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 0x71104d43b41ef3234a667b90ccbc8aa9d156c05d0862554a98b98c3d16b27a6d. 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/e106b004-f5b5-40e4-85c3-2dc54179f77c.json and https://artists.proofprofile.net/proofs/artist/e106b004-f5b5-40e4-85c3-2dc54179f77c.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 0xdd3554280d025c30592c45704d1c7b74015f82c497f0334f14b0f5579a8276d0. 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/CLEA21500391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x615260eb56ba33aede9003ce6d81223a6f2336d79ac898951a9cbb6a5c309584. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/CLEA21500392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ce52850b29f7dcf4d38a90120f927a16c5fd3ffe872f82f7525e262d2b3ba59. 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/CLEA21500395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x572abf863f9414a5be0cc3f963fbea7bafeecfae43e5174e48041bd1bb83a0a4. 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/CLEA21500393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1b40c9619f992e1760b18a0ef9c23c0641f026067cf59585e14dafab0591db5. 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/ES71G1856453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad32c4bcb9cc26342efab181376ddf8da7cf167b60ac7aea662291f852f89599. 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/ES71G1871161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x060544c8c0c206a243094ac9aba1d1596f8eef42e2956089b5e3bb8909310e73. 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/ES71G1871162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1b40c9619f992e1760b18a0ef9c23c0641f026067cf59585e14dafab0591db5. 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/ES71G1856453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae72a54b7e027def3fe455eb47bb9bd3c653fc43c5d8e8b90d6be45be40689f5. 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/ES71G1871164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4a2b407703162b1749203a7bfa4dad0a662c1c9b5877e9f2ddcfc297f8ce7fe. 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/ES71G1871165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16e6b9400189ea49e9e813df413bbbc0f856bd6ff921f702cb97c5a86334b246. 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/ES71G1871166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x813f85a14c65ad8563fb622c712dadcd62074da45e4ec6e12055875acfaedb47. 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/ES71G1871168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62dd7978c159957a5c247bde4a95638e3bc5945590b14352fe4154dd4b5a8ed5. 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/ES71G1871171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b80e005bb58456a1aa8780a56c3647dfa081c9d39addd856a513ac020c5cd59. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T16:42:41Z), 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/ES71G1904996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a934f78d34df907a1532b9e350276df182020f34e4e4d6c9d7369f10ec79c52. 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/ES71G2025315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9626321ba4feb310d32b11d5686c235ab94c34eb44ca034b7ef07a699cacbd9b. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T14:59:25Z), 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/ES71G2110608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b59c5d7926ef13b67adc0063ae35add02187cee2d1f09c89b9aa18bfa800c2d. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:10:54Z), 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/ES71G2119461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30b905691f33abd7b8ca1e604028bca9679bf9ea5925467dfa36b38fe5bc7c62. 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/ES71G2135295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1851adb3066e7dba5249fd66e649746affc7998ddf7be4cf48d3f39f19f7173. 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/ES71G2139056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12a9c718bc7700ccfd7d96dff40a019abde406df87d00819a166f05bd333fbb0. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/ES71G2216293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9187b632ae210876a8df43a4cf9b36ad9ea9fc24d3402bb1c669aeffc7d0b78. 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/ES71G2237193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bd0b3aeb06c30fb388caab790ef1781172656e21bb63be58ab01f4b8d0c31b6. 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/ES71G2237194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12a9c718bc7700ccfd7d96dff40a019abde406df87d00819a166f05bd333fbb0. 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/ES71G2216293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6c9988088f1b3cec5e22e08280e50b7506ac8a360cdf0f8f09153908b5b1c86. 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/ES71G2223939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5651475058728162ef5f8d2519dd05ae1e71b8dd96bea2e4300b3907d0274047. 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/ES71G2237199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc84a0936bf79e506d12aacf0aec8307575af104938a97f4a4930d3872bea8e76. 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/ES71G2302175.