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 0x7dd18a47056fe7f407d05a8dd448a38b80a3df6cddd4d151cf41c30269780941. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9516741c-82a5-4d66-bce5-0bb9230da176.json and https://artists.proofprofile.net/proofs/artist/9516741c-82a5-4d66-bce5-0bb9230da176.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 0xf5023cffd0c3fbe94f5e334ed747056e7573e405af8de080f6dc046adb5e318f. 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/TCAHP2386962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e3f97d9c81f95f43128208eecb9db858c698b0ea2b47c23341de696c15fab55. 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/TCAHH2369876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaed6ddde4e022b8ea2b4518ece59b03c03d62b7e81646d800240062837e0fdea. 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/TCAHD2379359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d6c6e9d8bbd2ea98f72149b8d3a35bb61819350871bc0ba32bbd76994cc4c2d. 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/TCAFS2115137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca14f54bbd819acfa750193267cd7d39ab90b1d71e2771aa0dd10969df58f68b. 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/TCAFS2115173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92b3cf766203ce0eeac81a47ba6549eed1f04dab94d9867dbed830b4888df479. 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/TCAFS2115188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed7511aed0e0f702df7dbdb82c9a10f49f7c2ac0c4c3b2317114a696c5ae9434. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/TCADT1841586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94ada57500c878308b64ef5eaab099d1a9b73850cafba6066e4e5803c0197640. 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/TCAFS2115954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff41b17a3d0ce1b162928ef5e85d1aa5f3ef2f2b1bf1563c2439862704a45079. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T19:23:43Z), 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/TCAFS2115219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x887e5a9806b1d8308a30d96a8588a00c76c7fca0cbfacc642229d38d7e21b843. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T07:00:52Z), 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/TCAFS2115874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5b1907b14f0dd8b0c8959aaff437b99dd371afed787e83112be0a1c7348f38a. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/TCAFP2164278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8605f88843e262c6c32819cc5a43f85d7371b46565ad0c50c0b6b9fd1c22f71a. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/TCADK1894267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63352f466df3c06b344e6d882c5f87994186a68c818e078226b47dc4d4c79c73. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/TCAFS2115901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c816826992cf9c35b3c97345c4a4d50bc3823d9adbadaf315e2949a6e99dcd3. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/TCAEN1935020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1b18713cc4c9f7d09944fe1579d9378ddc30be96d91663769550a12cf2e99a8. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/TCAFY2104298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d0ba23810a1bcb14ef6789b8eabc04280b3bb71d9676df9e438530290598e6c. 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/TCADE1725612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9692b4c6e998997123a3b80738fc7fde5d78654d18a0706c9fb99b1ce827355c. 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/USHM22202004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0459baa9dfd3d5a852119c03cac216f4a21cb39b27449dc2c98a9c94a38b7c8. Chain 2 (Bitcoin): anchored in block 957011 (2026-07-07T08:25:35Z), 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/TCAIY2411949.