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 0x9990399f4cbb468254dd4e4bc27b771bcbaa2145dbe35676ed71d466ce311263. 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/db8a6510-ef93-4e0d-8238-43c3aa6e4f75.json and https://artists.proofprofile.net/proofs/artist/db8a6510-ef93-4e0d-8238-43c3aa6e4f75.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 0x3742df09793c599f903e003601210f36634ce789b45c341fb5647d09a38655f7. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FR9W12351464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb65a9d324bee6067116fbb353661ac1824e593751164bbb2b5e1833f2604679c. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FR9W12313353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf577586300cb636a8da562d34eeaa45376874f9a3a4d7f73637a3eb4cfedcaa4. 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/FR7O52300550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1210fa0a5d3ecd7587a63daec4f6ab6f79436e68eca3c9536ec03ccf7130ff3. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FR9W12363074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20f34dddd97f34ac10186dae5d9a8d477c4cd7f4ef12dc9c7e061ab51826d13a. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZTB22205089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6db554c4e50174bd75fae39afd16944736c5822d8639b87a3597ff176826dde7. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZTB42230265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20f34dddd97f34ac10186dae5d9a8d477c4cd7f4ef12dc9c7e061ab51826d13a. 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/QZTB22205089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd1f4cf8158c040c84ab2c3905d788a73bcfda2062fc74556668389d8740f8cb. 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/FR9W12313351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca35b4bb5203534b922ce7193f0f371c2912ad28e65fbdc2f8b3e6a7ec7574ef. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FR9W12313352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb65a9d324bee6067116fbb353661ac1824e593751164bbb2b5e1833f2604679c. 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/FR9W12313353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dad17864f659640dfedf32df8036be9f07d1084a518406faa7cebec0fc37b1c. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FR9W12313354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf994a89f57061e0a8ce21b3aecca67512b479b63c8cd8ebf3c3dbc0b471cc9a7. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FR9W12313355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x046c76d077b638370cc7d6cac83c1328ed131aa3b8f335de36a0aa8571107788. 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/FR9W12313356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf48da7093a094368736120766612beca005d230fc6dcfe7449afac9e72291f38. 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/FR9W12313357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d1e9e86970f8c153c30efcde1661ad8ab89be851d7a7dafd043cb6087b3cd08. 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/FR9W12313358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16a8163b609a6975a56839e5f1bd7581096738f2361f27c70e6adbf4aaade5bc. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FR9W12313359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf577586300cb636a8da562d34eeaa45376874f9a3a4d7f73637a3eb4cfedcaa4. 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/FR7O52300550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ebc9429dc6eb7a43b4877e7c769d8acff2af3a99755f42f2040b71125d58918. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FR9W12420180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x935802bbc5f6f5646a8952cdec12145abf1a566e96027ca5f8277ee30c3da8a1. 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/FR9W12329103.