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 0xbedf6944112379b184cf26926c9d17eff5162dca0708aa3fc152e1a895ca5e7b. 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/19696b05-5e08-45bd-89d0-e149ce4a496a.json and https://artists.proofprofile.net/proofs/artist/19696b05-5e08-45bd-89d0-e149ce4a496a.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 0x0f550973d95431e0c899d98b743fc8dedff5ea27468e5af64625ccbad9c3dac6. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/NLPN61500009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x539a9f7d7618791069c1f7aeb1f59fe55ff6ab432ec4067b6cb8a8150b42d310. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/AEA0D1977164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18c7a5366642caa8d94d14a9236a4a5d3a2c2f89ebc47bd93c6aa42d5bae5e6d. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/AEA0D1977166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2138d837524c5d6dceb840d8217a9ad5704ff7bfc87220777bd39db36fa6e865. 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/AEA0D1977168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3be9b826a86182e777951196ea5245e6e79e39395fb64f84434b76de631ebaac. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T10:00:43Z), 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/TCADL1881479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x298c75b429e37a5f78690c56d7d31e109bc7614962784c1dcc891887cd2520a8. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T23:13:31Z), 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/TCADL1881478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31dff2da99d35edd5cf6bd222f256082a92e0a82821e8b65fc58ce76754f5d4a. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T10:09:30Z), 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/TCADL1881477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11653ee920ddc460148be2908af9a7632675d8e36e2e06ad4eeaab567a749d84. 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/QZ4JJ1984389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x948fb9cf8e476cea0caec782fdf359d37c75e3f5dd5c3c4dce7dc6f1b63da18a. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZDA81939845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37d7b4bd96522c4cbcd3c38f703dd149cb8e7c76d7cb2143e0ffef88a54c1679. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/SE6I31997728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd58a766cf1f64ac7d05cdac246014e5b14eedc5ca3bd8de5d97556670a3983de. 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/CA5KR2390296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x869e6076f45d05f7134769ca4ac87b05ec50da3a8e4b2c0d4e104c894d79a00b. 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/CA5KR2390297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e4395f070022247feca33b85aed3e34de997fdfbb13af9e1ccd42e84f4ebef4. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/SE6TI2132829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9418550edd2d143085601a14a545e6644a89b9ef0965b054c84e06827150c3e4. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/CA5KR2390300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35da736a23da03b6ffdd76f45b7b01cf9206f55dd8d9f58fa9083ad44ffe7b64. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/CA5KR2390301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1532f7c2b7151bac3b959bd3779b28530b567a3035eb7e8ddc7d151361138cb. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/CA5KR2390302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb901fc00d78544a3d65dcbf8d47d563bc788734abb46bad387c9abb3248e716. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T18:26:38Z), 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/CA5KR2390293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11653ee920ddc460148be2908af9a7632675d8e36e2e06ad4eeaab567a749d84. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZ4JJ1984389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd35cc4b0578fcbc15908b9b4dd36bc78af14fe6a29d547f0b26ff51d844faa37. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/CA5KR2390294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ba6662aba22789c4036bbe698b8be3356539acd02e81023aa7930806cde4311. 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/CA5KR2390295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd58a766cf1f64ac7d05cdac246014e5b14eedc5ca3bd8de5d97556670a3983de. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/CA5KR2390296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x869e6076f45d05f7134769ca4ac87b05ec50da3a8e4b2c0d4e104c894d79a00b. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:52:22Z), 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/CA5KR2390297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x363fc91c3036d53d87e5f2bc5ba30a881fa7a56f914b5314206b0d69c80f0f13. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/CA5KR2390298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e4395f070022247feca33b85aed3e34de997fdfbb13af9e1ccd42e84f4ebef4. 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/SE6TI2132829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b4bace404a94f8e9d9b71a70cfb5cf40334de059258240ed9058e0b27c46642. 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/QZES51966260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c213c744e512b52539f6d267fddf5479f59eecdae2ba5c93f453965b51523f9. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/CA5KR2390299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x948fb9cf8e476cea0caec782fdf359d37c75e3f5dd5c3c4dce7dc6f1b63da18a. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZDA81939845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35da736a23da03b6ffdd76f45b7b01cf9206f55dd8d9f58fa9083ad44ffe7b64. 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/CA5KR2390301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6763d467828f87e789bc40b579ff6b6002fd283fdded91f22d84034dac40b315. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/CA5KR2429625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ce85869f839dd4a0b68d2cbfe47a901aeae3508b567a875f21b7cf13680e4b6. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T14:02:11Z), 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/CA5KR2429627.