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 0x88fcbb49427998baaac2a0e8a9521d47ed0caa0fa450b9e4069c45afe9d63991. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e4839e80-7607-4005-a3c7-cb960608ea0c.json and https://artists.proofprofile.net/proofs/artist/e4839e80-7607-4005-a3c7-cb960608ea0c.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 0xc06dca52b5e6806db3e457797ac59d7a0f6a9b71ea82baac3c8660ed6bce3672. 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/QZHN82054129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe828079866f516603b7b1d4437e5de9dc87ab66138a05827abec7fd777bfe416. Chain 2 (Bitcoin): anchored in block 958653 (2026-07-19T03:54:23Z), 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/QZDA52199596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea6e2d09e2cec16f46b59d1b1561dcd2e099b1667de2d03b919866fbcbf44f64. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T00:06:49Z), 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/TCAIU2402523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d8a2149c5c875944eaaa8385a7f97dbb738ac2366ad3b28dd4e072feb257447. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/TCAIU2402539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e6bbc59bb59aa24d4ae2861613ea5d08d1a5b9f2c7c0989ccf40976d0538284. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:32:56Z), 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/TCAIT2402557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccc414c5477714c24df6669acd8f665e24ac0bac8906471f88e9689cb99ab1f7. 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/TCAIU2402595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x105c94237fa1cc90006de9c9c6ddff12fddae5d37ae03076658c0ad132ebaad7. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/TCAIU2402550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabef74b8d932640a9650c1c72dbe8e1ca0af7fba1524918f2f0bb74635d9b878. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:33:25Z), 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/TCAIU2402578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e6bbc59bb59aa24d4ae2861613ea5d08d1a5b9f2c7c0989ccf40976d0538284. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/TCAIT2402557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4435d542965d1d690eead2ea06039c58f0cc64a58d46f8afb4b65eea7a7dfdc. 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/TCAIU2402530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9502f5c216b0c822301c5f91fe84b64cbc307891c75fcedefd4299a182ce5a2d. 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/TCAIT2402634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb51d570b019b90fb1efac5b5a990ead1017ffa7b13a6425b67656dfcc63b35c. 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/TCAIU2402604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x414b770637c07c2da99f524a2f2c3280a4f3e7e3c680535498980967d046e85d. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T06:54:07Z), 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/TCAIT2402615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d93532b79e387c2c509f3d8d7c485c5ed655c0154c091d441d0a982ae542ea7. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/TCAIU2402649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70473177f2bee79f19ea0ff639ad0e233a6d9c9d290b700d5b52c6d21f2fe9d8. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/TCAIT2402569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2565fcd3de2f4642267cf27e877c2136ee98976c1dd6956faa13e82f55dcb58b. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/TCAIT2402642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4435d542965d1d690eead2ea06039c58f0cc64a58d46f8afb4b65eea7a7dfdc. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/TCAIU2402530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d66b4e27123e854b0267bcbe564b2c9f5ba70a8eb4ef3a0703b1e87a2f90a32. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/TCAIU2402499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabef74b8d932640a9650c1c72dbe8e1ca0af7fba1524918f2f0bb74635d9b878. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:59:35Z), 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/TCAIU2402578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccc414c5477714c24df6669acd8f665e24ac0bac8906471f88e9689cb99ab1f7. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/TCAIU2402595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9502f5c216b0c822301c5f91fe84b64cbc307891c75fcedefd4299a182ce5a2d. 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/TCAIT2402634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x827bd644580a052bfa673ca215092fe340ccf17253dd8e76111c059b5c65fe7d. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T14:07:18Z), 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/TCAIU2402491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d66b4e27123e854b0267bcbe564b2c9f5ba70a8eb4ef3a0703b1e87a2f90a32. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:04:47Z), 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/TCAIU2402499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2565fcd3de2f4642267cf27e877c2136ee98976c1dd6956faa13e82f55dcb58b. Chain 2 (Bitcoin): anchored in block 958204 (2026-07-16T00:25:39Z), 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/TCAIT2402642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5de0902823e6107117576c3389ddc9b4faf6a3446f8e84a7f0bbffbca5675912. 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/QT3F32421648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xceb48d8e0634ebd2d3f41013e9761849d9f9e0f57fbf8ab3e0336ed30886599d. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/QZWFL2587418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6920818161cf04244724b166da831af8ef5c95e952f291a42f58425a23dc404. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T19:03:20Z), 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/QZZ7M2551426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42e16b149a1e94a1ef562f3ce6990b0c443ea3fa13d08ae0f668ca0586aea9e5. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QT3F52596977.