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 0xdb49da6b967c37a8426ac20ee24becc6a25279b77df1aa2337bd95b680848f06. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c3233710-0b7d-43f0-b36a-d31af0200717.json and https://artists.proofprofile.net/proofs/artist/c3233710-0b7d-43f0-b36a-d31af0200717.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 0x479e9bc13bfa306c0f70651bd9f7626508d0ee21f4ed7eed4e0e5fed91858e9c. 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/AUBEC2340795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bab4e8da95f147e18ee8439461a07904a83e2e187505d4067589455702c7f5f. 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/AUBEC2340796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2bed6ddbc71719130997e9c978eb5f63582e7ad3dae8ae4b157d4499a7455a0. 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/AUBEC2340798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd43055d26e925ab3d7a5861da30fbda89d8e8d98935d9c7a277e97eeeea43fb3. 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/DEU672201359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd154a8c25df00733448ac06aa9c25d7726c319cece93cfa0f6d1427592f7d0a2. 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/DEU672201360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7ad088cab931c2075783d788ff80addbbeaca7c8940c716735412e7722b5e2b. 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/DEU672201361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc375f8e670ec484290168cf72c4b1851f0facea6ead78a693dae2e44262a2b1f. 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/DECY62100132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53dfb4fc53df3124a71a5b0b423a1a17c40a37b4cc99884ea7d8b7265aa9bfb3. 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/DECY62100133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69d717ad088c491cf6f684d9db0852fa552fc96c14250a3d517c4f4cc847b0eb. 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/DECY62100134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04fcfddd38f3b23bb07762027e6e175aa649df8db47a1936bded296b852edb35. 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/DECY62100135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd52baa9c2750cb3aaf7ed44d93c8be41708fff81d6df4e64ebcdc75ca536ac6c. 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/AULI02036690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25187115cb97c779983df96628904a4a8588d369062d4b52e66f90baf6f6949c. 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/DEU671901791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2614838877ea18179e7c8efc211526c1697f793cbf8d99c472c10d118a27be5d. 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/DEU671901794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29af615bb795c3ffbc53c8801488c1bb94d629a08125347310ed8711af8b60af. 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/DEU671703692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadfe6eee84591b828ba46fa6d9482ecb16decc9bf151d65a6264ca7eefb9bbbd. 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/DEU671703693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10a62d12eb9bc7702f1135b19aabf154fd10cf20dd547258877e21222c00404c. 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/DEU671703695.
Sendling Sidewalks - Manuel Darquart Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ca3eda6656ed046dd69aa95a6d00ed959b47c45051fe31e1a301aed6d01254d. 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/DECY62200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2e81f385f2f250e51f7d02fac7f0b3f5a76288bb1b96ad76d394062e67df49a. 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/DECY62200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec3a79ae2b794fdf80292076d9c782f4e6ad2fdb707ab3482b974bd6306f2ce4. 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/DECY62100136.
Everything in Motion - Kornél Kovács Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fd539b18de50cb32268bd44456d415b81037bd29a59d02c27770a8a99a05c5e. 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/DECY62100058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd52baa9c2750cb3aaf7ed44d93c8be41708fff81d6df4e64ebcdc75ca536ac6c. 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/AULI02036690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81133812925927bbd1678f7812a12e93f8a3b2dd8577fda0268d2d7b2d8b6c7a. 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/AULI02036700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1515c17804e6b002e3ee65dce30fc5ee514f38a42302695ae13af430de32ebb4. 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/AULI02036720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x345cda50c11ca1b41465de3f1e6d91a39d0ef263a02d44ffefe56920d1a593ec. 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/AULI02036760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fb312fb6ada11de6415da4edfa304918e7bdac8f316c735c085110ac33c8232. 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/AULI02036770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ceba81dbc67cee79c19e3f6763efab69202b68e2956465aca7f0c0e80ec0e9e. 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/AULI02036790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee8bfabd83771eab3cfb8888b8e16bfddb074094099ad44140975f0268c9fbc2. 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/AULI02036830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97385160cb7834813e55beacc13bb32f3beb2022c5a2c64651341791bb5a11d6. 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/DECY62000029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7543df643d4c524e38fb01fc4f2406e7e7997ac36c1c10586adbb61922c16aa6. 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/DECY62000031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad30aa2f692cef72eab8c2b5cdc92024d6b7644671a79a42723dbcc16bbadc46. 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/DECY62000035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49c477a7dabd72f06c71c60bd32b92f624cae3134fd6bff6194790098ba0344a. 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/DECY62000038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec12011826d2c222739b035c34e42760f1bb9ee26fc5ff66a6f0b80dd81886af. 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/DECY62000039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb52609f44c6fab0da95e9d5d887adb06df5f9991863e9c4258a34aa4e5ad84e. 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/DECY62000041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04f28d243d60adce21f677ad132436aa50eaf03d1adff0ce33f04da6c0572d8b. 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/DECY62000042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe80b518edd57a9f4517ae3baaecb13f8efed1be610761f9b4b0c0bc5d02a71b9. 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/DECY62000043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05facb526ab8a98365befb7c82497d24fb085ef15d447115c236a8c28a0ca354. 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/UKU932483418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf70822964406e12596eabcb5848521de4d3b8621a76214618d125c6a7844f346. 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/UKU932483420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c96c897d4191906a20d1ec491ff0877d1d7ed30b2f45a6c99ec90482f159dc2. 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/UKU932483421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf3624ba827e6b0e132772f7c80e3a99a302d8cd8623030a0825541b79b85daf. 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/DECY62400138.