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 0x342ec79b45b8429a6e04a22ec8a9caea624dbe3ca0ed04b6eecb9baf5dd192e4. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1021b01b-1567-494f-8947-fc56b0382d58.json and https://artists.proofprofile.net/proofs/artist/1021b01b-1567-494f-8947-fc56b0382d58.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 0xf6c17564cdb271a73d7ec380b44b748866e24a54351289e74259a53f6d782443. 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/QMPKX1873944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0777ad2419905be0f45cdd4f4dedcf9a95aea9cce727405f7ceff4e33a73d8e9. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T21:34:21Z), 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/CA3R31900015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9921f01a3f1d260d6323eeb0f1eb8931f0b72d7c33f585fd8abe8cf0b1f5abae. 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/QZHN81983745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc34d9397db8682a4053bd41864a0a64a18accfe793fdebe662f96e6f8d5e038c. Chain 2 (Bitcoin): anchored in block 958514 (2026-07-18T06:54:37Z), 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/QZHN51995738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5d335760102fd41b0a62e8ded27df7dfd3a3fc1a491a12b47094041aaa66faf. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T00:01:46Z), 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/QZHN81983746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86a188d13a69cf844e9e38927f5ea8197c2c2257fb6f1a1f49bae6dc17cc42c9. 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/QZHN81983748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x287e32abe4877e42d8a0238461c0d51b58bdfc3effa564e6a50cccc910ab9e04. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QZHN81983749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa08dee5fae2c6c8a37178e5830f3333ac7f5cbff00a23b7bb78aa4a73b802bf4. 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/QZES72147857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6feed708df76cad4eba249368c47e44283e5e63e5525b0def513d2208f89238c. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/QZES72104951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8219278791589b76572357da565132f1eb80750d13386cef6a8d7f025c9a546. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZES72147861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ab4d94509bed82b96b44110d3927c4cab094f1fbcce8fe3e8a4305eb60c2d7c. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/QZMEQ2125840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb370c402fabc79902d7d1aa04ca4fab4ecee35f84d8d39de7aa64ee9d86ee19. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/QZNWS2218164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79bf2bb4e89ba29ceadd08cc10b2611e9114df8b3407eb7cae5d225ef277b13e. Chain 2 (Bitcoin): anchored in block 958218 (2026-07-16T00:33:33Z), 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/QZNWZ2287959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90293fff1f3f535849809dd3ebd4d01b17507965e4e006206c3336533fbec80b. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/QZNWS2252074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb786816e262ab5400abed42d5d599994554757eae538c21c0113be386d7cce1b. 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/QZNWZ2287960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22345f67a4bf8cedd565db8132aa6971a5b2481c78991e259a1a632ef3bd890a. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T12:33:53Z), 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/QZNWZ2287961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x207a8e44453859f798bd1d52a481557f4f44ae6fcbdd5caac6a3d49470c29861. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/QZNWZ2287964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ead917b7e80c0a16fb2b31e80706d114a9fe197ccd4d491d3a0287e727ea5fd. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/QZES62358012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc07400c1d100f3ed1f56031be4e467d1b8fe54a93d5668eb1194e90cadbe8875. 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/QZNWR2371953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c0bc58f188f632e547cf12153eec9cb4e93de8bfd1565a11d0b33eb515314ee. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZTAT2310945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb45092cf4d086a294e63ad99b6ba81e97ad6c356bede7cdb397e4e83d8537d2. 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/QZNWR2373753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d7bd659359e6fbef069fb036d4fec0439178f227e8c15a95ebc673e306fc2d9. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/QZTAT2310946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9097afed44c77b2a61144daa576e5329025c78495fe7e1a0869cd6af16a7b020. 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/QZTAT2310947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1b30261a2fc749368dafbc191795ff128c5efdd9ed60f20659af0f494f3a40e. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/QZTAT2310948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39734561ac5c54fe003a57735b86aaa8cddfed5a6f550707a771c6a840b37f99. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/QZNWR2373754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2644b34ede1fa75852118125d5beefcb1828cf46b2bbd663ce72778e867a9e4f. Chain 2 (Bitcoin): anchored in block 957805 (2026-07-13T04:34:37Z), 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/QZFZ32475795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94e35710c3c285f5637409d7759640a8b49129d0b8125f78f6cd61af6723c476. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZNWQ2475175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59180e9006654d5e1c9654eaa71804c0436c3639f893099ca01423a6afc4dfc2. 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/QZMEP2426467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94e35710c3c285f5637409d7759640a8b49129d0b8125f78f6cd61af6723c476. 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/QZNWQ2475175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65ac1012bf1be4fe03522d09e60342388042fe69c558df7c116df4cfff140735. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZTBB2459071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27890101589d4b4a7df43eeda3f52b0551a5261a8da9965bf6dfa1a775f64767. 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/QZTBB2459072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d5568a1cb2dd1556f7433fa65b405c0b9bb0f3912ab94503825520c86298955. 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/QZNWQ2475176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74ae298c27e776f2ba91afa515395692dd03d8d93fd34f87fe342b0acefdc9f5. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZNWQ2474019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabdf05faea82fd3010fc3a53caaaff7b69a60b2da02f15797c178dbe03fdd718. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/QZTBB2459074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43f695db2dd4b969b1fde045a4452bd932ff55a10abf0d6921cbad651dab6e21. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/QZHNB2441100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbb81ba743ccdf8d0dce6d1225059a59add1610ee858c7ec9724bb8bda594916. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/QZFZ42583136.
West Coast Dreams (Revisited - Studio Recut)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1828a5f8962709ffea74b24c77efd529e9656e7d87ff5b8175b84ae8f38279d. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QT3FA2538629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb786816e262ab5400abed42d5d599994554757eae538c21c0113be386d7cce1b. 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/QZNWZ2287960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcbcf651e1ec5be38f35db7c11ca95cc62b218376e94d88fb125794be954675f. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/FR2X41942328.