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 0x95bf32551a90ba3d1d400124d396f1a21269e6577289eae1b9ac242f8fdab4de. 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/d7c0e9cd-025e-4d09-8fa0-a4598d6c0917.json and https://artists.proofprofile.net/proofs/artist/d7c0e9cd-025e-4d09-8fa0-a4598d6c0917.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 0x51f08565468d0d2971d0a78eb45fc470cc22dc150800bb7fda9e2ef790755c23. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), 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/QZAPG1751380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8a81ee5f36a6bfbf6d20d1c6d09ec9da1467a6f39e30435d123d6931c0e18c7. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/QZAPG1751382.
Poison Angel Girl (From "Insania Suite") [At Postal Recordings in Indianapolis]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16d5dc9450d6cac55d8f84aadf97e364436eec7246c61d2b0056c0f51a2b613d. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QZDA71911990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d3997fe5aa897ff77e5651bbf4a77271dfcc48f62843476124a6ce36de13ff3. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T16:03:02Z), 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/QZDA71911991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9c1055df8e00f486f6582d4af7a63b55de72c88aa38343bc8553dab25a84918. 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/QZDA71911994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x494be503185c7d2e5d38da43e598226aa1c4785764cf3626d9bad20fd780dc24. 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/QZDA71911998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa66488a8b24f12dc5ef110925633ab7dbb4c43c8729ce4f922d1093929bd355. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZDA71912000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97bb02aacf5e5bd1a2a9abe67087ced8c1593c86be3dd3cce44ae7e0518e66e0. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/QZDA71912001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12ee7948a4fd1f3bcf8a1166154bb9b773e41451fcdcf1244d555dc37c5e7eb0. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QZDA71912002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2e0406fab5a9496931588fe4f35f1f054a9d9139040fbc0f7c9828c3ad00819. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZHN71946514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc222a7970b10df8fcd68c6432a71bc8b0548dc07f1580a9e48e8f219bec99e4. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/QZDA72095048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22ed90db1d333a182ad4c3b0724f00d1f20d573a131f64b758142d723b72b7d2. 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/QZDA52297526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cb93e76438a2ce60e6e164fd5ba4b194929983c3910d28155986932346f41c6. 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/GBWUL2429722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x388cc5d5e256aa6cc9b34ade47e61b4cb04efa977157ae975919726e1fb5c2ed. 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/GBWUL2429747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8add8627610ae0f9df779e3ce19d1db5f2891b640e33d4f5ad0965a1ced382df. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/GBWUL2429755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x602ee29e051fe0c1585a163b8b037df3593401f218add6ee0a67b569e7996fcc. 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/GBWUL2429759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2370d818a6a6e8d6710d161da40f7d66d2db8fce293ddcbff1f0b836574c3188. 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/GBWUL2429767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cb93e76438a2ce60e6e164fd5ba4b194929983c3910d28155986932346f41c6. 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/GBWUL2429722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cb93e76438a2ce60e6e164fd5ba4b194929983c3910d28155986932346f41c6. 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/GBWUL2429722.