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 0xcfda8de437655de4149f6bf974256b490d0153214dc68fed805821c7e69cb354. 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/e9fb4583-dc6e-44b9-aa03-5bb5dee895d5.json and https://artists.proofprofile.net/proofs/artist/e9fb4583-dc6e-44b9-aa03-5bb5dee895d5.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 0x010c533809e8e2bf4bc6e31bab319316289ed7d7170949112924cf2289120afe. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-21T08:30:32Z), 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/KWA001600397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c4e7dce71b98bbb0f54dc5fe9b77268e1ae3be27792622cbd9a89e632da7f46. 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/KWA002301430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ab853adce1cab8872de9f1fc50ecfbaa1b9bcbe31f97aa39f8136fa7dc0ee1e. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/KWA002400028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a3baa42ba7404777ba1e38cfce95a859fa51b9da9f6d1a1ef4da878b3523fa3. 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/KWA002400782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa36bce2941e39c07ece423b2867770b9888257cc986fe347203fdaa9aede4665. 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/KWA002400757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dcc565c5b8463186f8c5b7addbd236b796119475b1848d13ca9c9d6a4397fa8. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/KWA002400786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0c24958af1966e9cd797699cd635f09f68ed27ad271f26913c31fa4e9705700. 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/KWA002400811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe400f18ea0defdeda92deede928d7b0bf6113387c373ffa36508971790232842. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/KWA002400945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce37c4f86937a68edbc41beee1feb875317d34d7f831591c034d8585923a0eba. 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/KWA002401013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96e73c6369831d97ed710dcc07aa62b40c24a0736595874905063c2b2b39f2b2. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-22T00:10:06Z), 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/KWA002401021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0149f9c5c9d36683083d9df3b866ecd945205c0a22f487852c578d97d6a7ab19. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T13:56:11Z), 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/KWA002401070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28a79f6b7fa14d9d1ac4c2e548715883db90c733b2b0168826ccef78bf6387d5. 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/KWA002401169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca1419eed8186721d2e63df0b6d22990b03c82eb4fb4289bc1e0882c83a49029. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/KWA002401770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x286e7da6ccd82dd74e1d74d955847cb95f60534133c35107f37e511c49b1d9a5. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/KWA002401958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47641cc2cee4f55408ed7edb6ed854cc1d843326059db7d3bef7eb6d06adaa4c. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/KWA002500033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x629480b1205d37b2196c3729680c5ed5884fd96e2d7ddba7214255ec9f224d5f. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/KWA002500050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f79c1154bc9beb0f5755130019ce6de747a7b828dbba4d8de207474d090dcbe. 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/KWA002500860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x089f7c5335d8265b6190022a4a547fc36ea1608d2f992f7854c48328b443f540. Chain 2 (Bitcoin): anchored in block 959096 (2026-07-22T06:44:08Z), 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/KWA002500921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeb087c28fc49f7cd6ec7c0dd5750af64363306d27d5773e415062f4643c25b1. 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/KWA002501561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83736e3e7809c0f78d0d153e6435838ca7aef36928e8d6b81b9e0e6d2614792d. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/KWA002501618.