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 0xdde4b4478a83c60da9ba9122cb05d3a92d8d79392d3f603ece54b3706b870275. 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/64d5e809-0fc7-4746-8039-d728256c9a9c.json and https://artists.proofprofile.net/proofs/artist/64d5e809-0fc7-4746-8039-d728256c9a9c.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 0xd231811eac84efd232424fdb69f485c359991e67a93a307ecadf8d43b27a3fe7. 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/AUBEC2360982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcd57786c38637b518de2ed026010eec482f25e52d907a27c572d413e06625eb. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:49:06Z), 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/AUBEC2360983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa7c0222d05dba86d5f195d79e92bd59fa8617e871f88c99739427ead599191f. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/AUBEC2360981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x053a387ce2d07b1ae6dcaa01ab43871e1a6e15921d68372d78e0ef6ac5ee8b0f. 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/AUBEC2360980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03b04e032a42386990d3d17e093196961a12c1e08d718607b615438f7ebd9343. 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/AUBEC2360984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5b1915502b726ce6e49d89c4c4a82c7d6bec2e60d2a32539628d4a5ffdf57de. 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/AUBEC2360985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fe3c38336ff924c5137dc3908bfddb2f0305101621ba9ec7876a5afc1684a3c. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/AUBEC2360989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe44391474e1ad220e3e12414477a1a296198880831ed00a691a049083f13c592. 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/AUBEC2360988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55ae2f0971c97e0441050984b32cc94fe7efe135ffee12caaa6f130da40cb114. 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/AUBEC2360987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x781bbcd3e3f551657eaddbc4598fd12ada23e8ee295aad24139e71d6b3f4c813. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/AUBEC2360986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf51e9fee16106bf02df08587d4d91c98f1a25a94927670b650710de0b23657dc. 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/AUBEC2360992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x941edd4b5d7f4b88bc55ee8e216cfcce4c9dd8a3f91b6aff09cc95f290b8e4b4. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/AUBEC2360993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd2bb10a2b8bbd7a398dba066f97c0947770bc78f86b012496f81860ce950384. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T08:56:51Z), 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/AUBEC2360991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5069b667ac4d9fd80cf2a7d1b22d8cb17b4dd3e0cdce5ee756844dda737e3a58. Chain 2 (Bitcoin): anchored in block 958116 (2026-07-15T10:06:58Z), 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/AUBEC2360990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ff4ae34f4fdd9da7fad65f58d7bafb7c338b53b5e3d7b6048c5845c09a88417. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/AUBEC2360994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92042877a0fd1f62bf430fbbd5abceb28df6b09231cec82ef7517136062a476c. 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/AUBEC2361000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63584538faeb68a791fc6f451b1009ef71ff29203190e6bca3a31490cfccfc93. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/AUBEC2360998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13d733f8f9992cdb2fa4828a83bb97bd0d22b6af92db256e2905bf41b9ef4016. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/AUBEC2360999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1b5fced67d2a9573df632bf501e7e80ee3e6422e7b8b2a9720841b8ea6aa60d. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/AUBEC2360995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x124c3a2b817610a4f5905dba64578a9238ef8315e1aead4ff9c89a5e02943655. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/AUBEC2360997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb95356b020a85d570fa0dbf4ffc5f9e9d2520ec54bf7d6538c22b8ceda92f232. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/AUBEC2360996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde5d4af895fc94b1fb9aad70177c4eeee98b51d3a2c448eeec1ec23ffb2122e7. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:14:05Z), 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/AUBEC2361001.