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 0xb3d93ccbf7c7b49c98ba86f8d81168b928fbd01a59f63b57c3f4b3e0b0e74f7a. 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/7178cd37-5002-4771-9491-3ee08661f688.json and https://artists.proofprofile.net/proofs/artist/7178cd37-5002-4771-9491-3ee08661f688.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 0x9bbdfb4405a58efea57f496527b979f35235bbb2302f3b8be14aab9d988a9e12. 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/DEYT32000102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3ccb9e123cbdf4db80e5463ee8db8a1638462c6eb5a8a1a8956fb10d443f0ac. 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/DEYT32000118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73691632e92f3f3711148e0e8f6dc4e50eabf87c161689c5cf2feb158261c7b0. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T11:27:37Z), 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/DEYT32000125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee3b33fe23bfd3072053208765fd1200fe76ae5b6f16151c780f8b5c290a38ff. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/DEYT32000126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4af8bd0896e84d3401672491823604138a914a0de3eb9f4125c4c9c258d5e0d2. 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/DEYT32000130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee3b33fe23bfd3072053208765fd1200fe76ae5b6f16151c780f8b5c290a38ff. 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/DEYT32000126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73691632e92f3f3711148e0e8f6dc4e50eabf87c161689c5cf2feb158261c7b0. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T08:02:12Z), 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/DEYT32000125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9060d8f531aeeb14d1124cf1a7430136cfd121ce77c934fdc3310d84df2493d7. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/DEYT32000129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83f4f6970ce286f9f9c53be8bd235f003f9740194c9ea367a1b0110aa0e91ce2. 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/DEYT32000135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86826e9a1c6d0da2fe451ce2c037737dbfbcb01ad44c4cacd3cbfb7e7356f1b3. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/DEYT32000137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86826e9a1c6d0da2fe451ce2c037737dbfbcb01ad44c4cacd3cbfb7e7356f1b3. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/DEYT32000137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x753f894032aedd2a33c322e1f34855fb6634f5c7e18f56f4bd560673bb21f390. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:30:08Z), 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/DEYT32000145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa53ad5305fa9af48f5a2180bfa1553cf93501721f55c9000729fd5f11f704c6a. 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/DEYT32000147.