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 0xb0ea89bdc1090b8893f8e5c1844a3d92d7101b39e0b17716e73184da860c5279. Chain 2 (Bitcoin): anchored in block 953625 (2026-06-14T11:37:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/23ddb787-f613-4a60-94e1-2ebbf287cc74.json and https://artists.proofprofile.net/proofs/artist/23ddb787-f613-4a60-94e1-2ebbf287cc74.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 0x1ca4db02081270f77c61c5fa83efeb063ec006ca7a312e38bdf5c45e1d8d470d. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/TCADE1737283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a6bdf1a7368d0c03cc0d65ee0a786ab3a318cc863019e4194140c4495413736. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/TCADE1737207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74e2d2b5e3902cab7c3d3f275e8159170b1e530f17c4636eed97e00055b5346b. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:30:54Z), 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/TCADE1737223.
Yufyafisa (Alternative Breakaway Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2b672d517e1d8e8856022bc765e20a144a07520c85cdf3cf28148625122e8e5. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/TCADE1737229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d7d48c4bfeea920014842cc0e2ff014073a27938c839566a584a367ad5b547c. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/TCABG1281600.
A.K.A. Pella Presents 2012 the Year in Review
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b64013033584b602a9f042f1242791ed51cd9056fc1d8bd82aca8168b3a06c3. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/TCACH1531875.
Ponies (Turning Around) [feat. Aryeh Kunstler]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x473d46c992e048113bf9e32e650859cd3c77f70b7cc6ecca9804e3995596c8be. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/TCACH1531882.
Hashem Melech (DJ Mikro Remix) [feat. DJ Mikro]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01319b22aefd9701b0e75cd0c555ce8243489c5970c8fac78d47a4b3f9a2a946. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/TCACH1531893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x067c5f587344ab49a9c84a0b0a59fc1d85a390c316826cd31c82714e1556e47b. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/TCACH1531896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdca6026285d2b037ab05f9adcb5308a9c2b1ddd34c82d1a5881efcfdc72dafa5. Chain 2 (Bitcoin): anchored in block 957026 (2026-07-07T11:02:43Z), 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/TCACH1531914.
V'sashpiah (feat. Dovi and Yanky Brazil, Nochi Krohn & Eitan Katz)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eb7f0f5190bbc032fc81076915bb3beb5837b70aee9fca4665b25a5e92ce7b9. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/TCACH1531922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66e95037c30214c41c9c019aef4ec566c911583d7bdc1a5a367531ddb1fc2aa3. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/TCACH1531929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cfd0fb9ac13b82a86b4c46a5c1169be6f95cf8497e88845a0496cebbd1c3f56. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/TCACH1531938.
Bike4chai! (feat. the Bike4 Chai Cyclists)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad6474bf2bf8aa2e27a0fb865064481d5f0a4b4a8eb981ea3594530a1847d3b0. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/TCACH1531953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ed9b5a0d68e775d88ec7fa54eb39ed6da0e4c755a5181a02bff2625c0c57c08. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/TCACH1531912.
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 0xf7c4546945497c8289c56547faa75e3738eb2d4701348b401450755f2396a853. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/TCACH1531920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e509c6bea27fed6610bf11028c92813948b9daadcce3350e624861157b29b1d. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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/TCACH1531936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd34b4876d23a6d3ab8d9843f2f072161776d65c3261519b6680280c7f886c870. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/TCACH1531937.