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 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 0x5bbc54769ad28ea4cf6e41b3ff44027c3937b1d56bd5b79e84506b6fba968b6f. Chain 2 (Bitcoin): anchored in block 953641 (2026-06-14T13:54:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/392f05f6-32de-4a03-9a85-af7f05455f87.json and https://artists.proofprofile.net/proofs/artist/392f05f6-32de-4a03-9a85-af7f05455f87.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 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 0x9a6eb2be93b64f4c5bf653ec3e4b07de6b45f5fb244bf74a06ce85b3b2f6f62a. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/GBLTF1800068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e7f879b40a6f2952b2763804512ca8a7136f8279a0d1f33fb28fe33fd85b2f7. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/GBLTF1800069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb26d9a0f00a90ea00fadace57d8a253f2c277ba13f18f715c872daeebf26d689. 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/DECH61700001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48fd41e396e917b2ba4ee89f22bb0fdf54e365e466f66ceab25e1ff0ded64c55. 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/DECH61700002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98aaf2c00b3d6610ed68a70a73d15467a1fb4a9d3fc875e86a79fad7f84a63e6. 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/GBLTF2300041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe99730ce63ae320e64bb296d4d4d6c2b1e32b304d7deaa60a7fabdc9bd78fe47. 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/DEH742227024.
Morning Mist | Inner Space | On the Edge
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe796cb51b185847db17cb80d5d4d00d790c20d0090e688900eea7548ce6e4265. 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/DECH62000982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8acd04258ba02c1e9262a8c7b39b5504b414367547d9b30f27fa2c4474697d1a. 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/DEY472085952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x988d669d338805ab74f442ea4a8912328f9a05526703c1ee1b6652a3158d1b52. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/DEY472085953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2576e8a73a4be4461bc407b12005a6e610eaacbaaf5ade7c7465bee8f2e36cad. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/DEY472085954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dcba0733dfb5571576f40cc5cd516406a24a5450bbddeb95c4b254c8a67d64d. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/DECH61900191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a0292565b0faa0b5a84e29d8677a345ecf57d16412476a42f7539ab89cfae9c. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/DECH61900180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6e137425819968e63c3eeafe4265ac683bdfca398aec70678306f04f9ebe7aa. 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/DECH61900178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94c2630ef1d02283f29c5f47140c986bef2ab10635bac7559928a0726482025e. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/DECH61900182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1adb25d088cf10b5b1df74d429a16b392abfd21e0610dd9b58e7d41a696cf1ce. 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/DECH61900160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66b07c8e2220cc1e4a240be627f5a227890101621fb5e09a73525fc53425b29d. 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/DECH61900157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x357067aab090ddfb9b0e9f142d67650839944fb3799191eabf5de01ec7ae3002. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/DECH61600083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x758649ce7960e30e327c21c220273d557081481fcbdc39cc987335669af288d8. 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/DECH61600085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46f2d0d7ee21f736fec4aae5c9b622d5a4342f6d8ffb59ed839e2267f12b11c9. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/GBLTF1500026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x235b9299d099bffce57da672f075ded451ef738a02224a270abc2df278f9249d. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/DECH61500252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c4f813ac4061aa60fb5a8e3f414d46599bcbc49e2e80a6c30d9af3c356d54a7. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/DECH61500010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62425baac746c9ff359ff9450006920a431c589ee503c505d8c50dc884340c19. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/DEQ201401315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d114932330423f7b4dc066dd0f61ddf80660f19f1eb0ac1b81819cfa825c8d8. 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/DEQ201401314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa72339f8458279e38cbb794685caaab30f6312f4b01e6106bc94cfff8a2bbaf6. 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/DEQ201401316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1150cd8ee92e64166f216ad3bacdf35f6740ee9ca7be3a0eb945f3717eb44d4a. 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/GBQLP1300555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e64c0ace15f2e74e1c7e8250f0ff46c5e0b290520c3ed418a185854af0714e7. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/GBQLP1200267.