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 0x7fb8f3f47125ef95c70f23591c4ef4b16cb3ad2bf7e6a8cc49bdee1281524305. 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/47eac0d3-9454-4c44-9550-47f5c81de89a.json and https://artists.proofprofile.net/proofs/artist/47eac0d3-9454-4c44-9550-47f5c81de89a.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 0x3772afd058a07118f5c9476f5f97b386404ec0891dafbe971f3723fa4763ce48. 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/RUAGT2409472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf379804c67b23c36f13b874b6db83579fba587bfc6e43229e190a95f9e777a12. 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/RUAGT2405426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x146ad7d9c7b0203d210597b953363f2622e2e7bb931fc70d91d8b3e86150e623. 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/RUA1D2496383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc11ccbbcaf27c44ce0ee1ed72db76611993c811baa31f52ac7f8b2463f31ef65. 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/RUA1D2485795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9fd954f0d837da3e27f813cbb622a4a08ed8649111e20ff793852164f5275a0. 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/RUA1D2485267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa706b0773f600f86fb087eedec0da800fc005c90b4e6663cec7f3474d0e033e3. 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/RUA1D2477709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb9caace319b88adf553f17552eb14f1d81b2678acb76e046d984d1ba788685f. 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/RUA1D2477076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2bee105baf73d59dbb1e96176d8db4890ba5b2c0854230f6b9e2966947feb28. 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/RUA1D2470718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0084107e622ec4a3d737e0f579f03d01c23769a77f7da56216732baf4607ca4b. 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/RUA1D2462196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x844c1a200f73ca01fcd9233a0b1a2b2cefe367d45f324f72b0744b9efdfe7fd2. 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/RUA1D2440776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d2cf1b23d0ebcc4955bc8dd6f008f0e58c8b35c838bea679f11622b5aaf3d59. 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/RUA1D2423130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c07320471b9a06084b154481a031ddc79924226cde2dec77f0414eafea6a922. 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/RUA1D2417304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbefcef33a98b2e212f789227c74d09475657d4520cf16d6e60a8b658563250c. 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/RUA1D2417726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7417efbe20bbf8a3245075920eed3f06340eab12767d26f9403650009b615a41. 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/RUA1D2417277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x426e4643d9185f56dac674454347585a5024b92277c25128894f4bda5e03f341. 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/RUA1D2404013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a9aad612759082cc479897b69c162355d4df55c826734d4e7ed908ef328466a. 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/RUA1D2318178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x621c6e440ebfd0a77d62ec4c5ea9f577e63cf409087d5c07a377eae54c3d47b6. 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/RUA1D2360077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a3aa259517ba11d78aeac4bc40f02096038dbb4858b8afee8f75b0c3c078931. 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/RUA1D2360083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb35debe4aaa2505795a7f72317c45d8fadf3c6115b217b420c8591ae73fed40. 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/RUA1D2360093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64af7ab0f7b133151a5aa06d41093fa1756ed1a007b929ffb3a9513ad4101d2f. 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/RUB521219807.