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 0x5cbd567a7ce6f6d1f35e726f8efafcf73df07f317f6c629a10c54c97bec6915c. Chain 2 (Bitcoin): anchored in block 953746 (2026-06-15T05:25:34Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a5b1beb8-e089-42f3-bded-8a3e070f4858.json and https://artists.proofprofile.net/proofs/artist/a5b1beb8-e089-42f3-bded-8a3e070f4858.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 0x99fae0c0cd384287e2e79353a06660709965525f2e0cdc194a803d7ac2bdb5b2. 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/US3DF2490957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x302ce1e1401d09df9956362a98087bc9aff1b3d9e4e9b4158ce1a73b8fcf215f. 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/US3DF2417781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20329679b1d7047450637feae59275c1d0543a930058220e49d1ef31faaeaa28. 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/UKZGC2309861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7854ae274f958c69a426e96a6710d7cae520966325504d54bfaa953b37c77452. 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/QMANG2211919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ffe8398c722e4e9e033d1d47ab1027f4ce6f573781c86a25e20683a2ad137f1. 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/QM3DF2279398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37eb28cfb0d2934df206b882bced2555068419693171944d7dcc5b98051c9e76. 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/USMH92319828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04a24fb83fa1b5e4da9e11fed8a7205748737984989b4fc41e134cfe9b9eeb0d. Chain 2 (Bitcoin): anchored in block 957032 (2026-07-07T11:43:09Z), 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/US3DF2490962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x133269f3af2dbcb73fd55dae405c854a4a18276ddcc1bb7d04601613f533544e. 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/US3DF2490955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x791226d78dc23fd68b3ec5f34e41785a7d2c460ffe3b587f72c4de14848324fe. 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/US3DF2490961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99fae0c0cd384287e2e79353a06660709965525f2e0cdc194a803d7ac2bdb5b2. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/US3DF2490957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55f2da5f299bf0341bc0d6f065b7544053498a9be610f9c8ef93bbe18a4a9a8b. 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/QMANG2242236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcba47f10cce803dd65b40a74d3c0f4e1c4cb18942eabe8efc70301a0f1f9e7d2. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QMANG2242239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7f210961ad8522ad9ed24b291ef3c97218859b80f8bad96c7e47fddfb1b24e1. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/QMANG2242242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc8b5ddb673678ed7783fb4550a10d9e00c3e26f60d538593563d22e784c87c4. Chain 2 (Bitcoin): anchored in block 957055 (2026-07-21T23:11:37Z), 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/QMANG2242249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd3b9cff24cc25101e454bf5f46b56b256eca464b3357eee13028cacf543632c. 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/QMANG2242253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1ac0bb297ca980b35c01cb523cf67f2509f8df6be59dd360fb58e8d3b446f3b. 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/US3DF2458652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf968d2af193c29eb7478162947d2d49630f2de7ce708857d0d47236685a7273b. 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/US3DF2458650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5661b455f380667a42bd2dfd7d0ad37e6a0e3929613a689f96b9ee3f1bdb9e7f. 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/US3DF2458651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x600f225744ca4c6fb55740814a8e26e404bff6b24cb6739ecf29a6822ef7459c. 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/US3DF2458653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1b83811dce398cc558a8a3c85aaf38210e9c6912a8a5d3e1092b6ecd579f641. 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/US3DF2451669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca1fbc7ecfab1211e23736cb68f525c8b940720a16e7c73e643d9e29da53daf9. 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/US3DF2451674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6db39c027cc1af574009e3397995aa51827a6e7d189178bc0cc751ffbfb7936. 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/UKZGC2400054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb60cf950c90ec6891a3adfadbd6c96fa055dd7575e8ddd2e57e57723b8970ce4. 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/UKZGC2400055.
Tape Deck the Halls: Dusty Christmas Lofi