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 0x375ec135c6f981051bf06aff47d73c5d95e661c232422b05935fe2c2ebd9f1ec. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d271803e-0144-4d98-9e2a-22c0a97ce9b8.json and https://artists.proofprofile.net/proofs/artist/d271803e-0144-4d98-9e2a-22c0a97ce9b8.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 0x645f696e0ae509728dbbb9b367b9bdbfa228bd711e61919d831ed8897e3e1f27. 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/DEBZ72400165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x718a1299074d4e072d010eb0ef227f1587183e2b3458541347d0b553bc712b4c. 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/DEBZ72300165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eb075bd3009cdb963c2f0e63c417bc0e0f17433a7566affe053cb42316897e9. 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/DEBZ72300174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fc0435ce2b0ffa05e0681ea6a73540477b92147b9558d4b58ee65ff9a9d8f04. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/DEBZ72400131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0a3dfd94385aaa705484963b4202ac5efaeadda37f46948c06b84846f0de313. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/DEBZ72400166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45a5a54ffd2cfca5ad68f58384b2398be22a0a85cbb5f18ed56ac6adb6af8ab2. 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/DEBZ72400168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc430b41a15f1d45b140874f5ad356742a7fbae4b6472e3ee6a016db99d11e0e0. 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/DEBZ72400169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9889751eb5d967a65537fc1dce252ce93e416c6b6636901001031fdbe085be2d. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/DEBZ72400062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7415e79d95453ee55185927702c2a459545d546938201a40d275c1654a90b9f. 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/DEBZ72400026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x971c30d25969c784666b79c5b559aa9958d556272f5c25e6c0460e535786dd62. 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/DEBZ72400170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fc0435ce2b0ffa05e0681ea6a73540477b92147b9558d4b58ee65ff9a9d8f04. 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/DEBZ72400131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7415e79d95453ee55185927702c2a459545d546938201a40d275c1654a90b9f. 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/DEBZ72400026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9889751eb5d967a65537fc1dce252ce93e416c6b6636901001031fdbe085be2d. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DEBZ72400062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7415e79d95453ee55185927702c2a459545d546938201a40d275c1654a90b9f. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/DEBZ72400026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x718a1299074d4e072d010eb0ef227f1587183e2b3458541347d0b553bc712b4c. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DEBZ72300165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x718a1299074d4e072d010eb0ef227f1587183e2b3458541347d0b553bc712b4c. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-21T21:30:32Z), 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/DEBZ72300165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57b1ca919ff465f8c1d3b275ce7c59d9c8fc1cf1a2fccd70d509c346efe519cd. 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/DEBZ72200284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ee3190e0a113c057bc8cd01b3ad45dffdffb7949717ca7d01b1441e03470e4c. 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/QZNWY2183392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef2a210f49264df433cbfd411c287d0a51261226c453e0dceb35409ec5141af4. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZNWR2165695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70447f567b2531904c59a7f8658445ad5ff07505486de7e849dd8f07a7300a5c. 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/QZMEN2175668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda28e13731c2c069a9384f5935cc2b00559d7a4c547b07260ced997693b24da3. 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/QZK6Q2189078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb46e8966d131179d6062fbb0c657c0b5d64c66c5d5a2a1f16ab18fc18bc421f. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZES61958034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x242865278c0541c6820c344dfd979b50084f3f05d6ec23f6754f9e3fa33ccaae. 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/QZES61958036.