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 0xf9df2f8954e1952b128b2b1c3172e6e3e83e3f08e58f6ec4b4be204c85d27ea0. 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/f2a8420f-09e5-4899-b5ef-356dddde74e7.json and https://artists.proofprofile.net/proofs/artist/f2a8420f-09e5-4899-b5ef-356dddde74e7.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 0x2467cb6cebab603e1195e7c7b48da21553b3dac8238f0b68b82c3c04baf399f7. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/US83Z2313205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6eb515734b7fe214b9abc002fd5339bce2cf6e9d18851ed7ef3f6c601e8dca9. 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/US83Z2313210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d4e84d988d5a0237e1323cb007113d3da9d115a6b43e6658c2f1ce4f1628605. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBKQU2191226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68702830a5096f7318b6f54ddd74d1d73224dc84575fcc59d3964288850557b0. 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/GBKQU2191224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c3ff056079d963397b0b0fe6ed0d85ca183123c003d17f6fe9e4ad9a75a1a43. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/GBKQU2191225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62b780fd30f13703adf0d90163b5bd327647c1b07e7ecc725f60b541fd883bbe. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBKQU2154133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e71c07c268a82e16fdde4188bb860d17dc547d9d3f163562896993b4b3f882e. 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/GBKQU2154136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98a630cd4db40c12656555271207c8f7ae01874878be25e40aaad1b4516c915f. 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/GBKQU2154142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b7a4eb9461bddf335cc8402c8329355007069a4f8e28c8fecf3ebc7c647d170. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBKQU2154143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7120d103f2247610727d2bfe7f580a6580806ed8385df97cbdc21237f0a78802. 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/US83Z2212935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74d8fbb98c51e7eb876fbca258714592c3ca2ea3dd9c7aa19c3f9fe744ed82fe. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/US83Z2212936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d69d5c179b883ef2e052b3aa167b176c66b1506025ca52c65776d2039561c0a. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/US83Z2212937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x592b328a081023322d10d534d6260650acfa6be9c86076c997b7785fabe50df5. 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/US83Z2115128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58b8da6e72a6dda0623a889e8ec7a7fad946a8f8296d67be130cb0febd02d249. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/US83Z1923175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7133b57d17b517a3ca87901e28998687f735ead0807ebfbff390a6f2e4c947c5. 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/US83Z2047091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ef2e93175f0a504736841fd140c77f847e4c1c099f167146ca725ab22053a56. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/US83Z2495261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf811e72c900614cce23fc2b5b42526b6771c2f661e7a08a000bfbb6d0c6cbd0c. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/US83Z2495280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c65cea6f97b012e14148dbcd7f8ead75c71cea77430a3e1486fcd1a1b7a607b. 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/US83Z2322795.
Acoustic Pleasure - Michael A Remix - Mixed
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c8fee6aab6147500cfcb50a923921f06bdd50c26bc8310800a2df08f3826d24. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/US83Z2427719.
Colorful World - Heaven INC. Remix - Mixed
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c3aae63fe8c859eed99b06118903a7fbbf48cea00926fca5caeb1df7d184cf0. 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/US83Z2407072.