JDN can refer to: Julian Day Number, the continuous count of days since the beginning of the Julian period Joint Data Network, an interconnected network of JTIDS–based systems Just Dance Now, a vi
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 0x561559940d6fc9ca7402a0018e81535f2df2152f814863a5f35d59a6aca5c739. Chain 2 (Bitcoin): anchored in block 953817 (2026-06-15T18:10:31Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/faf22c71-23b2-420b-a941-b7527675cd5c.json and https://artists.proofprofile.net/proofs/artist/faf22c71-23b2-420b-a941-b7527675cd5c.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 0x345bc8ad9406a4602e481b1a2e0282315bd7df51781109c01cd3a0703b0ccc69. Chain 2 (Bitcoin): anchored in block 958325 (2026-07-17T00:14:37Z), 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/QZTB62315419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7c69fb4e60bbae73f15b259f5524c16f04d27c8756e80efe819304bf8c5754c. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QM6XS2400203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc114f97f699a638b3fa490a00b3926f7d05b579a09ebb34a3a318a6a2ec586c4. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:43:33Z), 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/QM6XS2410020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x974e55ca67e087cb7142587947ea04786dfb3ae92b5a983a5d0f703dc45a369e. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QM6XS2411647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b38177d2f2792f43588e39d8cb03987fd5fad7f282593b9ba0e7f4430ca140d. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/QM6XS2411648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b96ea35cfd0660dc2bd58853ef37206799a5b2dabe2855357b7b8816e84a3f1. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QM6XS2411652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc147791a9a340a7fcaa422e6dddd5c476c4ea909dafa0aa9f3ff1c4166c896ad. 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/QM6XS2412228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a1bb4d72d7bb03e88e40c3a33fbeb36992c313177c0f3d919c7a7ad5912c9c1. 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/QM6XS2510654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe7b70b9f4cb8a781937bee5e22d02e6a0e564d21804a18a9c3d62dfa46de472. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/QM6XS2510812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59a8fa9e1b615e265f2a93dedecfadd46d9abb68221b33a1caa17f33002796cb. 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/QM6XS2412730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15aac7db0ea49ebe2e4a3dfd47bc36eaf8636ff244fba0578298e93fdeaa879b. 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/QM6XS2412731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0194e8c433b7cde6829cfa6487e0c1c04515cef9d7b93bf8c132ce4388c7901. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T19:37:42Z), 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/QM6XS2412733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a04448875815ee45ae6075e5a0f63138bb7e4ed4ca6e8245f28dfc28d96cfd6. 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/QM6XS2412734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x886b836a3e8164a775cc98cdfffb393d0d06645f50a038d8eee346f99813be38. 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/QM6XS2412735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fa13269acb62ee234b3d81a484c2b4291433a8b5509992b35782a8efb2c95cf. Chain 2 (Bitcoin): anchored in block 960164 (2026-07-29T23:23:05Z), 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/QM6XS2412732.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch