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 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb3051822148044609ec0d7ad22718404f6b5e8d4d8d0ce3a2cf7cec6c311504. Chain 2 (Bitcoin): anchored in block 954728 (2026-06-21T18:08:38Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fb07e2ab-6700-44f6-a88c-8128ec21120d.json and https://artists.proofprofile.net/proofs/artist/fb07e2ab-6700-44f6-a88c-8128ec21120d.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 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34ee9c5f7288e6c58f909a9134e7422d561c322807c147cfb9c18420eacb35d4. Chain 2 (Bitcoin): anchored in block 960503 (2026-08-01T03:41:24Z), 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/USA2Z1810552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb855f8ee60d087fa4961d9a6e53df8db9b5f8083190317ffce8e5adff7823fbb. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/USA2Z1810554.
Bromine - Nathan Micay's Deep Middle Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc87355995b236fb05b411293ad8dbe28a2a6760ab5807adfe62f23b1945c46e0. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/GBEXH2000283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfea4dadb129374e9f9fd98849e5e8348829d1e1aff004a32e35d585e3edb97aa. Chain 2 (Bitcoin): anchored in block 960419 (2026-07-31T15:20:33Z), 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/UKF432000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x178bd33dc06398f324b4f2b99ee20a3d642f8b56567cc1a54b83b7e5bb327516. 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/UKA9G1700047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98f9d40cd19ba620d2d732f13ac2a8b4b8b9102ba13f270cfdb92123abba50b4. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/UKA9G1700051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0ec55db886dda5353f868045002ea80a90aa38015d9e0d4c5da40f1e32f5153. 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/UKA9G1700052.
Flowers from the Ashes: Contemporary Italian Electronic Music
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc72309d80d7096e9d3fd6c9ba47c12cb892c9451bb751d1f0c00ba45de718ab. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/DEPL91529303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf06b48b4be79fae9ca626fd5ad3a599b46ed766af29e56473b2b808f618260ed. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/DEPL91529304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20be14a0c82dc7b711c9556b6ad5694e76fe9517d7dfcfb4a6440ae807084ee4. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/DEPL91529306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x362424c80592535a5b1e430f3eb4193e212ebeba3d2ac7c8a93d2a6e14dd1bb0. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/DEPL91529309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb096aa101d3d1a88613cb2e7ac101a72684d1f3d38b2c848a3f17c177b962301. 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/DEPL91529311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b496108c5a1c46bd2b7f02c5e5cc8db6b3cdb9f8fc99e170b8ff1e74e4cc698. 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/DEPL91529312.
Contents - Pattern Series 4 Remixes Part 2 EP
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1441f3a9ee4c74bcec8c25eca54f3e9008c3be632b0348cb7b7dd3842179ee22. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/NLCK41043449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x707571f787080ee0162af2d111b3ae2c0ff49c7da478a9c82afa67f564a65587. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/NLCK41043450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d244666c6f0286ab202b13943d4c242878cb5e751206bf76b4ae24b4b2e2bff. 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/DEPL91529357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1f603c23c825f4b737247136bc582a6e601c7ed7076fa3357e4134a758184ce. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/DEPL91529360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2608aba20346dd4f5702a2b16cced280444472a98f88adec1bc52dd694b65cb3. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/GBHLW2001720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa81d44ae29f225045e12c3c9f2c4c96d456eb705981f508ea9ec3f87dd3519c0. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/GBHLW2001724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc304a895b9d4f5cced18339aae8430ce3f899576828892e77182360460b10f82. 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/GBHLW1802983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x612809ed8edf5503731b86238e41d2b4642fe085eaedda67a9b469e1686b98a5. 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/COAB11900075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87b6268a3d5dc77a5fddc020ed57aff5d4c43e060e95ff1e08f0045057a99847. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/DEG932000333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08a5b3b825ba77e51ecb7cd833b640325e820b6885fe7c2a8719b93211e82535. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/USJ4X0602403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4757d29825a73b9be5ea0f9d6d09ff93a5154daaa7d228cfb6b57c64538f39b4. 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/NLM791700020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb50f7531876a063bde3c27c5f844e5d2ac97b4bafcf408d51b7b4a54a74823ec. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/GBMA21914482.
V - Five Years of Artefacts - Chapter Four