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 0xef8efc49b36826acca1d54fd56854a20bffe851ae6942a4a9124f5504fee7409. 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/df3f4055-20f6-4395-bcd6-4161a026faf1.json and https://artists.proofprofile.net/proofs/artist/df3f4055-20f6-4395-bcd6-4161a026faf1.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 0xdca36943132b5355e4462c3c1349f3f20b0748ec93cd3f7d81ab6cdeeebd5fd9. Chain 2 (Bitcoin): anchored in block 959009 (2026-07-21T14:51:53Z), 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/DEQ021801907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x149a1e29130f2d443bbed15ccb429c2a307ebc25c870213b1c5695d93a866f2d. Chain 2 (Bitcoin): anchored in block 958124 (2026-07-15T10:59:38Z), 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/DEQ021801908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbe6c96937daef1137c7934b41372ec85365586738d08ede6fd9e5411bb2806e. 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/DEQ021801911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9b0baf0aeac4e23ca69b5934ffe0848f2d1f96996141b234ab65ebf8bc25f72. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/DEQ021801917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53e8a4c13a488c804aa9b1aa5c313d1bfd7c9e88cdf1de17280e76446bb94df2. 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/DGA062017557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2929a164fccf2870b8edaa74bd0b1390f6a1cd6fd893934c2b3b5f99345897cd. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/DEQ022119455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a1795505afeb4dfe23462484301bcafd5284e1ab1b1264a7932cd3cad6309af. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/GBCPZ2221315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14088666e0713a5cbbc906df761dedcf38bd78c58e49f524acebd5927ecdb0dd. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:59:47Z), 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/AUGBT2238412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2714a45bca663163ef70ebf98a0dfda90e81568ab4bdfdbf2e3918b9f0c05146. Chain 2 (Bitcoin): anchored in block 958920 (2026-07-20T18:14:22Z), 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/AUGBT2238413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e98d4859e92db3543a60e46178bd0e91abb7f6a0d165b901524e6d9f485d36e. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:44:06Z), 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/AUGBT2221883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad7dbd3caa4f517c7be7b2296e0b457008329f171a3fe8b9f8979808da9bb457. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/DGA0R2448270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25bbbcb47fd89c0584d668bd459d1c8c1f0d49add9d3e86d9c8ae7660c29b54a. 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/AUNV02300120.
Rollout (feat. Jay Prince, Scrufizzer & Close Counters)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc77d797e6d2f980f03fd7fcbf2e0f8c1689d942037a52e714c1c9ea5dce84224. 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/AUNE32200005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f5317afd5263c6a254ec25612a8f9bd37f66fab977de3579a6d87d02762c9ee. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/AUUM71900961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d7296ac97b8b433d98f3e0eb7c9831a95809f358a1494e7f71b1529c45d9614. 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/GBMCZ0601759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f6738ee4d45ef335abadad9f70c70c3e47d76ed3e262a5be93373620acfee0d. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/AUNE32200014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2389f60cdfe22094218af2fa76687f197c46273d3c1cc323a2c90a8d159c038e. Chain 2 (Bitcoin): anchored in block 960268 (2026-07-30T14:53:07Z), 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/DEG932003991.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78dcd9a88a862884cee4dd5270bb16dc7fe940b128afb4cd5ab9ccbb3075d40b. Chain 2 (Bitcoin): anchored in block 960387 (2026-07-31T10:06:30Z), 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/DECY52302171.