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 0x0ee51152e2e5462f804a61d89e16ad47a2da23c872d9784736403fa324c88c83. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f7d65df4-630a-4236-9420-6cd59acf3492.json and https://artists.proofprofile.net/proofs/artist/f7d65df4-630a-4236-9420-6cd59acf3492.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 0xcd864674b178da5e1b37978df811ddbbac354ab0c9cc5f990469f4a1ee84c0fc. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/GBSMU7179354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8cbcef9baf7c46a64e13417e34354bd39726199559d6e3a6d80c7bb1e1dfae1. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:01:24Z), 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/GBSMU7911448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16a78ed0e9f72204ef90ce032ec55a5d3de4c1b7dc25fe6890a65ec0935ec7c3. 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/GBSMU9362096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4422a5183cb2a20b7710f8778f2a3de064762aa5905b74bdbd1e6d3f6fd6b9c. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/GBSMU0092345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6af67c40bafabbd8d52564312d6ce87b8f15ec571c14b8c847423e8cbad65f29. Chain 2 (Bitcoin): anchored in block 959026 (2026-07-21T15:38:13Z), 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/GBSMU0092401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97848bffa3c074f91d4b4b8ddff1f5d50d1d38bec7d60d53d04a1d6bc3093263. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/GX5MX2131655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8789fc14472315df7c6707333f93be6541f521a0ab91920cdec6b2a879fba6e. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/GX3HH2288491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd518fed40fc796343a3569f1b0a578a471b757e79b44d559dcafa329b43677a3. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T08:39:55Z), 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/GX3HH2288505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ce47cd3c3bded3f088eb17912a207b6f808f356b78bc1f1fc0e1589111d5ce5. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/GX5MX2279509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x030161c7c5db727aadc7dc7f327d0a01e5d109ce9916a24be91d9017aae958f5. 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/GX5MX2258727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12dcb3bae24a3bbc09713ca8a7c1cec3305e77a2a1f55b54fa9b240be018f9eb. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/GX5MY2256848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1af8bbdb54a28c5aac14b06e0e910381e53aa8e43df508551fc448d29ce18fb9. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T23:01:59Z), 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/GX89G2209212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd90de3f40a8957987777562fd2cafa75995864a9194f7d7d3a4f85561a994eea. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:37:01Z), 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/GX89G2274183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0780451497607854fcfa6feb6ed2a297923dbc721a5eddca64114a0614343677. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/GX8KD2373747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb9f473d34052c0ec1f03a89a0b4f6b63c379eb040dbcd05fe16801b83421b62. 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/GX89G2355768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa887c4040b2758e151bd08dedda4acf1d8ca855ece649a5a5a318ec56b54c59. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T14:57:47Z), 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/GX8LD2353359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bd771c2aee0373e434c186c956443ff99c6db59a73a3e87b4c80ebd4a302e0a. Chain 2 (Bitcoin): anchored in block 958920 (2026-07-20T21:01:34Z), 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/GX3HH2389450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88cb928979629a5b5702781bc6a217947613b48da484fef52b701351ebab89ca. 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/GX3HH2361111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60bb9f8598e065e706b9f1812e2b36244f63731db2bcf57c588cf44bd4592c0d. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/GX4R52347089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x657c5b48e6814860794c5e3081aa03c47f29e6f81650bfd4ce40a10b5f5c0aeb. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/GXBDS2316555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5c391e06d12de054dfe4bc1de063d87960328bb9ee362466f8183590b19e1d5. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:44:35Z), 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/GXBDS2380299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b092ef22b5334a12186166d3318e4849e386f362cbff1571c2d3a0c228567c8. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T07:11:43Z), 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/GXBDS2333822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd9862ed3bcf991c111bb145fc780f0e0b8d1d8a57219cd7eeadf5f402a02f39. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T20:29:00Z), 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/GXBDT2361145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2d20d35180c93874f07de4c7da0ed38c9891f22cb13a009d1e35aaa86054561. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-17T00:57:15Z), 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/GX5MY2345554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11d37db65e4873817ebc13b9afd843e1e4bbada6f640938055de62a38bda1a55. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/GX5MY2371018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3804f44d5c0373f4deed72b32e602496494f3938cdb2c998283cda66a9ea9d3a. 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/GX8KD2491915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58923204999e8225ba684ff83b7e9564a3aacc70d7251a854c6916396b66ab8c. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/TCAIM2499477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f427d10b4feb00ab443c44df22131c57f85a7251070baff10245501120421cb. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/TCAIM2477665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcec5e6cb0cc51461650a878c677dc8cd11701f672f91752ba78ca9e4048f55e7. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/TCAIN2435559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2c5b57e24dfbc1af5aeba0808824ee89fdc044168ac64fd19620f534d90ac2a. Chain 2 (Bitcoin): anchored in block 959002 (2026-07-21T13:49:30Z), 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/GX5MX2496484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83de87ec4c92ea7c6d63f1db1db1ddd31e4448bc9385d3140e51e8d63165f7b5. 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/GXBDS2436296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91030bbe507e843adddf2b6f19120a8c6fc1a4e13ec2cb9d58026d232a2740e8. Chain 2 (Bitcoin): anchored in block 958878 (2026-07-20T15:17:07Z), 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/TCAIS2433254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42042818e91be85bee0de215403e4f453a1837d2128fa7d773854f66af2429e0. Chain 2 (Bitcoin): anchored in block 958785 (2026-07-19T21:40:06Z), 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/GX5MY2449489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x661a7927e13d8a64e23816980cdb3077931edb5a0985b76837a6d80c303e96ad. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-19T22:59:45Z), 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/GXBDT2406808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90a7ac2839b96ec3e637b016eb3f897da8de54c31f34a6562c9cfcf2904dbcf4. Chain 2 (Bitcoin): anchored in block 957573 (2026-07-11T13:43:13Z), 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/GXBDT2459296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b9f90d05ba932500bb6cdffe0f6a655e4b2a5d0f662899a702f553eae4673fe. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:54:10Z), 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/GXF972482838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf01eafef4f28475a8ecc61449fba6bb23f8d3dd0ccf96c987b8fc197bc863e6e. 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/GX89G2545289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca7e05d3bd6cc6374bd62bf795df72cb098d3ffc66b3568663f8c0c0c6dbc69f. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:41:23Z), 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/GXBDT2513362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7344681c2884d8151aefe6c0ca3897709ea164fbc5b9ae1427a0452abc0d39e. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/GXF972585175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8f3e9b76802e256a51eca097ada97c7ea9740172ae0e50486af2eee1f52b8c9. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/GXF972527324.