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 0x3c011ea2e972ba0d2277e8685d38d7f51fba8e3eabd831ba0d33feb275b5de09. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/759187c7-4a27-45e9-b403-a80adf7be30c.json and https://artists.proofprofile.net/proofs/artist/759187c7-4a27-45e9-b403-a80adf7be30c.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 0x011d61eeffd235fca7b6e3f02956edba82d5d1ca492535ef996bc1d37afab39e. 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/QZFZ32303947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd215821a6b2b203fef00bcb3dd3d799859c7bb6ac7da81c704b95d8b66668272. 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/QZFZ32303948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c55e3717664c5a730cc9c3165ae1b9d5bb690d7fcc260dc9811cfb98e62a4c6. 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/QZFZ32303949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9eca1c38d94c66bff16cb3c0c0995ff6c42af475f3adf9e8ba11eff0c5c7318a. 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/QZFZ32303950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02d1b0c02142fbff3ec2094b1df6007ce74d5deb518721e97cd9df7edd45df64. 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/QZFZ32303951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf22e098e9653f32981e7f2d315eadfe1b1b05cb55f681331a34baa77cef81f34. 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/QZFZ32303952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x136c3c6b0ca0653f508ef00c25087383d3866f23d15ad3febc679f35f2b86f71. 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/QZFZ32303953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd97ea46eabf34e6fdcc8d2f7df9d009be136ae3c27439c6465f079f2552a6033. 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/QZFZ32303954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17e62a25020439aec5f04b93029bfe944c56b93b48169257fdb6feebd1b6b299. 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/QZFZ32303955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecccd9a42f1a9b54e3d13bf4eaa1da5ae879e4f50e5edea1c51cf4ed33c9a0dc. 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/QZFZ32303956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f002fc2b912066e466529aed89b7d672d5baf6821dddd72da83637a1279931a. 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/QZFZ32303957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14ec94fa31090985cdb8a90be57264a079c7215ff5c2259f5e7c22ca1c467597. 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/QZFZ32303958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53cfddecd88f22ac07ba9d7e9f1a896c04a9a363787f6d92d199bbf4bb79db13. 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/QZFZ32303959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1158df4466532ae9752809cedfd079bf5c9bf3b3d68b8baf6635a8d5aefca28a. 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/QZFZ32303960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae108dd686c1930cee7545d20eaff6a88b0ed5459dd233c4488254db001456cf. 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/QZFZ32303961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf208f386be9b0b805c2d7a1e99aefefbf300150717c9e93922a6182df8dac7ce. 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/QZFZ32303962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19c109b70800b08c859fb08a20a5a2db544b4c7541c612b073a53db474016f06. 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/QZFZ32303963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x895e61a2b9c7608cbf48e5c561482e511a706a7a21f965d0bb167e51e00af2ce. 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/QZFZ32303964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe36fe17069bfbe68c3f4f9071986b72ba9365054d7376cadb0547f74d3cb73af. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZK6J2325295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cfd2c6724e30e5d9bce159894addb8a915adda7dc254cae9231e02549d8f3f5. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZK6J2325296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79f0732520f68e13f297f315c9ca3d557498616072e24ee633af88d421b39ca2. 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/QZK6J2325297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d8f26d69b7a3a27b4f2d1d9adcc52384c4bcee1c2a0d3126284e05c3a6b1c5b. 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/QZK6J2325300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6e236b3653c38365612817e87b8b1bbd4740e564f2ebe7d1a5d16633da7097d. 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/QZK6J2325301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2acaf82b822f10c0d6eefe140c166459fbb2ebf363a9e9f2dff4f038798e96ee. 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/QZK6J2325302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2d1ba88034dd12d4304694bbd8bca7221dd2306c4ba335229f8020d9c3b40da. 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/QZK6J2325303.