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 0x159859d92b9329374bd5800b0acbcf382e80aa5ef2210749808a62c46a0a8811. 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/1cb7ca72-ad09-455f-becf-fd7d31d5ce91.json and https://artists.proofprofile.net/proofs/artist/1cb7ca72-ad09-455f-becf-fd7d31d5ce91.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 0x86529d238001dec0e4339b9b07ca6b5e817289422f9cf17972c8499896336e95. 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/US9CY1300190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x057e8ea59f4a55788552463b41c29bc2465444e8489ed38ca064d1da35a32774. 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/FRX452120228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bbad1667c9f4bfc26739b3c33eef99ef2f1d0e6f1aa09067ae5bcddc9b25b0e. 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/FR96X2124004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf87f107b85d3d4bddbc7fb179d4e54f8fb473fad2d62a4a0c5b9123056305f99. 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/FRX452120227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x057e8ea59f4a55788552463b41c29bc2465444e8489ed38ca064d1da35a32774. 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/FRX452120228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfb7859bec5df40a6e05d8aa48a9e8677d0537ca5a983ea251f773321be9bde8. 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/FRX452120229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5a3866222f738798f3dbedba9b5f699da8f71e9b64c8fcec449118ebe4b0455. 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/FRX452120230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5869e04a54457069fb149db09adee5b87af7f0552ed93fb55ee0e7eecd352689. 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/FRX452120231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bbad1667c9f4bfc26739b3c33eef99ef2f1d0e6f1aa09067ae5bcddc9b25b0e. Chain 2 (Bitcoin): anchored in block 956482 (2026-07-03T10:33:57Z), 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/FR96X2124004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1ab82a8f8158863a6c55da9235e5018c85e60d9165739025196f903a133228f. 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/DGA092350495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x126260bb89f27feeb7f74d22d1bec9ce635e4c4592b7464e9eed2f175ebb062c. 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/QM4TW2465160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1ab82a8f8158863a6c55da9235e5018c85e60d9165739025196f903a133228f. 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/DGA092350495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x126260bb89f27feeb7f74d22d1bec9ce635e4c4592b7464e9eed2f175ebb062c. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QM4TW2465160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4632a96183c3b3be0c8b549e809937387e765e521010e41db93a3514158a0e49. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QMDA72409778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x555645b9122aa50b230ad640e9843df1f0caf3babfd7a356f5eb7e99ca83094c. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/QMDA62483784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b675044b4609538e40823796a9f3a88a83bacf31608f46eb8f5a79c592463ae. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:58:55Z), 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/QMDA62483788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e99f9aa7c6208d446775a03c444b8b156ec3e72057a51dbd808b2db555f568c. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T06:34:03Z), 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/QMFMF2452162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fdf9a1f8e6d00ded2498b6e53894ef5d32a81720097e84b1ba0e78fcd24c65d. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QM6MZ2511927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfac9017ac6871b9fce877820bbf2321510a20ee11a88e5ff9513dca61009015a. 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/QM7282533494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7de80a57ccae89359b0149b0740da9103a005c45a7f5d5d8dc09b0aef4c4425. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QM7282533495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccc553eb7dc5f3a118d888f73af791c9b40a1227bb91ac0cd51ff701fc896117. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/QM6P42532199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf74895fb9342cbdf8d479eb08bbf068e9ea48ebfa9bf0dc07a065b8a1a956998. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/QM7282533497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4082b3899b8afebf877a9ca3845d601e8b48d012c01a67f0d90a38c8b4aea16a. 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/QM7282533502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa48d1dbc397b7c02ebd94091f0096891bd6ead6803bc97b610136c53bb5a901. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T05:02:03Z), 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/QMFME2554049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5ce7a4830021fadbf8152880c5430809035cbd627bed0203283f4db369fc307. 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/QZDA72096666.