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 0x774bfd14afdd1c68bc1ec8ec745ef06027100aa4b9fa6935441b18029665412b. 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/1655b66e-ddd6-4270-8b2d-5053052f282a.json and https://artists.proofprofile.net/proofs/artist/1655b66e-ddd6-4270-8b2d-5053052f282a.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 0x10a0cf6bd5359c12ea9be777d514992ba7661b93167015ab3ed01784f94cfd7b. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/QZFYX2055039.
Running Out of Time (Remastered) - Instrumental
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14b798d636bc100029cf02e49a93a696fe2e46c361c922bdf81f7b6b071ecf7e. 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/QM5LC2300279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x584bd27d85937f07f90f9bc77938a3131500958960664d6c5d3dda6bfea4e5b3. 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/QM5LC2300278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85776fd8fe95687f29d80a0877d920e9bd88a240dc7b9fd24ab262d777693093. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/QM5LC2300280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfee82eb2c57e64199e1f81c0d6c4c38e72d5357f92e3de1a11042135feee1a75. 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/QZFYX2055041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf089e7e169014b98383699342598d181de9f214e4c6858c6f7dd760c1889abf2. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/QM5LC2300281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe59e9d27552c9ee10e68fa7ec23d73b26bc732582d8aa9b579f2fcd0463d79fa. 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/QZFYX2055042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x027cae7867a6be66fe3fbf9612ed8eb57f9b1298b2e485002301927a4dd8e515. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/QM5LC2300282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f1a32b405e2129a18404a98c60487756457a7f21ebb95a3ea07e9ad2e4a8b4c. 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/QZFYX2055043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5b88f46834485639cf52c8c7e817f57b82b559488256f3e20bebb708cc6cbed. 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/QM5LC2300283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ea281abeadae7c3d11878ef508a54d82429fd16ec8d973da098d1d067b9a5bf. 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/QZFYX2055044.
Running Out of Time (The Anix Remix) - Instrumental
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e2be63d074327ae2edf3f2bc177a44a08a457e39be9dc2325e9d6854a3cd80e. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/QM5LC2300284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecb1e147f818968059c890738a67f2f739d8879e5e7a5fb3fbd2ecc1d9a24366. 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/QZFYX2055045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57a2c3ff2fae6d226be8067b5f7846f77b3990e6fd159a90679a57ddf082b9e0. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/QM5LC2300285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4100202c55c4301ede7ce4d796adf8d7c7a816e2310a7e34a0a977f0b23a178c. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T14:03:35Z), 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/QZFYX2055046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef67ae1b6e4f799f43fd76b3fbff4866d92485a3c330aa316207f18a3787f915. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/QM5LC2300286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c3b69e414eb810ca06dd236e3465d63c2e4e0b85f0e22d25028357c0f27a2d2. Chain 2 (Bitcoin): anchored in block 960113 (2026-07-29T13:38:16Z), 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/QZFYX2055047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb34f6f118e923a88ab2e5043dd4b6166675f5151069125190b95a07a5cb485e7. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/QM5LC2100242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc12bed13d14352009d7444c7c952971f81ea9c957b79210858cf211517efb98d. Chain 2 (Bitcoin): anchored in block 960111 (2026-07-29T13:21:01Z), 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/QZFYX2055048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02026b0dcd3732ae9f060fcdc62362977effffd2a67de2ef304cdc5f285acac5. Chain 2 (Bitcoin): anchored in block 959145 (2026-07-22T15:39:05Z), 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/QZHN92137589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd85388796af94c6302478c24c07b6598ae35552530a79fe54b6c622ea72b2013. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/QZHN82274417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5facf6f3ef47c17a3fa581307109d011d17ba6aee4cc86af5cdb6bad9c8d552. 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/QM5LC2100234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd68940e50900815238c7811e2ef8a36901df9e8144625145c65d8287421c295. 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/QM5LC2400341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x511c3c5f2f50a36cc59e33296e7b3b519348540033cdbee0635676591b43e334. 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/QM5LC2300719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59dd0e91017e213cc16c099326c5d00ec754ed57f8df1d8e5acf38bea2109a55. 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/QM5LC2300605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44f8de3d194ee9213e84963784e6e3392f7a07aece9b0d5a232232b64b16c56e. 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/QM5LC2300498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5895c4ea5b050dbc6dda553b3c2a11a10fc9958e6d802091e29e2f06172c8f7b. 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/QZRP42137793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5facf6f3ef47c17a3fa581307109d011d17ba6aee4cc86af5cdb6bad9c8d552. 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/QM5LC2100234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2937f501a18abedac811411a065b1791a4a3468f8782c67955ce92e2883ade30. 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/QZES52095684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53399d7dbbd8d9d034f6d36d67c1304c5ad33097e399f5a9627a007f4373fbb3. 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/TCADF1783220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb89345be915dd5ac22b3a426e04dcf32a5b98533c7eebf3dbf76cf9178af412. 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/TCADF1783222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92445ab5afb348a16cfa79ea94d74537c5e703797b4e0aea14a9d0c1f4c517f5. 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/TCADF1783225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3329a3ec54349e4b3b9cce7c3f68fcf8f835ece27397e9a7d4612518b075aaff. 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/TCADF1783453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea410d6cde51bfe7439b10fa5dedca8d62bc7530a73001f2fb211f7a9a0b1324. 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/TCADF1783454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x387c197a14a7c23d1cc635178d6ed8ffbfebac43429d1a011c8a551f4ba9292f. 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/TCADF1783456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75ff4020065f9d9abcd94b8b38c2bb641b85e65446f223a2ef44bac5fa46821d. 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/TCACN1634611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77ecd188f23b493cd3a4a2ee0ff0431da763d621a5854aa1c78a35eb4aff46d9. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/TCACM1628236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ca4fef0ada9478b95b492d1352f09b18ed796dae196e8f204a4d07c31a95014. 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/TCACJ1556749.