1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x54cbb8d93200adaf01cbf03a5e133e6cce965567af758bcc585202cfdcb743bf. 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/51d487fe-34fe-4ed9-83e6-6d9f0866ee47.json and https://artists.proofprofile.net/proofs/artist/51d487fe-34fe-4ed9-83e6-6d9f0866ee47.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 → block OTSBitcoinBlock must exist at that height 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 0x26493c43c53cee6fb3d73a34817f41017ebde5271119cbb7d8c71f3a06df0f74. 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/GX3HH2453333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe17ec9fa4a01678fd39ae83123672d792af061ff35e949615ecf22ac46c90c86. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/GX3HH2434561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9600b56a77dc66723394f80568fc1ba0c349f3eef6ec91ab49e36cd827fb8c0. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/GX3HH2459423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7f94feec1d44218d61d1054f5601b135031ecdd327b12a5f8331a6012930b8c. 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/GX3HH2401525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbacc0ae7ee936da36e8b8bdea38b0a2e43bf5a22051d78cbf8b6cecad6f7dbb8. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T18:04:50Z), 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/GX3HH2409670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e2acfde206d5584521970452e2dc70f432f8841ddfbcce32be5d6f187a8798b. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T17:35:20Z), 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/GX3HH2447632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5720ddbf901ba12064dc6f64c5478f5272d1ca6b3c9600179aca7460f756cc21. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/GX3HH2413630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9adf410b602a5a34a9f31be0b94b74f1968d2d707583dc39516098c4e467b881. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T18:23:14Z), 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/GX3HH2428876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd6907903601dabf79f591bf960951273203f894279098ef8644895e44d9d1bf. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/GX8LD2590886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0eac89cb2f29830ac9aed6601a345a2cae9c8fc76a4b267889f15997b0d9b82a. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/GX8LD2549693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefea03638cc452b5f06931988ab22701c7c6b8f5d37d8124ce352b9a298da86b. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:30:10Z), 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/GX8LD2549938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e4d6768d945e7794c04c050981d32725b2914b66e79886c3f0df2b130976a0d. 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/GX8LD2530126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19b9c169e654df67ca7346021257c1281f75558e528a9fac783de05b03bbf313. Chain 2 (Bitcoin): anchored in block 956482 (2026-07-03T10:33:57Z), 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/GX8LD2525274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x025c5d3e75d563d6cf1b2490aa51d3b24c4397e9a678a5b71c02468e1674a145. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/GX8LD2559022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x674a4bab9a1c33ac8cfa8871009f8edbb9e456ede408cd688caa3dceb52e3520. 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/GX8LD2561857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a6926cf735ebd59365cf6fcf0e05131a417b98ed59552e13bbd557490869faf. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:59:59Z), 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/GX8LD2575237.