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 0xf9b3242ac6669b2669fb4147c24d8d351d2a6c39ae8e0b8f4234c67cd2335a1c. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f295d693-bd35-4157-bc8b-bc622e8a4deb.json and https://artists.proofprofile.net/proofs/artist/f295d693-bd35-4157-bc8b-bc622e8a4deb.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 0xeac6b955c403d4f902d2e11d6be332a202f9fd991e18e604487befeac10c8447. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T17:24:02Z), 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/ITG270600259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4fb49fef8c343540d293382f0408ecc7958c0b9aa8077e3a0011bd20783284d. 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/ITG270600260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf396068b917644ba4caa948cd63a7d7fa4f381d14f72a5f0d551d05bb47815bc. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/ITG270600262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee73b0ab25af90e2f285875cc7ab582a8fb7b999d7dff0c34fc3554428127806. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-21T09:04:17Z), 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/ITG270900186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31527e86a0d4a36268442c76463474271f93ca1097bbd8746533efac1bbf91d7. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/ITG270900188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e1234a86af9a924cfdc1972dbe01aae408afe27696b97e5ea8dbfffb33ae38c. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/ITG270900195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x138275aa6c6243fac5d7dcd7fa032dfc3e7daf350a4cb0656787764e9ee2809a. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/ITG271200064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x204e4da30b232cf0000639f1537cbdf5cf016cecb53cde1f8f06a9fa7cfe8d9d. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/ITG271200065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x490cc1d740759146212bb18d4d23a7efaa6452d7a2aa65b9bd8380b15bd103ed. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:31:44Z), 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/ITG271200066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74571ae78b1261bd20462e55dd679b7077c9e1d64d92511d9e6c29577f9f02c1. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/ITG271800331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bfbf7a062f77cc4ee93cf9482ba7ac8a94b5dfe733070d3fdc7e2efe3ed6c40. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:35:42Z), 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/ITG272100068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa58bdd7252dc73277f3fc46dba96e86541d3d8d6ead8b5c1b0500b1b7ff5f2f1. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/ITG272100069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f2cc6e343a0f4adab65256a1712d73bd2bb2076a63de09d5c140606a04ed679. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T03:23:19Z), 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/ITG272200690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3ba23b035b7439786580e7f038499ef7ab9eeae470e2faa340278be7cdc8ee8. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/ITG272400881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fa75049c2a51efe67edab52cbf27c229d5928d48709af4b354acf9d713822c3. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T01:01:33Z), 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/ITG272400882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x882a190686effe8cb3e697e7c586e7b00f3cf4812a0cdcf162ebaa28776af4f8. 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/ITG272400883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3efa5033b082918957f5b0e93d7090bd7f8d75d3198e0893abe7d008896cccd4. Chain 2 (Bitcoin): anchored in block 957745 (2026-07-12T19:20:20Z), 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/ITG272400884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6fd43eb7d0531492c00bed0a7c6a7e8eaa9e494a3b6926f8ecf81b5d72e7068. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/ITG272400885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64022902f8e9ac854cbed2ad68523b4b2c6f8fe8cd847d3dc904067771595581. Chain 2 (Bitcoin): anchored in block 958708 (2026-07-19T09:08:25Z), 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/ITG272400886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe5dc5e999dee8730a1c1b278812db7afaf63c7ce986bd5c0eebbfd8ff87b67f. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/ITG272400887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd948d56dd8e2465daac94fb441bc31f41c01693f54cfcebfea3f03033a78b18a. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/ITG272400888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fb6f9d36f59ec20df6381699560d6e7f1113f2d567c5dbd4f18ec62afad456a. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/ITG272400889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc7ff95304efe6eaf9ae5562142a43b32545a6d88ac5a530c1fe382c7a93d8ce. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/ITG272400891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36be04d7cd6b3f85e4f43386347b61951f0542848625634e178479b50f790217. 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/ITG270900196.