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 0x9c647cb26964e8cac92cd8e10fd9fe0bb83ff59fd19b7e533323fe7e0a7c89f3. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f124adc7-2373-4026-9d45-86fe851e3265.json and https://artists.proofprofile.net/proofs/artist/f124adc7-2373-4026-9d45-86fe851e3265.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 0x3ea285fb32ecee0911a5629bc386d3271d72f0dcb1c59f49ff87f4310dd52c46. 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/BK2242400695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce857ebd28f9edd33aa94f2539f826baeec23e7efabd670566a75d33841f114d. 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/QZNJV2415731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7b6510443272bf8ce991da20938b3a159f2a07cb9b0b9fb6751e7ea9ac595c8. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/BC3PG2401904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e333ce8be0d57079e61ce1888aeebdc60314512537f9936c47183ac434f9483. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/BX7P32300772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83931b2ebe44e9a15bfd3185217b21755569a3568761c09b3665b43c3bd82106. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/BC3PG2401450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x978665198a62bb194852994545c02cc6f03d1f4abb9db4013bfd19a194ab532c. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/BC3PG2401552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb38e096a833b0fe74c03971c2276bbda9a1245716c4b14fb064b3693d376e50. 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/BC3PG2400578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd86df4df573f1d5edae8895b396600cc5f782051f9610a12bab93a512c65a701. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/BC3PG2331528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x227df4b46abee9719181862dd02f2f6d225523b230a63e16d4184e7900f98c17. 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/BC3PG2331541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x195b2dd75a02f236c2a5193bf7204780f2558f4cc8d67b861be0f3fe04ac6d35. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GXBAV2399011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39fe20af04a0a2ec7dfaea68187e6fe73b8f4fc12980c87dd9b215287edebe24. 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/BC3PG2330960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fb8e629ee77999e1462b815aa73b6c158156920b9c0ddf6a50f443ba3033a06. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BC3PG2331262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5ac7989e6b823a35af53ede46374216410486f3c45b02b0a9c6544d2065c596. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/BC3PG2330740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa98e60f278c054fc8b2baae7c8bd1a8fc8cd4dcee8235cb6bdb9cf448c1f7463. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZTVM2329330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce5edd0d13d490780f7aebe7ce303038ff0dfb1fadaeeec7b3a9beec30e2b90d. 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/BX3SG2300238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd163d990ae021b00deccb07370c58d9cd75449c3112778915adec2376233723a. 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/QZTPX2302134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc06b2f6c0edf505ca40c9c9d2ae74022bec97d88d375498723a46094480abe83. 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/QZNJZ2346177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ac0f810249bdff89809757d885f42a2632c83748b8fc8d609f46931695af3fe. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/BC3PG2304949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc22cd27dce7984165f1b1e33fef38db9fc1abfc59b54a5e7d89ba089219563ec. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/BC3PG2304236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41db4c22e70cfe34e79276e6e96bd9fa0062f9e61b9387f07da08889f8afc504. 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/BC3PG2304060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde8f072e586612ce1923d57d95a8e17a9bb348eb33c933072d734dc1e1c657a9. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/BC3PG2304229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88d5a399229cf36c9226d5c0e8dea35a01fe97f7acd4cc3f389417a34fda1559. 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/BC3PG2304215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f639a8a2ee65bc280e7d0b434d4ad00c1dc60447f98b401372ac3c6b4b3bec0. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/BC3PG2303875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a9f6347eb5cddc245b35fcf5bd14e6ea853ebc771bf000ae83097c3da57452f. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/US7VG2308225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2b45464dd6da0f42c162e7213e1387636a9725db84b658463ca05d8ca4914c8. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZNJZ2278035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd703c1b84d79f95f21da01febd60a7fe0375252ee9f9c6e1544bccb6e90449b4. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/BC3PG2402631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0778db04c9bc8cda108ab5975d7be0ea33c48893615a76ec2efb985566d99e26. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZNJZ2460093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9eeea05dfb87159c330b0626daa91b47030e200e03c3d85c744c7bfcfec38b9. 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/QZNJY2449849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41e9bb0830be4909a409a0ec20c6b90706bc2960586e92d6e7d5a72643b96ae2. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/BC3PG2402871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35422acc706cdb3caaf5e701e2da1c0bd50e809d5ac71a094d1fb1643bf87cb8. 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/BX7P32301038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacd4c58b6bde832bfe43a2bb8c62cea19cab9eaf9dc53a942c07dd35f36c3fdc. 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/BX7P32301141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf99ed29ac7a569946016cfc3d77399dcb31a250ec4801593dca093230baf2c5. 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/BC3PG2500842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7617ce76fa5146a675b210e00de559f8070e97718dcaf31b199ee4e2b75a052e. 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/QZGLM2524256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25f735223174aed0ec353811e723226f74412974f0b62dece12d6156ed03fca4. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/BC3PG2403773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0ee1165517b06ca26edb81be8c5c1a3b30d110f07ddae1aecd5ea3e39301211. 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/BC3PG2403779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33787f4fe3bd7286c74d172ef2a3f06a97c9a25fc1f9a8046ad8e2314350911e. 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/BC3PG2402797.