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 0x2dc48208c5c3c9fad7187abe1412cb4a1d8b44ab28f07bfa612dae7869e1a10b. 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/c80be66f-d7a4-4702-bf5f-4d21e570a28c.json and https://artists.proofprofile.net/proofs/artist/c80be66f-d7a4-4702-bf5f-4d21e570a28c.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 0xf8edc71b7406e91b43e4ce4b9df7186d94d14910d97dcefe050c403b62b32732. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/TRBTJ2000009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8108e5f1ccc2d2abfcc8507a8db584a5b90c6897974a1ca8fc7334a4366d300. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:34:45Z), 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/TRBTJ2000010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35bab8580def41ff3f6538e6a9a2b167926bc0ac0bc607c2eaf729bc2de8fd39. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/TRBTJ2000011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b0c2662237f947cd2a674efd4fd248e77dcafa6a745c973c8987b1802d41832. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T23:53:00Z), 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/TRBTJ2000032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2f0670b4e0435d5bff34fae9e3d89c6a6b4d137a96e40de331431cb547f625a. Chain 2 (Bitcoin): anchored in block 957772 (2026-07-12T23:31:17Z), 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/TRBTJ2100029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c458d6fb2832c4b1c649f8a0edc7d174172017c00ca11a88ec86acc7c2d7a42. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/TRBTJ2100031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7dcefc0f0f55918e0e168cb667c55c10361f960f209f2adafd7526c1cd758da. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/TRBTJ2100012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0562afb60a6e09a24100ec4524a96f98fdc22ebc8a2fd21c32aefbd034f5dbe. 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/TR0112400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14ca6235778e50c89f4241501007a0a9ec10a760a3835fea22fd0a2ae0e77f9f. Chain 2 (Bitcoin): anchored in block 956620 (2026-07-04T07:11:13Z), 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/TR0112400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a11842cdde9ba48dabaef4ce41b2945ae5946e64ea298ffab10b569de1bd3eb. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/TR0112400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x060eba94ce46fdc24c25657bc5d9de4a9fc4d1096fabd4093770d60c3015a2be. Chain 2 (Bitcoin): anchored in block 959071 (2026-07-21T22:56:27Z), 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/TR0112400012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75c540a80306963211e22cc55e96fb647e6553dff2a3f56389ba109562bc5314. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/TR0112400011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aeb73128ff7ad731308963a23d4881321172d45cac02bf6e571037e9546984d. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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/TR0112400013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ff768f4e45d7f5aac621c25baf543194cee1352f3c48f08ac50aefa3c812156. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/TR0112500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2817144c674ac687bd2d385d78b1d7085fdaf94d9437bf570c9fa6cdf097ceb. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/TR0112500004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14ca6235778e50c89f4241501007a0a9ec10a760a3835fea22fd0a2ae0e77f9f. 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/TR0112400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d3a262f914de68f8d3b0ce7f979e514f0cea33eceb0564e97edd0d2a26e0f47. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/TR0112400010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75c540a80306963211e22cc55e96fb647e6553dff2a3f56389ba109562bc5314. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/TR0112400011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aeb73128ff7ad731308963a23d4881321172d45cac02bf6e571037e9546984d. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/TR0112400013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ee0ad512500432a455a60c26e3e43ae31543c58e259c2614e8fcec982016933. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/TR0112500013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcab69cad1f3e37a4b88dd882b970c1150c6783f216f86a5ed3a0c4f18928cc9a. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:38:53Z), 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/TR0112500016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x654710be9c961d0ce11b446c3eb92a7f11699c05a447497ceea58c50cdba9c22. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/TR0112500021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacb8aa41971451ddcdbf59bd795c272f25074f756fd20ff8bcd084eacb4deea0. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/TR0112500022.