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 0x3e657f41acc1476c77a5c504668cf26554b74c7ee04af57e92836a76cc07aaa2. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/90278f5d-b3b5-4748-b728-4d38da4def74.json and https://artists.proofprofile.net/proofs/artist/90278f5d-b3b5-4748-b728-4d38da4def74.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 0xcbad93fd5c37ae6970bda4786f17e8000c232bbc62797de674499a9cdf04781f. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZZ792401083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc259a4515dfb76a36ca107e621a8c45aaf3b0569f659966426584dc4dbd068ba. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QZZ792403252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a917ae8417e284d850cd54eae68b3f0da36dd3eac1e0ceed9175682d331e55e. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/QZZ7M2488853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x428437a354be09b50ae43b53955533caca40e95b5dd0e5b6525b55a15c0931c3. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:43:39Z), 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/QZZ7M2488854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00129079a47d602678682b7d9ec78386f5eded76d8b04d00dbcdc14f800d37d7. 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/QZZ7M2488855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x366a4b3b0e17536bc1b1b46bbe39e4a427a323038a69b1a785bbe4656288be93. 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/QZZ7M2488856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73172f2492e1e4133473f04ac3cdb9bc46dd2d65c39ef854e6571333d34865c1. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T18:31:44Z), 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/QZZ7M2488857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1aa4f3acae783b29f25c8ad236e2a287e0ed64b083ce3c101143b6967cd1f88e. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZZ7M2488858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f2cba9f3de58c341c33b92800065657e6e5cc0037501dd01cded904f90fd840. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/QZZ7M2488859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x037cba27949cbfaf9172c54e9db8bdb149c3b20aaa8475f3712345068e184342. 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/QZZ7M2488860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ca02815276f5e51d0c6f67b1145aa4177140e13b9b86aa8e09221d58da3bfcc. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZZ7M2488861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bd841fe487bf29dcadd1a7120ec58ea35083484b7a34e5e2fda5ed78bdf3848. 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/QZZ7N2422497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04db948fffe9dc3dec94cb56ee61ba108d345a200ffb19f9c9753be0cbd26c8f. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/QZZ7N2422498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x323ed67b7ae73f4656fda405ff244955ef4c33f7b628bc20bca241f65c1ddfb3. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:45:05Z), 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/QZZ7N2422499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16c57cd78c46592ed1f4ca1509b70e2cdd9a447d0f7abf0c28090213ad55828a. 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/QZZ7N2422500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x383e611d8b2e96e1e06ffbf9013f7d2418ceeb281130bb72ff8ca0f91adf0af0. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QZZ7N2422501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aa9ba9486c476879f21f554bc25df32c15b311e2bd9dedd952a9142a67253a6. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/QZZ7Q2424698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3ffbc86b4777ca98f1c01dcda1c29aad57d0a961d268fd05552ac4b29a74987. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T18:55:04Z), 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/QZZ7Q2424699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7abfc7b351661259e380bf3e055932ebe2d36619e189f4cabbb4bb2a91d3a73c. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/QZZ7Q2424700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb591c0c0cbfb8523da426bf85918ae557b31c145d05a84e81e43f7e01d96f1f7. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QZZ7Q2424701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc5e5390720f214d0881151a90a5cc0a06b433c5293483720b017822d1c9b014. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/QZZ7Q2424702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37dbe2754df168a62bdef3ec10f7e91696dc0bb8e8b2403a1ea1a4f32b8656d0. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZZ7Q2424703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f542919149319285b8b1890d1ef340b4f269cbf2576a0a33019468007c014bf. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T10:04:53Z), 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/QZZ7W2489062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56c9fb8d0a12274d3d5b841398b5d4ae6becdb20b7c2bd45577417621883f6b1. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/QZZ7W2489063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c9d0e21a7d1dea9a18d804267608fcd80ad59cd4adb9aaf6ec8c85f5e0dd419. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T18:50:59Z), 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/QZZ7W2489064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c11ed22604171acbaa4fb164cc34c3b13c915392d3dcd0e2f8431ec65dabff6. 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/QZZ7W2489065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae26af09e62e26bfd45b5cf45db3e72270493c84dac67a82402211c800bd6f88. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZZ7W2489066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45365f64a63e7c9729e38716c48c9234fa05ed111d869adb70dd05191f166db7. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QZZ7W2489067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ae032a6a59ff3c813509a3f8245f059827f30eba597e6f23defa30092ab73e4. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/QZZ7W2489068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x878080c71dc4a53a98622cae7e9d17063509961a9f911c92216b93d8ab22f320. 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/QZZ7W2489069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x198765c039261b4b92502c1de1c89abf80ff6ed48feb939376b254ebe0216933. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/QZZ7W2489070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5407da9a82f12b14701b73431425f41b3d2ef6d9279e360eb5bece8284bcaf97. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:37:31Z), 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/QZZ7W2489071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x447591511a5a0bf6f53005632f194b35d2ed632042c4a754c298d0e5e6a4bcc2. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/QZZ7W2489072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b7012d4425cda1a52fcddd8a318c615fb95c31d509d306c7c52d4b4748dc226. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-16T00:03:42Z), 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/QZZ7W2489073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb36cd0d45ca708ba8b14f9aa6c0f9fe60b7002d05f054e6544029d1acbcaa195. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/QZZ7W2489074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaf1ac890ecccfb599f45b601e1d17f9702a5fe8eefc74e707a3e9b126de104c. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/QZZ7W2489076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c59909450ae2ab7d74595d920a2dc28f05982ea06228e5ac59f2cf8a34e3392. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T11:26:18Z), 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/QZZ7W2489077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed85857526ac9d82d7e9646dd4bf7ca88e5148180168105b3d5554f3cfd6d893. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T23:07:43Z), 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/QZZ7W2489078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8c3a6c659a0a720d609933a30997e9cd022f30f605d561d2a59820be484e37a. 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/QZZ7W2489079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31a77887057962a222227c8b520d3051c86e02160b57dff2fed163ba4db7d968. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:18:05Z), 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/QZZ7W2489080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacf5bda0257aa90698de6a2dda3b196cbe9136063c2c5860fcb423dfd34a2e2f. 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/QZZ7W2489081.