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 0x9e2e1c59183696a938e2548597f5eb4602ae4e6600a924979eda8e13bf047abc. 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/aa30abe9-374a-42cd-99a5-c5f275d48d35.json and https://artists.proofprofile.net/proofs/artist/aa30abe9-374a-42cd-99a5-c5f275d48d35.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 0xe5385fc67c812906458290b08ffee5d1033309007a1350c2589e524b1acb6eb0. 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/QZGLS2385004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30e5c655af5fce3d2b6381d64152100b953d82ee071b1b8251ce154bbf28c31d. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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/ES64E2300430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe71960fa6acca64c10a0c7d029c7d3e58f40fdefcb6aca07cf6f37ef714131c. 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/GBLFP2043829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29f1997cbe55d04747775bb3e4677c09b7f6899da65a3a2fb0d96c535ac7a94f. 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/QMBZ92001355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf71a191c9240cd9528c905063c25b5fa776cf376be375253a1610d55fe864e4. 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/QZK6P2295896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eb28b9d21de50d71c55a0a1ce0bbdffdbf6f0f22359cf6dc12a456fe8c2aed1. 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/QM6P42408353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62157e4bb374dea98d0ee45e8fd3fc408bd2ec78e0b41dca54e9844381599434. 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/USA2P2411746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8291cdb46fdf35c2a642ce3daa0874d261be3664b3d44862d398c334582299cd. 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/QMDA72326996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x670d1d63b8a42f81fccb8d14253fe4f5e0cc2b7211522c708322fd63d59cb68e. 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/ES64E2307818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4140e7edc6f7fc229630c225585a5b6c8f2a530857c5403bb100515b453ace91. 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/USA2P2326312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f7abb63262e038853115453c4db28874840384567ea85335606ed272933fc2f. 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/QZFZ72378375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8a0fcf86d7a9bc13ef76e62dc0e5bbab87edf623bc9949f052da4a52c9c07bb. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/USA2P2256254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd46522b483a2ba4dc1f83e0bc2894bd88eef84fc8707638db18aae009da003f6. 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/QMBZ92266342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x012db23b92e609010a0bcd7b1ab7778640e8efada1787c6fe388575a2375f462. 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/USA2P2223113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09dfcc8376a879f07b41586dfd57e10a80b2cdae2016d280ec5ec8770f42ed68. 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/QM4TX2267089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3360ff1ba55644c0e2d6917fc653bee1948ad1bc029fb5f7f66ddc984c74a71c. 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/QMBZ92176880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2499c73dd46e97f77ad9761ac6942fb33784145f7661cc935bd6c2122369e50. 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/QM6P42105858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1b7162845a3bcc09bef31defb6570253c669a6644eca3b12b9ba36b6468ab63. 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/QM6N22138311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53112ceba63af144c1a5d650659825ad09300daf657eccea9a4b61ad490cafb4. 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/QZHZ32137274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24a1ee2b0b36a671691ec664ed70293418e22d6bc1d975cbbffcabfeeddc581e. 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/QMDA72143210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1a043f29219ec5ef0ddf2187f25a5516800002a4584dd833cfbbb58e4ba33fd. 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/QMDA72144595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3abe1bad04252ffef9dbba529f9bdc150ee1e33109bd72ad11c566f514744d06. 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/QMBZ92052607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x388246c44f4926ff4a5cd22dbe1d8d52855db4b9a926092f45e97c4dc9967a94. 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/ES71G2038273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e9e213dd74fcfd598052907fe8f10fcc61d50b216bd9a9b5ad524df43a2fd35. 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/USA2P2325553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52e76f91313a943bfb9a2d628702da4b79ea251964001200cce8006ab7f8c46a. 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/ES71G2009455.