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 0x0ac75daf948be64b929ff7c987df062b428cc0e875b0c3dd43d7940cb545fb22. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4dcfcb5f-f069-4545-810b-ea8758269607.json and https://artists.proofprofile.net/proofs/artist/4dcfcb5f-f069-4545-810b-ea8758269607.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 0x48a07749a35a768f84e864b8206bf70404aa52d3e0ace0aa475052b07b4cc770. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/TCAIQ2444145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeba47833c71e8e4341ad644d7442c64388ea075a9fe266d542a89674c951cff. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/TCAIQ2444152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd5faf5d3463afcaa4afc03c364ad0e595f74917012030f5aac4e90337d6e7e2. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/TCAIQ2444157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x305cdfb9545356d8c3f7d72ee0e2b713799241d5cf6a9fb7113a75548c67b65f. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/TCAIQ2444161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba8fc5a626cb13afce0acbe002437f4916e25e825b0841a0ac5029337c136f5e. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/TCAIQ2444165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0d3ad80b16eac8e141f8c59242765bc6c068d52906824477b109a451011126a. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/TCAIR2444166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf18d66317f665cfd86f3b74d5f17fb615c0bea55d3a5cdb7b30e93b7e6cf34da. Chain 2 (Bitcoin): anchored in block 958733 (2026-07-19T12:51:21Z), 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/TCAIQ2444168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd73fce677b1323345b0244142d42194a3e849477aef38511f295170007eedc4c. 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/TCAIQ2444172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d6139bc835b77ca1e0dc8e8a7b016b28114670cc641d343fd0759659b5f7c55. 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/TCAIV2427685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x895f97a4f936f1de428cc3bcd04f8209d805427fe5134e9a9c03c33a979f8be4. 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/TCAIU2427721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2feacf38116717434b7e127f6dff08bde02789da127718949e817c58e38a9b5. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/TCAIU2427724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c81321d8d15e33dcab50cbda41b1bbd982970317e330776a569034c276e939d. 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/TCAIU2427730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0b8851c3c8e0c5e7fce1e0bdbea7bf76c6dab65a003337274759b19058c7f9b. 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/TCAIV2427734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd24db77384ea916f89d0b83fc6293a6db05f00a612ad59c44ea74825c18261f7. 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/TCAIU2427737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dac01a691d86ba06286bd71a17248d60e6b0bb3678514f70a4c3199deb372be. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/TCAIU2427748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe34d997b1dd6dd4ad433500941bb5d2701d90553330294292cdbda50dc3744db. 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/TCAIW2408003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4052a2943b1ba7f79e535f99565fa8eec6418399e810419048d0fe46ec8dc65c. 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/TCAIX2408005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81b86056cd505fcf032e37a08f2baa8d3867108034ac292dff86eade420b84a4. 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/TCAIW2408011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5068147c0b218889bd6255ac46a2c5f757d4dccc20d7812d25e506db77a5102. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/TCAIW2408015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf342f9db0c2eb9d87197b7959243ec84f63dd8e7d0de1bf7c53c3fcf9108ec9b. 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/TCAIW2408020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79b5f4c36fd85386fb09a99cb4a8bc5080ea4f0435399b4ac0cec2d7e04dc4a7. 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/TCAIW2408025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd713dcdc39aac3c80beeab2ece592af08930e32ba4d221a5b840e84cad0c59db. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T07:27:27Z), 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/TCAIW2408027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d740b0aec239607c0256970b3dd21c354b3562aef277612584f6552f9b0c9a9. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/TCAJA2409338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43f6b2f29c20a3fe99d91fe6784cf6e2968fc81b8bf7c3aea071c348cd554138. 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/TCAJA2409340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1e97b40a161d3d9f97abe5e5d504bcc363441a85de92d8189b6a17ff9f82dc2. 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/TCAJA2409344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe54ac088326b01ce5071757e3269015431dd76051acb9543523c8493e24f96e9. 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/TCAJA2409359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91d085fedf2448f16aba810dab983f6554389f516b93218dc78e2d1af1a777f2. 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/TCAJA2409418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d1577551aff3b9244d29af61994c4bd7c8d4657dc0cf2efd7e8401e550dbff7. 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/TCAJA2409423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x551e5e96e2bc48fa65ae23e63d3826f9662259916717a262806ebb5302699e8a. 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/TCAJA2409429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa64dec1df421cbac4cb6296cb5e6d677fad5f8ff7000c68ff847846851b0e047. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/TCAJB2409444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b51089c26ddcc3fa5508c185ca948b2dc3f70a82837f74559227917a79e8984. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/TCAJJ2552393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x035330d99187ed4b816c2f91763a4fcb7d6e2f1a12ae6d9ebdb7fba9e03f775c. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:27:22Z), 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/TCAJJ2552400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3159026be47b1b99c591cfba7e70e7ec6fb8bf511e89af24fa0cf2fbd4642012. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/TCAJJ2552405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd64764d27a5efdecf59a70b79e8fa70b386e02a7a06648ea61a750f342af6039. 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/TCAJJ2552410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x613bb2bd55c2a3b6378908ff3e835bbab8fb0c93d00a49b9fd5fb5dc5b446b45. 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/TCAJJ2552415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb17dfc0ff55a1f6108aabd3852da2da6eadec6ac0ba72c31c64c6b8aca58b88a. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/TCAJJ2552423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae45a623210e7511debe089ac8621148119c2f0ff379da3ac714460ca24a78af. 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/TCAJJ2552430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5d2d604501372b5c90193933dbce5b271156a77c557e26df2087f7563fd0c33. 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/TCAJJ2552435.