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 0xa5481018897ed27af0929ae94180887fc5725112410a52dabe9ed3c3f9c53789. 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/6c7148a5-e35f-4903-bc40-c6309a2b1c98.json and https://artists.proofprofile.net/proofs/artist/6c7148a5-e35f-4903-bc40-c6309a2b1c98.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 0x657af67971ce7215a31b4a246f9deb0785731649579a6bb96794e9a5173ba26a. Chain 2 (Bitcoin): anchored in block 959065 (2026-07-21T22:00:50Z), 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/FR9W12120777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b6cfcee0b2ba29eaf7a9e2a47bb7d4f1051be0ae74b007b88893540c3accc3a. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/TCAFC2084883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x857706f4e4911a81d9051b86a8e5090738830a5c56a093d9d9066891cf52d78e. 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/PTBM12100068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c317a9568950a081d507fbe3f03ba97c8ba9310ef51785dc31d1fa2f331c1a5. Chain 2 (Bitcoin): anchored in block 959065 (2026-07-21T22:00:50Z), 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/PTBM12100071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4c4b9cb47a24daa691ac9e244a33909b2a5a06075abfaa2568b0abb708d001f. 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/TCAEA1999143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d47b5de74ad5af108777f5ebad11977881e1f9f04b5cf9eec60a5f2c0e10699. 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/FR9W12131624.
Gangway #2 (AreUstillRiding) (feat. MKG)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8481e5d44f6a201c79d5b5f3aa65ef990897afce633c7213f538b581f79e3ef. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/FR9W12238194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9df7db4bce64bcf11ee3bedb6da7a2c4b457470f5cb99754e9792ab95b1b0e9c. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/TCAHB2350369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf61994ffd62d81b00780887a92762a579abe617cdb5a5ba0ec551bbb0fd35033. 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/TCAHK2339218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x518907c1427cddcd75b42b0094fec1c573e8b9c9789e772b9c63619253a0768b. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/TCAHS2301458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b1a288dc1b31e193d86f3fc4c31b97bf9f7411fa8230d34c9e1e95a6d3ad223. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T04:59:09Z), 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/TCAIC2441497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7099a18610087b2f40d6d47c5724375c733980cb3d93b71a39f519b68f1a56c2. 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/QZNJY2453210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3cea76babcb1e4478ad668a007d17312f10ef22feb96c5452df11b032d017f8. Chain 2 (Bitcoin): anchored in block 958126 (2026-07-15T08:17:14Z), 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/QZNJZ2469837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d977c3d9c6257498156f0f852671845e1eb39b17c74b7269e814ecee5fa89ab. 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/QZNJZ2469834.