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 0xc6501d7b9d74c35d5d516b0b1d949c022300ca25d2ebe7a101b2adb3ee9b4fc4. Chain 2 (Bitcoin): anchored in block 953817 (2026-06-15T18:10:31Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fe0bc136-911d-4883-8e62-d3b672be74b1.json and https://artists.proofprofile.net/proofs/artist/fe0bc136-911d-4883-8e62-d3b672be74b1.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 0xa190d9359de3d4cf2a677b3ad42824e2a18699f60f8f13ec891651ae19232cea. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/MXF018800911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc41eba208ff654aa66c88b896d499c1431ce3885bff4a39b3337387b8b6cb079. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/MXF018800912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd334c03a7c937fccebade6b038ec918d7479b4dbb9035646911d70fb1c07f316. 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/MXF018800913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ad6e238d8144e73327f7d344e30e7f5427d89c1a0b7a12bbba602721b91ad72. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/MXF018800915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x648fd7c41b4762c58694a58ff824c42a68b6c8426522f315ed646a58af8700e0. Chain 2 (Bitcoin): anchored in block 959134 (2026-07-22T13:34:27Z), 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/MXF018800916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe9615756c8b96325b091c5e275dfe28d0ac0657aaca3f2146f47e612685a47e. 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/MXF018800917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe57cbea82d1253715fab6e92648147b1a1747511710986f8dcbf92814052d3b6. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/MXF018800921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ecbd1905cb604ca59c28452dd0784423ee79b73ab34756e7f7867fee2e15510. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/MXF018800914.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10f60dbfb78ddd946307bdd83095d18825c849ea3cbda06e3de312d94f386888. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/MXF018800918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd879374aac0b94edfd0ea0482342fa25ef4464c6cebf324b00243c19d6505f47. Chain 2 (Bitcoin): anchored in block 960241 (2026-07-30T09:58:01Z), 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/MXF018800919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe60a7e9340df114a4399be559775c171459a5ca2f3b0af7af40bc395577e8a44. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/MXF018800920.
¿Quién Dijo Que los Payasos Son Sólo para Niños?
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x552b0c948bc89e6323ea0d740e998e6bfa17698589c2ba50f84a955ea4c25706. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-22T01:25:02Z), 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/MXF601100664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dbaef1adc20273cc278c106feb5e6de4f3a22e5766af8950c4a6b832eb2fc99. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/MXF601100665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05e46fa807d613120bb45c520e4b4a85d204394aaf70739c30f42f28bc87f5f1. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/MXF601100666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca7b3b6c90930b920e567f59b71a1536e1d5ddf5c673961518226b4543bbca0d. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/MXF601100658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x923594c32ce06aaf919ecc1359fdc729b97c0d16d70bd452b6ee881cccd56c27. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/MXF601100659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e18d8e11ec0d842386de9fe466f32072fa294255034a49cf6550f5719385c1d. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/MXF601100660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2e4a28dd8456e7cc458d73facf48939aeec08070e2be46e4ffb55dc3f8b46ff. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/MXF601100667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33b22624db8c54b46092c2a18d4494b2d004338a3f0382fcf39b9809592a053a. 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/MXF601000174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f1910cb536e336ebe0e52d453931f0f77bb83a7ad54e21b5b893cbe2085455e. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/MXF601000178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92181da22e9116e6ec7c88c8ff08d35fccd932b33d800e244874bae0beb11c76. 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/MXF601000155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe901cd48e73864175656c465291ce0dcea335c16d2d1f0a263e7603e83ea9c45. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/MXF601000157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda94c3011f47f805e3ac77b65b504e5d05994ed8417bce4378dc140df2282ed1. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/MXF601000158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc00a7a6a11d823760b8a0c70e78760ee0f0b34c9eed2f0e57a140b733f8c3f42. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/MXF601000159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78160ff69306e266385f4c9d1fc1c1c128eca5be192f0eaaad54a5eadc665e20. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/MXF601000153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33808111a77ad491e4897fe0d62c1c9dfebdf347394dc06761b59196dd4c7d6a. Chain 2 (Bitcoin): anchored in block 960430 (2026-07-31T16:09:41Z), 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/MXF601000156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb90b02d0a1eb13e0cb4189e608f1fcf6d4a789ecf00870f5a5a262427d04df7. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/MXF601000162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3ca0aa8c0300298e9662b5ac0dcaf7b1e23f126fea65a0e93a47ae887e7b820. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/MXF600700346.