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 0x87118b7e843a0d237a09323445ea717b48a184d65e3f139e942e232fedac62f3. 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/a7e0496f-c789-4636-987a-f998d9e60ad9.json and https://artists.proofprofile.net/proofs/artist/a7e0496f-c789-4636-987a-f998d9e60ad9.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 0x17d397f22706d73fabd2f8a8abcb1d7b6ff7c8e1d08a31062c635207a2b4457c. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/DEYX82238402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63165911bf5dc4c4cc315949de0db1369a23c462248edadcbb5fc36bd8e87559. 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/DEYX82238411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b3e5a4eec440499a0340ea6909eea30239f6dcca9ca34271b987b73e2c9fbb9. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:27:43Z), 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/DEYX82238403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe443c555ff1fe2afeb5d9179de4f3eee2d845ed81b28d4343d78b31018fa1069. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/DEYX82238409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa8c0ed3f24e7892a1de4de11e8369749d1b3925475d7789b61d42282a9502b3. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/DEYX82238408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0c9ea7ecff69955fed4d2cbe8b41080fc6a9aa67e2d37e9574feb697b43cd41. 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/DEYX82238407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x806fd0249bf095b5429a59dbe609fd967656269eb020907843e9daab491ede84. 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/DEYX82238404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e600855a6e38514735b97d9bb89c5dbaccea16593d68c1acff11bb01cb3fd4f. 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/DEYX82238405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf561e685f10dd1581b1b34efefa5cd0880392f1bf70929152f57e927c9862951. 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/DEYX82247022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x669e41cb85e89ca3bcda5e8008cd2c64af0a3a5b8aa80779cadefa56eaa46629. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), 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/DEYX82247020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd53e03ce510893cbf9aaf5491b160b8ec16405ed506533d5f97685719f0edbe. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/DEYX82247014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e3f09a4e86e9163b5dc0bc54c5b24ff4049009e1f7b3f90da60046a6dc48905. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/DEYX82247015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ba690d4fde1b4c451a3fe0b4fef70c7d4ef1e6f1083c26b97a3257f75abd0c2. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T13:18:04Z), 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/DEYX82254274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75fb2a3a9292ad734746ae4fa7cc491bb41d56271354be42c720c1684f057a67. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/DEYX82261179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b8ce459043805e0c2e99794597981258c0a8fd0e3893243a68e89d704d52a80. 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/DEYX82261178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x964c9e6f090fffa95ebefb0abafdf84558233118148c9d6f0abde9b2eb9fbca4. Chain 2 (Bitcoin): anchored in block 958474 (2026-07-18T00:59:09Z), 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/DEYX82261173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x732fb4ce4633c673e27295d7c1b8363a280e8de32200fe7629d586c5f1642a68. 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/DEYX82261177.