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 0x55d549e4e25641547d3ee6d6aebfa9699ca65f6d8abb37df59da8da58bc7108e. 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/63d01076-ae4b-46a6-9d31-afc06d1c97b2.json and https://artists.proofprofile.net/proofs/artist/63d01076-ae4b-46a6-9d31-afc06d1c97b2.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 0x25c830d7f975c70148d634f5fc315c36cc4e15db43f5e00ba9fd48de6f4ee293. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZ4JJ1783873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc13605d01cbeb53c65549034cf40ccaa71b5afdb54c76c9301ff3d6253a2dfb5. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QZ4JJ1783874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x183534474bcd0035072ef2093b007d578de3ec506dbf63d9642a760b36160289. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T18:01:47Z), 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/QZ4JJ1783872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bc4a4f0f28699b48460743d957967554bdcf582b7fedbc97e53285c8bb38e81. Chain 2 (Bitcoin): anchored in block 958376 (2026-07-17T06:41:00Z), 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/QZ4JJ1762290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0efc8f841f36fa23a606ac8a7d547164b55ab56b2195db6f92bf9763ff3722f4. Chain 2 (Bitcoin): anchored in block 958585 (2026-07-18T17:05:16Z), 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/QZ4JJ1762291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc16e7849ab518a7a0eb336e0a464a5c5f500d291b1e186abee013334e0f27516. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:45:51Z), 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/QZ4JJ1762292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a2baea5770d43c1677168f340c62aad178b9cbce5196cbccf957ab32d258880. 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/QZ4JJ1762293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x104bd43dd6a666428c1384131eff3b5d093218ffefd87f0836eafd26e0cfdddc. 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/QM4DW1786783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9256dd84708bc42b92b87b47815ea7585c994555151cce2d94cad3a8face3786. 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/QM4DW1786787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4decc0cbe0a16cc2ddeb034946156243e8ba034c9ecb3e3ab6a23b773ef53650. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QM4DW1786776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb38250a49aa3123f2350852c193a7f49bef3449c5f1058bdd6a4c30e7f8a4c83. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QM4DW1786777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc62e6f69868654854ed83ad2a279f6e755f47c748303c59dbb32e89eec90fdd5. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QM4DW1786778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a39e2106f9426da36ffbc070559bbe66ff367039b5cb2f6c70c476ef9d37f29. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QM4DW1786779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7bbdf114696bcb00df9e669d2612110fc2e54afa588f4296e4cc481975eeda0. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QM4DW1786780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x107ccbdec8dc771a2ba994aca405b4e9864e95810826bf8a4b9462aea4a01b34. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QM4DW1786781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfffc1a8ddc57f37b4a0f47565a6e154e27c6398e6aa97a18d4c0dc97d652e6c2. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QM4DW1786782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x104bd43dd6a666428c1384131eff3b5d093218ffefd87f0836eafd26e0cfdddc. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QM4DW1786783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43682f9efc30dff3edfe7c2f97210e9d4afa60e3fdd80de13159ea2b73a82901. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZHN32424358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcddc3d833d3e84b417d13bbfe0b172d1f04e49d6f261a82e736839ac33b55ea6. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZHN32424359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf9ac3fac533e5b9bbd3cea9faa080ed836cacb2a5be0ef6be5043507e8b1017. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QM4DW1786784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa08c7786e4a1c95452e238e0819eeb4440da342a65a69bc6ed06adf9f1fd8a48. Chain 2 (Bitcoin): anchored in block 956861 (2026-07-06T01:57:57Z), 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/QM4DW1786785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa673631e106e73ea82c8a961ecfc92f2e96d068cf677d83301cf2c1b984958ac. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QM4DW1786786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9256dd84708bc42b92b87b47815ea7585c994555151cce2d94cad3a8face3786. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QM4DW1786787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaefeea0ad64a12be3133c8567659df8a3d4ed405212ebb3a9448052e8b185680. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QM4DW1786788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x274c9cab5d068165459be551aa57f216223cdd5c281676950b0cf3f6521ad2f7. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZHN32424360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf210637b44909ecabc367144a5cf56622981a8a942c3f40594a0fa8ba1a59349. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QM4DW1786790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c6efacef1ecb6b91a4e3590a6306a7ce31ed1deece17f2eb838f2672433a66d. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/QZDA71867623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4169c93929b4c39c2ad404408f5e0c7be15784db5c22ce40e5852952bdec592e. 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/QZDA71867624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x879bb7ffe7e0dff3739333f6b87d35684fa8b00efe3b9a4bbba9649077d5393b. Chain 2 (Bitcoin): anchored in block 958523 (2026-07-18T08:54:12Z), 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/QZDA71867625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x090a98b0534f23b68e8a4f2f63bd9f76741288e220be82a5a9836fd46bd10e9e. 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/QZHN41989683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe0a6936601577795ff0ff5771db43a6727bff659d329aca31346617bb3b01bd. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:04:03Z), 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/QZHN41989686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2248754a78e4948211ffa4affba8faf9c869a60ad217c6c1733f45ae50083460. 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/QZTB72291133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf11d1695428a6dacda91530561132494c075c9937bd924ac2a41c19ea7dc736b. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZTB72291134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09f406e5de2b3a6af08316e1a906999152ed3d4f19ff0fd73b3b44c296d65e14. 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/QZTB72291137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x860aea520bf2a2a4a12d2d5811d11b2b1897dd4977bee6706eb3365ffee5233a. 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/QZTB72291138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2219c384df40ca0ea4d7351178b265e21632ce82b79867ce70992f576944e707. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:49:05Z), 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/QZTB72291139.