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 0x274b65995e18aa2d8bba4d36c083d7eed123e2411979e9b90654f1ed9fb0a538. 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/57d218b0-1487-4407-821a-f5c6df508483.json and https://artists.proofprofile.net/proofs/artist/57d218b0-1487-4407-821a-f5c6df508483.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 0xd8aaf459359ce4f8b777341a4d35ffe2f70f9e0d6c57a11e0ed8acba6814c0c3. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T18:32:57Z), 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/CH0801546604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc747ad9e52f77244a6a219ba83437220d6aee67e81ad091e6700b61a4b5ed3ca. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-20T00:12:08Z), 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/CH0801546605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb558253f201ea6fd63b07f36726bd06951c380e189c6972bb19814cfbd889c70. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T02:11:47Z), 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/CH0801546822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3901a03f7677cf016dc6235195f2995aa1c2da198e2cc288c53b1a3ee1d952a2. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/CH0801546826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde006df31a91ae0427915301d605349b61159a22e54db60049983a537043c6a3. 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/CH0801546703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7878cc632d08ec6bde8b68aadb6c8dc135709d4f65b10f99251dbf4114185cba. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/CH0801546707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bd543eeb03c79e19df0581980cc29a99acb8682f9485e5592b6e74a236594ba. 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/CH0801549001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3873537853786e35eb44a8046f4a747b0fcb75c3393094b884e1d8506e6b2e0f. 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/CH0801549003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf49e79c183c753f3efb4d10dc6b22f7392096adbbe4ef18ace2cc777253a4e80. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/CH0801549004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb901aa857fb25533e9a832e47b75a14e543df233f24cddd9bbe81e033bf3683c. 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/CH0801549005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3533e061e5ecd3c1da9b514eb75f41289289d46f1ef24bdf1162323b976ca890. 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/CH0801549011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd57266ccfc0482f9ff582907ffd4dd043ee1f1c2a10d3572900711eb051da5b1. 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/CH0801549014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4408ff203faff56a68d2fbb77628cbdc9fce765433ed2d51e796e24a638cf6e3. 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/CH0801549015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfcb5ad34b98ab190d55790547df68addda39a09c2ee8e42015ab94e9695eb47. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/CH0801549002.
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 0x6f84adec2b606d5910b06e1c90f9e4e1e20ba0dcf17b6b558a28a3b89b5252f8. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/CH0801549006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32dc4c8433361672baf5cb43f6434f2e698565126cdfeebf755428c9765c4070. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/CH0801549007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bba2297665a7fd1c4267cf11f4d9ec0615d7661ca720a511ce8f252a5faf939. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/CH0801549008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcea5ddb2c34c5dbe1741eb62ae53091283f08465dfa394ad1f8425c30b89264a. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/CH0801549009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce23b80bf9411c8a6b4c3c07ff10c7719ef7d391d19ebda0a7ac788adcabeb99. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/CH0801549010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9f8c1ce0b5b2a8ec2cdc94c62573cc3b099d72a56ec78702d505084a11bf378. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/CH0801549012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd95edb9e1a7362560d04e0c536e3ffa3d73f30b8306bc2bce479ca6723e98190. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/CH0801549013.
Alles zu Staub (Bonus Track) - Sad Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x692b00bc40484cc3ec56caf48ccd2355262c561313b769418171188370621b7c. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/CH0801549016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0256da07eeeb27a81c9accb35a583ce2eeda1a88387f994870b8ee1ff25bec5d. Chain 2 (Bitcoin): anchored in block 958124 (2026-07-15T10:59:38Z), 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/CH0802273401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25971d9ec882a28bdb282590db2a8a03518444317a0186a41136a91016e79294. 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/CH0801441614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9569e76e49e3f6eedde266effc066e54c121d9ac5e5a436839727875a5bf00c. 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/DEA621300243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bd49982b9de8e90ff68e3eba940878356266673fec9c272499cd1f1690876aa. 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/CHUM71800157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc757b97729eebe5678909c63c6d7245a0c469acf698c54413474521abc4648c8. 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/CH7812222098.
Des Rois Des Pions Et Des Fous (Evolution)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1989d1ad460265ce8633e35f8cec58e0f2310fb68f432c357500badcd78154a0. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/CHUM70900170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ed7198db596ba57e299391f58865be38fa4729a5b74fb78b39f1e838f82d29a. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/FR10S1879381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83f2eb79919b9e0b27c45ac98399f567422ed4ed487830de20baa1b0b0311497. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/CH0801442014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9906051e3ef24e78bfe34cfe4b96602357a1dee1e0a4f245de870a1077987fdd. Chain 2 (Bitcoin): anchored in block 960181 (2026-07-30T00:53:20Z), 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/CH0801444305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21505273c04659051c5f913c66232b79623fdfe527b06c00e7e075f6c70b32f6. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/CH7812222100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6661f4cbc733aa3d8bc3933d3b710547bc7d7d5bc9151952d8042acbf968ef5f. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/CH7812222102.