbf0ed08dff1dc6e9d4af2e331459a41da2d8. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/HKI499404122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x255c0dfce5565540e434ccda31819eafda500360d08644abaa1d94d07fed2f74. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/HKI499504120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa64817b31da5315d4d82e1b052b7023da79d271f5915db237ecefb45abf6623b. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/HKI499404121.