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 0xd9122758aac47f4d1f542f41123a28a57d08bdb1eff1c16faa66089ddfeda306. 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/46f5c74f-0165-4db1-89b1-d4aaa53ed279.json and https://artists.proofprofile.net/proofs/artist/46f5c74f-0165-4db1-89b1-d4aaa53ed279.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 0xcbe73eb2f7d039e5bce2ece8aaa7dc761e9c3a6d78a3af359e415c32e96dbed7. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/GBWUL1801334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x599eed4c9a792357c311ebbcb1a08f3ac5798d381928638521adc1bfe1f05535. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/GBKQU1962779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9d11f0ddfe648746683b05c5134a5602a88eccff461519ac86ed07dd35c153d. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/ZA56E2102153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4b5bf0423a296a293b21f97feaeb8770d18cb61b4a44bf7d32c38ad0659a106. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/ZAG8M2200973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4b5bf0423a296a293b21f97feaeb8770d18cb61b4a44bf7d32c38ad0659a106. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/ZAG8M2200973.
Dreamers Dream - Chronical Deep Claps Back
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3480adde3feba941573c3b2cf02852d50af3e3392596ae5204029bb44034bd38. 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/ZAG8M2200970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce7d87378de68a1e8f588bb27a3300140d744832d25a798e047c41a52e32b549. Chain 2 (Bitcoin): anchored in block 958051 (2026-07-14T19:14:42Z), 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/DEY472372750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0a579bcc847387ca6a593c76e09105c127753d19e6a2c1e4f33ce88c6d4849f. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/ZAUV72400483.
Le Fleur - (Chronical Deep "Claps Back" remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeab0a150534e7db84307680e019ced8f1f7ce7f44989b321749f94192f9924af. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GX3GJ2100084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95ae145ce7a7de6233a6ef731d1b3b35712b6013f6f22681fd6e95797b624ff5. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ZB88P2400366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ab6198cbe9281436ce9c31a0dc02574975812dc0b16f1b5809db549501ecb51. 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/ZABKR2300031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd5c13ed3be4a3664600fe3aaecf482318263c32e74cb9c20da916f480aba662. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GX3Q92466138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x949ec8b89201a7cfd1ad8912fcc42f405992edce49d127428b0d939287ebe42c. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/GBKQU2449748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa47f374886c657127af214b6b82fee150d7490ed62419871c34638d3bafa431f. 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/GBKQU2449749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d35b9fb2a5b973588d5296c1612eb1d8d78411724b7d50e612bd26fe745b060. 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/GBKQU2332705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c8bded9deabb159e525415af929ac162515e1f2078e5308bed3520eced45f5f. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZ5FN2268043.
Be With You (feat. Katso) - Chronical Deep Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa293b9db1a0d4fcaf2f739dd2ee358eeb9df431cf69624c9322b62bde69b5e1a. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ZAG8M2000491.
Horns In The Sun (feat. Mo-T) [Chronical Deep Claps Back]
Weekent Sun Sets (feat. Mo-T) [Horns In The Sun Remix EP]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dbe7c7ab9308b40783f44cc82ab00da8d0d44ba202325da7c5178919fe0881b. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/ZAW742300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b72300f01d2d10c476cea0725cbb53cf6b35add97a6614409ceba89b35f0c33. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ZB88P2300288.