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 0x0321170349fe8d10c78c96897e643bbf536bd6e03466b7e029f54fc179adc018. 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/86b0f7cd-675b-4f9f-bc34-f422b2345eb3.json and https://artists.proofprofile.net/proofs/artist/86b0f7cd-675b-4f9f-bc34-f422b2345eb3.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 0x17d1e757fb0ed1bdbfc4d6b8c5a95e3218b23810fd6952e9f9db4551840e6168. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/JPJ901911180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0a351895627a9b9cfc8ef5a659edf95af655ae02d4c646338d734141576a38f. 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/JPJ902101680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b9cc67bc6d830ff8cb6afaa401c71c98e4977aba098d6bfaeae1db1400065c5. 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/JPJ902101690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49fc557f9d5b57429b23c5bab3e56f1fbf13ad5d31bc862a8ed6a654fc5d18fe. 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/JPJ902101700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42cc318d6066957e59f405f33fed3b8fce05e54602105ff24531bb45d8ddcb1b. 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/JPJ902101710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95a394381bfa2e9b93526c479255431b2567cb8fb01d8e6f7f2b7ec81c5a5285. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/JPJ902101720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac202a3ee1c3a227e43a365d33a51ecd364bd9ebac907a7626c450bfb65fba1a. 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/JPJ902101730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8227e4d8a0d582dda230b4a2052cb2d076589585e26ae0e39155864a5f9a5263. 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/JPJ902101740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2937ec1c99fd5cf0cdbc3911045e2ef1e7fdc216284f7e9d3b6964925964500b. 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/JPJ902101750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf794d619df0ea7e59efd7e423910636a6785016651644b848bb700046085e29. 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/JPJ902101760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd8b4e8fcfaae77aa3943c47477780cc2740e925b95ecdd1817dc858c0e6029a. 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/JPJ902101770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4861a97bc08d5152eb06923ca235461eb8361a936346919740c3614188c6df60. 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/JPJ902101780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3a0b88db393c8b39ac97edd768a688f9f7fdb41e43962deea59ffebb43c28dc. 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/JPJ902101790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x404cce81abfc2db50ae5f2eb4d9b6ab5ea013a7ae0a365037d8d09c452edc096. 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/JPJ902101800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0333f6eeb92916b4dcf4841b6f9e5ef1bcc49ace9eca232e833d5c08972323cb. 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/JPWP02100766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ee7a16ce4ca8929f806019c7dcd9849dc8128aa1ff5a72da1f8b853fe3fd59f. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/JPZ922109995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc915e2026f1f7b20c9b9179ba98e4fdce48286f23294db646e10a996921cd92d. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/JPZ922203919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b9594bdd47d9180360ef24a86de1e60ab7ef70f8179481ff5c1424d0c75eaf0. 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/JPZ922302043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ceecbfe04eddf8e42af7616d42a4353ce2e2825921d6ceacee86321b0196129. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/JPWP02300590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2b70eb5f8ed69936a9f4d120332c2d94ea3f6d379c98a09973f3eaebb0b736d. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/JPWP02300881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dbad25d744dddc7bdc1ca4ed8ed2305ffc1968f4e2665812794a5deff33e4ac. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T04:59:54Z), 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/JPWP02370796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66c769b95ac4cbadc6d6b0320e30b4ff1ffc9b93bfe953cc78fd7407457e34ac. Chain 2 (Bitcoin): anchored in block 958903 (2026-07-20T18:03:34Z), 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/JPZ922213376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc30a485cdc152bac2da7a187957fab7cf261bc2a98097dd3533931837e764909. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), 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/JPWP02370795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ec7712ef4b0a908451707467f468550e6b436f4a6443e057be77b165c0cc192. 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/JPWP02370797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ee7a16ce4ca8929f806019c7dcd9849dc8128aa1ff5a72da1f8b853fe3fd59f. 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/JPZ922109995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb99407e44b48acd95231e559681b21572c00ccef7e2f2e26fa32c5846bfeecb8. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/JPWP02400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7d41dd7ace2840d6c929e1a46a5b47817ae748e9fb094165da689169955add1. Chain 2 (Bitcoin): anchored in block 957874 (2026-07-13T15:43:57Z), 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/JPWP02400161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d439b71f2e7718c5e7b52bc67f9321409411d192fa4d995f87160abed19f954. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/JPWP02401029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe34676cdadd695ddf8a8f255660c8a42ed46dbe963cb07116541e06d5f240dd5. 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/JPWP02500627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc3fb1dc5f62763f1235cb2d9f5eda5af3aa3f9db104a4cfbe2088bf995cd784. 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/JPP302200658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc3fb1dc5f62763f1235cb2d9f5eda5af3aa3f9db104a4cfbe2088bf995cd784. 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/JPP302200658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd11b264da711833062f3b788b36bf970cf6cebe48a42b92ce0b93b31d6e24f9. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/JPP302100737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83e644b89c5c021477d2e9a9aacb8dfe20d9e4524e8d9d75ff82d60a9e6d677d. 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/JPU902401088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd53d26ed7eb655f6094c272393c51fbf2cbdd66e1d96e29d5d3f37a88a6b813c. 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/JPS801853591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd53d26ed7eb655f6094c272393c51fbf2cbdd66e1d96e29d5d3f37a88a6b813c. 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/JPS801853591.