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 0x86056b0b1f7cf49526a871b203a9fba52358d5e1e848d6ca3741d3d696bccf73. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5755cd8d-b1be-42d8-95df-22104030a339.json and https://artists.proofprofile.net/proofs/artist/5755cd8d-b1be-42d8-95df-22104030a339.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 0xb68ead7b5361006935edd943c94605cf133a1326b5051c5eff7e2df736d6a1e4. 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/BXIV82477006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14fdcb010e0d441d69a4143556fa6dff1d90b4b478a9fbd09c17438495567199. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/BXIV82424243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a27adf8eda9e11a4fed0d2e6e760ba0de6343824a981225e14337f5c92f40db. 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/BXIV82472160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b049966d4c814df22626cfec39ce4240310f306be3855cbfef5a3f8918a60ff. 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/BXIV82421808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a3df69a965c305416c99ed1b6150e844b33655bb8822cb80fbf91fbad612fcb. 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/BXIV82478415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9e5cd72a960d79f3387c46b0fcd53b5eed0ed78bb84e2d2aa2593107ce48f67. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/BXIV82347541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d9ac9aff286652925ec0b16a603023d0c1be768988f3b9c6844185c5ee4bfc6. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/BXIV82341130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacf32427f78f35d2e2dbef1620397b87b64af96cfd094c67d7632b1d76d4986e. 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/BXIV82332138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ed22c09670e7a3ccfde32489af57b86752c4c38336c70e9eb81a7e05de5f227. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/BXIV82343068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa711776f99fe045bc6e2ff2b5521f1f9f517b4196f214b7d0757825b6f696d69. 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/BXIV82345931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1bc5dba1bf86edcc9486e318c544a8158c56c8a787483e95b7336c81fda68f5. 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/BXIV82382926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f6c4275153ddb704b09649b40f3ff9b397c5cdfcef1c1c8a76fc312bcb53ecc. 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/QZTRX2556526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc3a1c41d96a8ac59855f640c1f00564b04e7bae78d2946e5fe7cd4272044d20. 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/BC6M22516608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8401f97f7daabaa83d84c9fffb590a61d5572d27042e1a6be6f306eafe86336a. 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/AEA3A2535262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x135265ffc6507e0a2a695d71aea818c48a388579d6e7e3a226515a096640f594. 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/BC6M22507947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x106df26374e5630dde053e3b94374e0f1bf825fb15b1b0c3edbc2c6515e876b9. 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/QZTV32377676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeaeccb056775a22b0730a8e2165544f6fffa5cff8aecfa0cbe1e26ab8fd92bf. 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/QZTV32377681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x330599ce5e9823dbf5c32fce70c5f7358d501695faf9644bff0045094165edb9. 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/QZTV32377691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27288d61618ac28b0b4e58c3791af337e1bc6db9a6a982cf111db7ab57d40d92. 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/QZTV32377703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e8166ab6aedde0796b999d6c6a36907e1c7ac0c14c8e5c215a7c24a7983e433. 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/BC6M22509473.