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 0xffa95e092abc6a01a5df0ec84d4ba9a44ed270611ee32481d487d6dc35e17c46. Chain 2 (Bitcoin): anchored in block 953762 (2026-06-15T08:21:23Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b8652297-647f-4fcb-a46c-b4661962f562.json and https://artists.proofprofile.net/proofs/artist/b8652297-647f-4fcb-a46c-b4661962f562.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 0x481069ff3839ba8da39b7a80ae6257a1482e4ce4bd6ae64cfb88c65df5c6f671. Chain 2 (Bitcoin): anchored in block 960298 (2026-07-30T19:26:00Z), 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/QZPLR2442265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27d60db8b13afe61f6634202dde347137d3bd2535b52b693c678c08e1dfa32fe. 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/QZHN82436786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ace189c6403b3d0a30e46f1acbca0778d1939370810623364808403d7eaf4e9. 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/QZWFS2309589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c50a030c76d10a5c34aeb22003061feeac5cec5375e25e0424118acf8f5b7a5. 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/QZNWQ2365875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9147b01d27a44fda3eeac59c778890d84ce16b877cce30bf352069fe691f4737. 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/QZTB62294540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcac20739039eb0a39909e05ef046cca3ed8df25d7703b0f64029309f5f4066f. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/QZK6H2224623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c04c53f54477488a8ca4454af9cb242ac3c838b44c26f1ee2023d6b37f097d0. 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/QZK6Q2075654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2299f7ade10fcaa5fa109243d755b73b851223e50e6c9accb93658c58076d7a3. Chain 2 (Bitcoin): anchored in block 960435 (2026-07-31T16:33:26Z), 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/QZES72091052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b18af4d81f2fda3584f398e94094f5d7cf73e7290a3ef3d02029d490820b7bc. 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/QZES62063438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd4ce616e65ed223d4208cf40b04c358fc43aeb8f0827b2259b7e0d6c7f28385. Chain 2 (Bitcoin): anchored in block 960503 (2026-08-01T03:41:24Z), 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/QZES62063432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22f5ea0d5cd9e1c4ec145c98949bb6c2789e1052a9c2461f03e088a957c68881. 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/QZES62063434.
Lungpa Di (Tibetan Song) [feat. Tseten Lhundup]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec83cd98720305ad0d08700d37970c189041c9e3ce9e9e96e9385d6fc5f0f98c. 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/QZES62063436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa82e7d3a70be8012de5fd4b2f4670e0aeb4441d1e4728374b750f951835835bd. 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/QZES62063437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3638ded05b2ad90eae3e43f5b5d40cfe20af73d5d6dc11002c9fae8701fdfa3. 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/QZES62063439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75134419723fec154636576d1e9c470822fed254160974885d7ca72fb46d6b49. 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/QZES62063440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfadc743773078153389a6b410763adcb4fcdfc3c681ab4d18519df2e556f17ce. 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/QZES62063441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7738ad45a4e337a8a28ebe1d5718dfb952ae1c0cdc6164d762a436331711b2e1. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/QZES62063442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14df20cf45aaeb2a78eae29e9659fd9244f41de2e545aa76333d1807a6e231fb. Chain 2 (Bitcoin): anchored in block 957240 (2026-07-09T00:47:38Z), 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/QZES62063444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x486065cbd77580a0167b9d88347de684621d033dc323b006769bf4155380824c. 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/QZES62062449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55bc83ef1beda097d18258bc97f1cfa94b5d148bf83bb9ef1ae216d104db4023. 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/QZES62063416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d29bbce50d2423627dac82924b947bbc5e5aee0b235ec72983b281f2e110b64. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/QZES62063411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd041d16d9cdb78f9fa8c0afb7758d628e4b4cd9d245d205f1c7d158fa56afc7f. 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/QZES62066163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf511a329eec46f1358b2e8ac344fd8d7c916eb8a70d5d8131ca04de50d956108. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/QZES52071076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24c78d3f787b0fc70a3faa149025cad18c8eb925f56a96728cf2e073d82e9cdb. 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/QZDA82039031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65c495ac83de65255671ce88068cb524e995028dc8151281d064b06b94b60e9b. Chain 2 (Bitcoin): anchored in block 960503 (2026-08-01T03:41:24Z), 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/QZDA82039030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0f76a769336bc855112f66b02275be0a48b835a1ab2d9c2da0d05aa3cc6e674. 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/QZES82054863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb79983a05e3f6e86b106a4379f0365a30abf50b90fe8b8a3985d82335b42653a. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/QZES82054864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x838281eef445d559b8d8e54760a00436705aebbab7b85358ec6df4329e9a0ec7. 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/QZES82054865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06302532698b2f5c42a75fee96537f2dac507746d7c0f59072fe93b409947af5. 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/QZES82054867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x403f85d0008e67988442050d75d63a84dbbbadbaa49829ca112a8e91fe4beb3c. 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/QZES82054868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa889f3ff8ed0abb2ff35e26eaba3318b32272c60e69614da514c7581fc87a0aa. 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/QZES82054869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4489d76adfecd5454fd0aecc89ffde5b7778bf44874f7b8241d2223cda20e00. Chain 2 (Bitcoin): anchored in block 960225 (2026-07-30T08:04:30Z), 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/QZES82054871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e1da45442e72e6c1513a81825d719787c63a0f0e78e391b7b230c6f291d5bbf. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZES82054872.