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 0xe5b08809b96e8edac22721ccd1f1775fc724a6d0ec3fd3a3d654540ccc545933. 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/d24709ce-e7bd-4a0e-a520-885c1fbbaece.json and https://artists.proofprofile.net/proofs/artist/d24709ce-e7bd-4a0e-a520-885c1fbbaece.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 0x9c48b134fc51424a892409a635984e9a75a851159b0b45c04a0043e273476e09. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/TCADA1777885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x915b53540e74d39de60c2d56efc32529f08457691c9a3221bdfa99dcf98d8587. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/TCADA1777891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x333d074c7a1b399c345a8fdcb66e9e89f53248cd670575c4e704ac0809da1643. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/TCADA1777894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8df8b6cae7dc7fd6dfc8667a73609735af37e106bee97db5ff5c6d8cc3ea2a50. 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/TCADA1777905.
#5brothers (feat. da Union & Bogotá Rich)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa54efcec50bf71e3d6c69cb8e0f2b7cfb769997d8896e652ff0d3a936cfe7420. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T05:33:27Z), 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/TCADA1777947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05bf40ee1f92ecc828d5eeeb855f2a4ef5ac5d152b476d78928d3e1968d66320. 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/TCADA1777949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55d039b4d2cbb61e3af7ccf9a6fd44e588d47319338df5f6a8e9b1715ea1c006. 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/TCADA1777954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82fc48d941337eacf48ca73e742a9a697f71f8b2c4b4fdc711691974ef49b541. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/TCADA1777966.
#FakFashioN (feat. Lawd Wawa & Bogotá Rich)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb39f744c1247fa1cb6a39b7418cc95fa5142d02178e36203339a5dbb397f1b81. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T20:55:40Z), 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/TCADA1777973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58ba1d0445841925f701d31b92f41ce623d5ad8cf05f25a169c8c2bae8e8c64a. 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/TCADA1777978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8824ec6bbee318de2dd2cb59815a287552526851c7ef187df294f0961bbb3fe. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T18:35:11Z), 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/TCADA1777987.
#CoLoRaDo (feat. Lawd Wawa & Bogotá Rich)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f17bca7b095f038b422d9e30550d6dbb265c08de67ba50bd81618c46341213e. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:37:40Z), 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/TCADA1777995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7695b70b3033ccec47aadd2ccd213b4a18e7f5456005ab5b59f8426b8563bd80. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/TCADA1778030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf20de7ce14ec53c67cd74ed9e4b6e75cf557e375b361bc9e70c3c4abc6ed4e4. 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/TCAFL2176782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83e84b909979ef3b22859f363888ac1a27cc41005c0bedde235fda4729d44570. Chain 2 (Bitcoin): anchored in block 956748 (2026-07-05T05:55:59Z), 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/QZK6G2261204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69743406126e3fb44c331d61d6cce8fb9e36d33e75b4df57153e5aba05ac9a1e. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/TCAFX2156417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd96f40e7c10dd26fa93e322fdf264480060388ec478179733f7ff39b3bec3bbd. Chain 2 (Bitcoin): anchored in block 958368 (2026-07-17T05:03:25Z), 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/TCAGY2312584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15abe63625e5a8442bbe5efe1acea6a51a3be24c27bc11f686dca742ad13ef68. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/TCAIL2471443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5d30da83b9bf7fa65f6823f0e083f71dd29d7d11f552f85bb9a5dc10a132cb2. 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/TCAIN2440431.