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 0x593d4b47f3d10b3411b3167f7cf596b5a14c1253d069585d27ece558bc63a480. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a589b676-faf2-4305-a2e4-86f27c6939e8.json and https://artists.proofprofile.net/proofs/artist/a589b676-faf2-4305-a2e4-86f27c6939e8.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 0x3f6ed2ac24b22b20704fde8e3c60a2d0fea873fe1485c7da3a213b5148015971. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/FRX202551642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf32c0dfe8152a404191d120c193752145d947640177da5597c08df140e1b749f. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/CH6541666815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd78217fdce2985fddb56a0c9e50c3e3495bc5fc5dad5131e3528c87a17c3813e. 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/CH6541640988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54f4ebc3e0c391adf9365af259333f955169bfe9604f90db556e3a639fa88915. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/CH6541640990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb505d3a3f69e4a8a86b4a0fb3fe9408949fbafea9e01e672e46323dba1f89af. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/CH6541640991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41098b708f3d448d7792a0fbc0b2d9e9ba10274198866839606b50ea21bd5cfe. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/CH6541640992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e315cf63945de50570af1e37543be6902ad55ed41438e4e8d8ccf9de15e55c5. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/CH6541640993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64d046a7e748ba042e83acd8e028c2bcf89aabbd3b86e35dfcae450dea804c97. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/CH6541667329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa45af05a2c63e600a95f6bd3820aa26ebc206efb0b00d4525e35c322c8a5fbe3. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T23:57:41Z), 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/CH6542098455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ff5d54df0a02eee5b7a6f153f56a250891038ac99bb73656def22e23e1dc608. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:11:41Z), 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/CH6542098456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85a2de1067b9e624c9e9834ca347f0ee4cf26164bc54cb6a18ecb010e18e7d38. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/CH6542098457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x977670027e170903e2e4b51920ca92b3bec0fb596e27a078425e654238a60761. 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/CH6542098458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9abc631d45c62f18c85fe8e49277bd40a190a1c2f8edbba4d96a24d8b24b9e01. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/CH6542098459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2443cc4f665dd806ebf4fbe045a60b92000760d0e281c7aa8a897a101c0ffe85. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T09:45:57Z), 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/CH6542098460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47d6e4ba4a5bc8e91a1c3c4aa3db9e2157efabe1be1cbf301ad3fed8a50ea607. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:08:10Z), 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/CH6541641773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xceb1b129acf990d6f163b22c5035926f207d31718fd2563e28c7d724b0fd721a. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/CH6541666825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e57642ce72a97a589068ebdbca44d4ffc6940d10c21c20a553539d19d6e791e. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:59:30Z), 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/CH6541670410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03d27bc4c1e2f0299af1f6ba1777d205ab982005479942ebc3326e9675d54b4c. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T06:50:27Z), 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/CH6541667332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6483be9d5f0feb995ce5c9629f7ab34cf2f521cb9dbb691d0be9a25f066a77e1. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/CH6541660437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b93592a68821bb39f7e01a7ca4b3f78477371d002e234f27336a6144a55ceb0. Chain 2 (Bitcoin): anchored in block 958627 (2026-07-18T23:33:54Z), 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/CH6541660438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81d65c764ad26b421014a2166a27dc6d9cc1e38a991d5b5a81c91c692c01f070. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T06:58:23Z), 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/CH6541660439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x239263625554f540e2264ec848308068ce8fd04c45767708b3e50ceed5c98d8e. 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/CH6541660440.