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 0xe95d8aa3103ec201b6a091cd8e8c35de8ac98cb828f21b7a0b62d5f0ceedb779. 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/b8ea53e0-ce7b-4d87-88c7-45e36cf26d3e.json and https://artists.proofprofile.net/proofs/artist/b8ea53e0-ce7b-4d87-88c7-45e36cf26d3e.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 0xc3efe92762542411bb20c4d8a7dec86f75b793ae86ddc6ac2c202d164677fc70. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T15:29:32Z), 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/SE6XW2321440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfc589806410600be292e40c196da22e802e3d2e9b46ec4ff049e5d0809b3121. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T02:34:51Z), 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/SE6TI2313740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40b4df10b92b8d32d3afef1b2001ee28448c0fd2a92e6db9c409582dbd0235c6. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/SE6SA2353912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20d85d68262c35a0d15e90883380febbfa5904ec56e4496cc3a2cd7a75341363. 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/SE6XY2302981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfea3399e738a958657ec349e239624622802ad3f184a3497534cd66064a4ec06. 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/SE6A92367556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8af234b191a992989a412908e2646c917d6b4843f4f514411cea98351768629b. Chain 2 (Bitcoin): anchored in block 958971 (2026-07-21T05:04:56Z), 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/SE5BU2435230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x663621585ddc96f307f0151f478f79799d6bfd4cff69bb12bd920b6092e82587. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/SE5752476460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64aa812925abcad02fbd5d130e8e713e50030f67b9b3b79f9f14d64c84e02830. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/SE6I32468196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c68b059158cbac496ca1729e5347f246e7c8cb80fb961454ef5c9c32e67f2d6. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:35:49Z), 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/SE6I32468198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5773fbfd4f278cefc6a32bcb0d7bb7594f47167ef814a3ad3b22a6e7119efa0f. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/SE6SA2417036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2b291285fa349c756e42d051374ca8466e7dee1e5cfb22f481d0dd0c015a7bf. 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/SE6SA2417037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7d71a3744f084f127e0109496ce69defc93a8c372fc4680ac6f71a833f55e03. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/SE6SA2473646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c24236c20f168c155c0cb70abeba107312f2dbc00a46fe5adbbc12ed47f54f4. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/SE6SA2473648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaddee646e31e5b7567b0785e72097f0b327cba8ceeba691f42dc68593724ee3d. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/SE6XY2516216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5b552c3fc4b31fdd689220e0da1e9eb17abddc846032f86a715d718fd90c88f. 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/SE6XY2516217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70fb7f3ed2c437e11b8f97ada2e5fa183f3188b821c881789ed6395dde90a0fd. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/SE6XY2516218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c357d28fc9f64a0080470a19cf58316272085fdb66d684c20ede041f0b229f4. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/SE6XY2516219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb82cced0bc104c90899e72e2f2903bf124d4c358bef11db7da9bb62c189bf2d. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/SE6XY2516220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21b0eeeb2ec4bbadda5f880e0da0156ef1f00a85232ce2c90388f3fddb07a5a2. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/SE6XY2516221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b35577cdc6b5fc5df7de8eb8ac741d01a59de057cd897122bdf19cd493f622f. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/SE6XY2516222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x513609309081a98a0572608644fd512b7b6e9eb286bfa598b5926b87199e51ea. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/SE6XY2516223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc765873f042d998e49115a85cac0f5dbfcfb7ca0c3400078df7e0d0a6b7fdb7d. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T11:03:21Z), 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/SE6XY2516224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13d8ac57649b8dd2331aa2af1c7f0faf7d9d4b3218413a1a3a9257958a3602b6. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:24:19Z), 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/SE6XY2516225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59bec8c7d6d06eff84e1e8d86544edede0e2f69c0f2a5d8cc1181e43cf52f86c. 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/SE6XY2516226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54b9da2518fbdbd18f0f1f9d4dd7a6ead6ce87474ab0176bc9384f192df2dcf2. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/SE6XY2562946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb038cdfab80b02fdeffafc5a8190281d71fb64cf37986823de6a05462aae4299. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/SE6XX2542980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x820e9b2c73e38e37d34cad38a7aa80dfad7d8adf6e5df3eae39c67713f239217. 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/SE6XW2509032.