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 0xf19180ca028d12398fc9c88db6af252a1325f502f3d77927759792f8f41a57a7. Chain 2 (Bitcoin): anchored in block 954693 (2026-06-21T11:50:32Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e4c8e226-76fd-4646-bd6d-eb49e6c743b6.json and https://artists.proofprofile.net/proofs/artist/e4c8e226-76fd-4646-bd6d-eb49e6c743b6.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 0x829462d48c8e610df8f64b2f834cd1352b75fb25f0bea283d865b2d026af7b2b. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/QZWFV2588872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24a654c2c0f64e8d3646175c5563854c9993c5f1bd60c87b8546e017e19782ad. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QT3FD2529852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d530f68e8e8d5a17fee36044c302677580881460f5be9ed0e2eb8772a30f4b2. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QT3FD2529853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b4b698929373a0c090461e344d2a8c5ea6fb3b048c0e1ffd466381cdb846c60. 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/QT3FD2529854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55b0ccbe6e8ae5ab9995b3b9c29b11c5dc43a12ca2921bcc9e4f10f2a056447e. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QT3FD2529855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba9f5faeb5a726a8d7e48d405b3ffc31fe4164de5cee1d029975638b0eed857b. 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/QT3FD2529856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd374e6be46cb4fdbfce2dbe1837151696c6a200b0912bc5340d0867ee37ee43e. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QT3FD2529857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77189cc4e62f91dbd9dff2b247124d24101a93a2db95d2d374225e362543c33e. Chain 2 (Bitcoin): anchored in block 958653 (2026-07-19T03:54:23Z), 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/QT3FD2529858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2edcca115005c460906b1da30029f9a628a53e4c19911b1be2b118445290df4c. 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/QT3FD2529859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bb2679c8fa35783029779aa54ebcfeadc887229f28ed800a32c2a55431a00d8. 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/QT3FD2529860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0780cdc3733e072d6cde0571f3e5f644e12327c972dac8d3cffa0903f48f4749. 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/QT3FD2529861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7411e9873a9bb88051ac61f1c3951ef73ec7d7d45b545ff0c1ee44545b33562. 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/QT3FD2529862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2333aee3c343cc7a96a0a399e152d2c7d34e8bcddfabdcd61b54055293dec230. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QT3FD2529863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed3c109a4f880ac6d82b2d48fd7d2c3330e7b847a8d93a9b295b3ff17c9c60dd. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/QT3FD2529864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe120966018e0a72c192aa344fbf1f726727be0d5f737da4d53a283ba50f62291. 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/QT3FD2529865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38db95e1c5c1784d465483d7202cf3dba404ee8782013fb7205ecc49fae08735. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QT3FD2529866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x181ede587a2bcbfc4dd5d3ddb68739d6250ecc62a61e4bfc1c3736a69c008d7d. Chain 2 (Bitcoin): anchored in block 958654 (2026-07-19T03:55:30Z), 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/QT3FD2529867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0501b167aa5c0db4f06427ccc5fbabd2a4d13fe2d9d1249d107038a613ddd398. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/QT3FD2529868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x793a37643a05458b1c307cd4b48e00849f35cc982706fd92c8f5cd8ad61bf8e4. 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/QT3FD2529869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x581876b299fd4aa943d4413b80e76ed4ea5cb6ecc0ca105695e79df2a5289b4b. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QT3FD2529870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5efcab184016b4e23b82242d503c1f7b732b2c5a2901f048c454a73b0996e306. Chain 2 (Bitcoin): anchored in block 958656 (2026-07-19T04:04:08Z), 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/QT3FD2529871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x385fae7197f937243c14a7a145851a27bf8b38c94c75f8a4aa5b74c3e8cc3fb6. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QT3FD2529872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e09ffc09c4e7f818de6b9d2d76462a4f4eac6e07e12382c487b9d5de5eb8e46. 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/QT3FD2529873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1e110ed479484e493b1625dbb8101454eb67fb318074c143263739303cb3355. 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/QT3FD2529874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x085dac2b2af6c612f5b5499b6ec8d462dbacbd0ecef31270017c5c82e3e6fa71. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QT3FD2529875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x557196047fbd6d9aac85f7e005a20ed4661ae4534faa685949c3aba0e11e7d0d. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QT3FD2529876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd85207ace4708007051a2256e3cd50e17bcd8709fc7b2f8ad0fa7d5886301632. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QT3FD2529877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6860a55a1575d5c3494bafe7f65b640e99f1b21a1f54d74e396b75c4878896b. 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/QT3FD2529878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a315cd16ba2fe33ea06afd4238f6592840f907610b7958915da8b8bc225b171. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QT3FD2529879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26d21d2a3b86b7938719397df769d372e40495594366820606136feefb48854c. 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/QT3FD2529880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23d4384b83e931ee23eafb705ba5c6722d8400b241b0828aa0c46b6e17e2476b. 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/QT3FD2529881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb1669f6a8a92906c85bf571def99b10be1cde6b97cf3dbb2e95fa2842c96ba1. 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/QT3FD2529882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a0340e427c81830dc9efae2def2d25d60097ec5d903f4ea6f0cc965d1e77259. 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/QT3FD2529883.