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 0x2b2b4f9d6125331161efc04ba32481854ef563a015c0c70f370cd038da86cc30. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e6923689-87d9-4a1c-a2f1-ab9c04e3645c.json and https://artists.proofprofile.net/proofs/artist/e6923689-87d9-4a1c-a2f1-ab9c04e3645c.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 0xdcdcc921b10a239d9954cd820e4a102621d6b63dcb145d4c78f4b8b0155f5258. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:28:28Z), 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/QZNWQ2582339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x726df817b3ef21c273288cf380a5897bfd29d28d5bf7c46ffe12e0a43874164c. 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/QZNWT2508205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x183e5153752789c0d428d8583170e22156bfb5579a6df170e89ed78b884c02c3. 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/QZTAS2535130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90958f483daaca7861f9561834e8641287c80e9a3854b2204527a89792f23fe9. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:07:04Z), 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/QZTAS2539159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22d98fec94579ccd3c2fcc841f70432d654dfc813ebb87b0ad65725568934134. 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/QZTBA2592343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0be277faf13221b139de46aea878bf5566379d229d54995f8d2eb75fa8480e90. 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/QZTBA2594318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce8186d7029cc18ff654e3cf62ce46ec14be1fdf94c3afdd22d135f02308ccbc. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:12:26Z), 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/QZTBA2594315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b516eca853485960b8921affe0a43490d11f026aacfeead5cc8a359c23f672b. 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/QZTBB2563747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d6b44256f658948912f63361679f3324dbd071b8233f9fd9b770c6e6051245e. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZTBB2564771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54469289eb171f4b482a6b12911a9c62a98d2dd0edab760dc52a7475e4637548. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T14:07:13Z), 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/QZTBB2564768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x955fc8cce21fdbf3b24ec517fb60a82e870c3b66d402ae36927ff9404b9ebb02. 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/QZTBB2564764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20b79781da799709d3c6b136b4df7bd09c163969186de56b947ab7f8a480f6be. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T20:13:58Z), 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/QZTBB2564758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08c25a528858aff5de8035917a07484b428b28ba9359fb15dee84bb9811b5ddf. 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/QZTBB2564748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84f938ab332dd458617e0baea1fb43d9fccc27930055eaac31850c2a02e4e390. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZTBB2564761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x334000f6fb7bede47272efcb445adb43ef094f6f1dc9980cbd3eb6d2277029ad. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T00:52:19Z), 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/QZTBC2563873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f34b4824a0526d0d5cb6d7500b0e604fd1c6a9ffe29d7ce8ffcfc2b0795ae42. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T15:51:01Z), 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/QZTBC2566499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37a2ff12dff97ce7854a24d04b5cbf9718f4829802fefc5a8077f0ed969f24ea. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/QZTBC2566484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d5363d7cd26b3667117c46bb3420cacc857894d7c50fdbae2ade6dc0f952e99. 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/QZTBC2566446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b186556528cd09aa3f8b5c1f47e5e79d0cb5bef734896893ef02ab557bf2ec0. Chain 2 (Bitcoin): anchored in block 958658 (2026-07-19T04:09:09Z), 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/QZTBC2566503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc98c1fbf4f7e9d95607223f8a2d73079c1546edff1086d511a2349e1c68aabed. 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/QZTBC2566495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x680779a532b583e5e0cf94aad1ac82682f52f79e47cf827384d63c362dfd000c. 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/QZTBC2566469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bf7bf3ac84429863047bd480a40f90b2090874087175601b2b544a9cc0374fd. 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/QZWFS2599057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6353001342a0b1732f302d786dacddf3d1d257320bc9167b560325956db9ec14. 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/QZWFS2599051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88c998d1c9a6131b99b5e421ac015446af57c7aee68f7aa4232bee654d7eba20. 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/QZWFS2599060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd8560420736ef29afcabb692fdda946d2a58a0d8dfccca1e6571ad0b7dbbe48. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/QZWFS2599062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb22e09caa0d860ece040e777a1ee8d9c983795e422f48243b3bb30de11eac48. 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/QZWFS2599052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ca03fa4b6657fdd7d2a3c7b0a49dcd489ee016abf06d6231ab2bc7de3497f3d. 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/QZWFS2597658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75e19d088d028a9dd4312a9921f35151a0f46f3927897dba3d14624624eb86e7. 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/QZWFS2599059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6af2c6433b63d0d9bdbcbef78ae92c0fa2a40235e408c0084d3ada9418a0bd6. Chain 2 (Bitcoin): anchored in block 958681 (2026-07-19T06:14:54Z), 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/QZWFS2599053.