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 0x02f7c07ff6d92d0ff41493f257aca5b3e3285fe2be06e42324860ffa0c3a5f6a. 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/f62e204e-34c0-49d6-a9ce-624f4462bc65.json and https://artists.proofprofile.net/proofs/artist/f62e204e-34c0-49d6-a9ce-624f4462bc65.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Playing the Hits of Garth Brooks, Vol. 2
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 0x28d8d98c525afadc13caa197eea533c64908bc0215cdccbbe9ab9a7f78aff491. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/US7VG1527790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0627d46567e5e073c2041ec5a560f4c6ddbff44537b42f9a7f23b968b3a28d54. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/US7VG1527791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9c47abec2d4da68ce806e78bf2625d47e09f2fe0973de603258ce85cabf4a85. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/US7VG1527796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65a146e444ddccab379758e1fdee268ac21d2652760b7962ba95ebf062a77b98. Chain 2 (Bitcoin): anchored in block 959089 (2026-07-22T04:17:46Z), 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/US7VG1527801.
Playing the Hits of Garth Brooks, Vol. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29f91d820a8e33ef330e7dfeee50f35305afc930dd1ade2193533f8c72f6c4f3. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/US7VG1527805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84fb470311f20d98606a6d58237219911bc925f7d8581b52a552f58436d41c84. Chain 2 (Bitcoin): anchored in block 957744 (2026-07-12T19:15:44Z), 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/US7VG1527806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3588d11e82e6c4b6cda2ef70577f6c4dd93b4a4f9680ad12617494c3f978c20. 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/US7VG1527807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ca4f68768a2e74971cc506c8b57265cae638700cd787583e636112bba1764f9. 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/US7VG1527809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d0031fbc308086e0aa8c9b87a04c528715602f2ec118ddb5f25e59636ddd340. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/US7VG1527810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf160ac8f4b2fb590bdab2dae84f3f5e636aa3f4f790dfc2194d101cb79625d0. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-22T00:15:00Z), 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/US7VG1527811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1c12f89630fc0a458e0230172d982a5cb06247786e58fba6dccab6f95958b45. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/US7VG1527812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c77a5c6d63cdd212385ff1e71f9d9b9ba3e365bbafb51b21fc16d99db3278f8. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:21:12Z), 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/US7VG1527814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa93c95b550b69de2a375afc98a40723e08fcdafa54d11b783e896a8cbff2a1f5. 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/US7VG1527815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61122c68200bef5c9e48f6a3d311ad9f7ae9b33e1ce7680ef12205e35e11e0e8. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/US7VG1527816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70892a88c0e7d652e35d331d1e3d1739eb37398f41bde629c5ca5689e70a9523. 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/US7VG1527817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e1454a850318136dab3fe4f34161e01dc0576865effa91fd3f8c45213e4a005. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/US7VG1527818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5945c823eff23e48846daa047522d97b49f50ee603d2b316cb6b667ee7c2bc78. 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/US7VG1527820.