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 0xcec77d1e2e0cca6ec12f1ac4e58202b915130535494c563165a4b78324f86e27. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/98b81df2-8f61-4728-a136-54c1f800da7d.json and https://artists.proofprofile.net/proofs/artist/98b81df2-8f61-4728-a136-54c1f800da7d.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 0x593116f6ae6009bf2f75f686049b2df90eec899a611adf7a76772f8886592ebd. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:19:12Z), 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/UYM121500401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9169483fb75b7601568914717c5741c46222e1b33a354c64230b14ee47dc2f91. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/UYM121500402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x655b2fea1233c8de1b89fc0d38ea79f6e390a30b89f2d2006cecac2b4aed6fea. 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/UYM121500403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf5e48d71ab3f13d6a6922d1bf4aa77af64de7c03e2e18191162523948431859. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/UYM121500405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91a15d1ca6421ff7d3a97c410c3e17557d7865a7b6159783ebcfec6160cf654d. Chain 2 (Bitcoin): anchored in block 957892 (2026-07-13T18:21:16Z), 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/UYM121500409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3689c2e28f956bf6520ca6980797f387b5a023476794e33a263c2d3df3d6067. 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/UYM121500413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x919fb38ea492b6c9ea0fe8eab80c4b6348072a060f48ef0e8239702081a01acc. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/UYM121500382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd383afbbfd2e2ab1d62ddaa50781da70f5dc66bbfa0c442ceb5ee3c1b7ea4288. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/UYM121500383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7506d72b4b2976a3340b8be299ecdcfc1666db97f1c3a991165dbd3c18cf7ab7. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/UYM121500385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32a64663b058ff7331e89d3906a1741f0a44e24645badd57bcd1d3842ebd0a6c. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/UYM121500386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b05db7555a324f233ac80bad6cda6dcb4e8058d8931b83cfece03e3496de8f4. 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/UYM121500388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe05115d4563eb25dac156e3768040819ae2173a2e0917e655202756943d15c25. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/UYM121600452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x095b6a0d5d989d4e9637d13cb3a43fe717d7910ba46e0a207247227517809d51. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/UYM121600453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b919d9d036e8c7b5b9da6b361d8e6844a953792101990f0b0627e5c88dd3007. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T05:45:38Z), 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/UYM121600455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc73f5410ec4b55a6cf23a7cb2a8f488ec0c9aa8e78ea11c0487c2cf053faeee4. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T12:54:58Z), 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/UYM121600456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe406c05a85bde58ad49be8762af1c68a7108e613d5dc176089417a7fddca93a6. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/UYM121701051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82ded83bbcc80d27a3c3e0810f75cb824a3a3996ca6b494b2bb776abd9688170. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:01:42Z), 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/UYM121701052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f8eb37649f41289012d57db6cb05e6b6b3bf261ba25fb1beb10b994ab084e08. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T04:58:47Z), 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/UYM121701054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0ec0f32a799b60ad531dc5a87fc0056f70bf8c45792200618fa5d0a4f452ef7. 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/UYM121701055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x995c83fcf816cc4151604bab713e5337fcf3a1bb11059644f91fe6903ac64128. 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/UYM121701056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa59a767abff9bf90996134b4f98f4c6707176ca970fee304cad77ca7dc7fdb4f. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/UYM121701058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fa1674724b10bab76cc11d8d4d660dd4cd640fa42efe2d91335a8ed40e28be0. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T09:29:20Z), 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/UYM121701059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f4061d8cb8f5ab0b3a923972a4b4e96902f662fa1ba853bfcf5188d3f43953b. 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/UYM121701061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33b405c6582f95a44bb7dca0387e205023986f745ddfc51bf881394e94244cbf. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/UYM121701062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07fb2d19e3521258d904a899e18ac030a9d13accd2b52b75cb38856dc733a58a. 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/UYL522200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd81351fb3dad5875e1ea1f6cfa3eccc4775dedaaaca1da4982201d10f9c5c82. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/UYL522100013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa264693c9ab61fbcc63a73f73622eb01510e55cfd460ca13063c5bfa6dea0eb9. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T02:02:55Z), 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/UYL522100011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3273e24f0b562ce0d0c61394f4da20703253733dd853f127269e05b6fdea4995. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/UYL522200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9328e20f1bd6b771637b470dd53174d0dd14cc4be66100257c35a225e4c2faf3. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:16:36Z), 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/UYL522500002.