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 0x2bc273fcbf170da2010505d009c1b8ad49f2524dfea7df5e55973554a28e8083. 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/ed3f582a-440d-47cb-a661-9e617fbc268b.json and https://artists.proofprofile.net/proofs/artist/ed3f582a-440d-47cb-a661-9e617fbc268b.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 0x54283fbf27232aa12092de2e95b3faf4c59df675a4645ec290202a00f26c668b. 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/DEPI82312668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcacf38d9aec3996640e2e74d4bc2390ba7c34f02ce2e9dec013479147123699. 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/NLT2H2300946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47964da33679792a3a201458a831eb0b420b9f9f4425b8a9514a8bf10fc0d819. 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/DEPY32300103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc93aeae1d9ed802c26c5bb934d2b870ed66306b2668fab944a2d19454a46241c. 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/DEPI82309486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2992f21124e4952a6827306e1c983a277940d7ad2480c840de64135d5a94fa83. 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/GXF972453472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe876e9fd102cac7eb934f4d07bd52a0c677ed61414772964639ca5fe77c44f09. 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/GX5MY2490758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08c21eba362a740dcfc5141777fe0e8c06684af62f9526df255b05e5f910384f. 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/ATY522400092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x742449a0b455549003c0195f90993d3cabe654daf187e7ae99a4444c6b5a118b. 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/DEPI82446388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39f85349967b8c2208ff6052167668cc0ea853d82c1bae000a8f5e1a51f7f9eb. 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/DEPI82442120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23dc9c42c1df476d66ea74614d1f6cc916841d332488519314f52d84ced9cba9. 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/DEPI82435958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa86e02d9c385ff61a06e545dd38401d72a06eed7e812862ae8a5c0f1c1ba69e9. 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/DEPI82431107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3e528c8266b081b08c52c163ad398b02d16bd04af0fb85096181a5813532a2b. 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/QZMEP2413420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bae70e73305fa0a31eb74dc1786e7e577d2dee79c6e2cb21c6c5cca265070d5. 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/CH7812361404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa609371313e4a417952602b443e7b67dccd38a8ddb0ec4d49ca66e23c7c8ef2. 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/GBWUL2352417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x350770748bd07fc4b3cb8a779d60a8167e4b0d9657b295f5405f088f24016672. 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/CH7812348106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdee804397723f2a4c4b91a81d758038eb25ed532fb0ab7a835af8d67d1661897. 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/DEMA61906360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf721fe2fb1a295a890ef47c12aa2b5e9db67941b13d78af8af9f3d78dfb2c71a. 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/DEPY32200332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96412abbe43bed69ecadd78fd6f4c69e6ae07cf2c4ab9cebc02278be0170fa22. 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/DEPI82514286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a5fab47c0fc6230b7d243efd05133424a414500ae9da19e63bf0083362c3d61. 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/DEN062500298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x645e54580f914a880ec4c30bd8a90547c0d19e8bcc0f6943aac9342bd84c82e1. 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/CH7812534743.