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 0x4114ac072e8a52d9cbcfef14c254e610476f830c2f32cd9ee60a2e0c107f0869. 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/ea7f8f41-c058-4197-9d3f-27cc18cce9a2.json and https://artists.proofprofile.net/proofs/artist/ea7f8f41-c058-4197-9d3f-27cc18cce9a2.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 0xb604a36a7f917553eeb3ec371e0a43dd2f025fa7333fa9a5c9b1877390f9964b. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T15:08:20Z), 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/SE2FY2001402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d64bff1d1298ceae7b7a78fd8df3973d43d120db5cbd9984c0ffef74be0cc2c. 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/SE2FY2001201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ebffbac801bf62b1bbee6ba1b01c0f1e7418f2d31e6ce92cb8f13a9a888a7cb. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/SE2FY2001403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3c436dcaa58d8535afa6c797062c2ae6000547050c58b360df47f1dc101425a. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/SE2FY2001404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71428cc75c475abdb0f0bfa968c2e961025284f6a9987447f8caffa110c7625b. 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/SE2FY2000901.
Arkihuolesi kaikki heitä / Vardagssorgerna, glöm dem alla
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54073d34564d905004170a8a0c3b17b4c6bc39ad258e764bc7c432c991c42654. 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/SE7IE2400201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e16e5af8b9d90ae7c25c96e5a2e4c0b282a43d5f867fcd097031f87e8519f69. 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/SE7IE2400101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0527102a0c53ee32a26dc35e2c119882268abf1142bad18b9919615f7a19c082. 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/SE7IE2400301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb765bd0c35364898231992d7da763df2c44b04d87e206bd9830be70c2e056aef. 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/SE7IE2400302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe257fb931c2fbf1cd9a24605b6e405feefbf16676f0f04d2685b731d5bde95fa. 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/SE7IE2400303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3d155d616ad56b9c823f5759ec96a2526fff924891bd08a4b9a2c3f88ed28a3. 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/SE7IE2400304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x139aced5da40c991f083927f8f1cc39ce0019333fb1d2c7a8d4a4c5da142fd49. 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/SE7IE2400305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f8bcc95ea40f5b4716c3ade97436e1e66fda8f0f7af312380ccb70c9e65e62f. 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/SE7IE2400306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b85c400bcf526f08db716cd036285c7cdcef9056e47c8250686249d7f04c0ac. 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/SE7IE2400307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb739c7def2f0f38ecd4bc72f1dd825bdc52b7769dc1082d8896e192eb5fd9e5c. 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/SE7IE2400308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89b00d0484c09d2255dbd22816b49240fa02a9a35234bf314c76e9281cd4df2e. 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/SE7IE2400309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb354321a83a5c018935f60577538bbeccee1025185e6f4b22ed38de7ba0ec728. 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/SE7IE2400310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb787f60756215220add1637814e51eb2fdfd0199b2306bbee33f702b58662d34. 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/SE7IE2400311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d7d55f45d725caf9fe6bafeb69a6389e2b0705636941236442a7207fe94f335. 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/SE7IE2400401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54073d34564d905004170a8a0c3b17b4c6bc39ad258e764bc7c432c991c42654. 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/SE7IE2400201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e16e5af8b9d90ae7c25c96e5a2e4c0b282a43d5f867fcd097031f87e8519f69. 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/SE7IE2400101.