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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd49541d826f17eccec669e1d9ec2308b11b53e43c3078bf24ab8fa5c7f389f23. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fbc81f84-5802-4b0f-9343-3480abb69125.json and https://artists.proofprofile.net/proofs/artist/fbc81f84-5802-4b0f-9343-3480abb69125.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ae4827822388bf74d2deb50da1519e9e7db44875c6354176a8f7ce6da55186b. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T08:56:51Z), 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/TCABB1129915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbf89cc37d0bc94e31065cf2aaaebca48eeac4b922ededfa0fd38091db1490ee. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/TCABB1129916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4af93d2d74ba9fb19ec90d1ad81b9fb3f718ffe1a55a4e6e1b8751c735ac2557. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/TCABB1129917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x160713e63684749e9045909861ec3345d1de186c63e1c7530ede2e71ec1d572f. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T08:56:51Z), 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/TCABB1129919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x308a319c53f9be9e45d128f62d7b99ac8330f5fcb07713b45bc7bea1740a2c14. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/TCABB1129921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dee04af0eb1e9a5c20ce0c2d80ece2a3f867bc90ec1d9ea0175336dcbf5427c. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/TCABB1129922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b467176c9d04144f1e16d94cd7bb139b0312088f43573176a8be7ff5c195a6f. 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/TCABB1129923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65665d95c1232beddf863f304524ef99545b0f76d0fecaf51c7539b4e521c977. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/TCABB1129924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6477ae62568be09f9246369673e20f51ab90506b5ed72f26765e49ca1f06baf1. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/TCABB1129927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd80b12bd5a3440135143ddd54c9aba1ed972bb9e3e8a4fd6a1b22920e23d374. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/TCABB1129928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1603639039bef615a66c263ff58a4beb21a545848e8c88d3e1754f4efce2de9c. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/TCABM1320192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1b22a84550f41704bb1383f448bc0151f823ab350c1f6edfe605f8850e97fa1. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/TCABM1320196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42f84977e952f87b823544043a231f145969945fe1612353bf8e661d22c2cd1c. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/TCABM1320200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5de3367185fcd85166313bd787ce01d5b12c3602e9f14fc7f22d448b6dd573d9. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/TCABM1320201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe790add3acecb63ec04ca6e631b568003dadb3fdd55f60f04c60ab324d784ad. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/TCABM1320202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x613974a20c1a5d347f6c4b5955adc11e11d5f92d4e860c88ee9b9b68e52cb677. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/TCACD1527334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a3afbedb66bf198afd9e071f3174fb84a93cd4082cb9bdcee9603c9d0b28e47. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/TCACD1527363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd586f8d172458b2c86ecf5f643679d08a5d554c5afc488bcd75f1f5cc1d7c1b3. 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/TCAFW2189804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb761c733ef4a78bcee3fc7c8141ec0d1bee4a7d0f7229c89a533c34bb8cc9c37. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/TCAFW2189819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e0253ab5eff61ae2f4eb649028fe47ff9a12e3c8776040f062e32d2f6553c97. Chain 2 (Bitcoin): anchored in block 956425 (2026-07-03T01:28:11Z), 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/TCAFW2189958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x773e4ebf2fb2d9131a52d31e247dc8a6dc065581258a4988556c907827e463bb. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/TCAFW2189969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0091f1cdde52608364225c58c0093146c927a893617fe20ea96df33a43154876. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/TCAFW2189983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d8a538d525fa9e779ff293362d625a75dcc9754add735b6a9da1592cedccc91. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/TCAHQ2393276.
B.U.S.T. Acoustic (Instrumental Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6eb208dc47c1db2a342878b1e6a95c07bdb5744c22033f23cc5a636bb832fb67. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/TCAIH2404708.
B.U.S.T. Electric (Instrumental Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84d1ea404adf31bc95be7422fd04af77d52a98839bb60866f2efd8717a579f54. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/TCAII2404711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf376123a4dca8126ed02ffbc20be1284e9880ceb52f533bd883424edd337f32f. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/TCAJE2559435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x803cd464d3fdf0cf1c37f227b73753ab5ce7281d49950f5cd31a2c3406994139. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/TCAJI2547579.