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 0x836dba546151a125c80e9f0ffaca74acd3de8c431fefa6ed520ecff5481e31a8. 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/afbbeec4-3536-40b8-bfac-bfa7ffd18ba7.json and https://artists.proofprofile.net/proofs/artist/afbbeec4-3536-40b8-bfac-bfa7ffd18ba7.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 0x7926bf2ea22433eb61675b5343d9792a6ac59fc1aa6fa02283cb018dc59fddc4. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:40:50Z), 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/QZTB42221592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5c639048b441fad569291347f8feb91b84ec9439d5f1273b2aa1e69ad768110. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:58:22Z), 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/QZTB42221593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf317963d34e7e2317524f2530cc8d7c0dd4aa31110c1bad4c125c7364165eaed. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZTB42221594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad0c4b7359cf109d5b9c881f6a779ba5614b6e56bd630e1e5fc64bced152102f. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/QZTB42221597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1941ba6c91a9391cb782d1110bf332db4eefbe859a495b481e4c1e3a4174f1f9. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZTB42221598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1c0a71620abb69b8eab6cfc52d27fa474853fa63c7cc77ca925a4ad5f624c78. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZTB42221599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7987e388bc9a0c31c674c2117b3b4a1e58b9e10a0b80182c7eb5bfc73137eee. 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/QZTB42221600.
SINGULARITY ! SUPPORT ALBUM ON SOUNDCLOUD :) !
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e27d39371ea6e7c62057a1812af810650cb92055fd354b15d49ed55097d62d3. 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/QZTB42221604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd96a486832f78bb09b76a4345689d8df128cdd7ac9a10aa10ff7c815c1c10670. 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/QZMHM2346358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x728bd2bb3ba77e03175897a106613db9b5330e7710df26593be5ed143c1f18dc. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/QZMHM2366388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74855ffb324c589dcf98f87fd8334b77df8e4b58884ef50318f7004f8d10d76f. Chain 2 (Bitcoin): anchored in block 959069 (2026-07-22T01:11:10Z), 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/QZMHN2370060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2b81d4020afaded2d55739551cb63ebe90c26e18dd065aefdb59a53fe587bce. 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/QZMHM2379740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdccf37ad8702f24f9dd1defc79d4ce47f38f8e1e291868f0addc19255bd5424a. 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/QZMHP2402908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb894bc553d3eb961d5c2f4cfa28f23e23f26c9b649ba40284084b0bfb4211aa. Chain 2 (Bitcoin): anchored in block 958473 (2026-07-18T00:52:36Z), 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/QZVEM2566196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x178b00ab46bce5787977cf2bd256cdea5dfec888f182b55d1064072376023704. 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/QM8DG2499333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73d1050a0d6852780441b159fdaf954207c6006179561c0ff3ac5f68394b0a3d. 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/QZS632480010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6334b2037bf3f187532a364b534b49bf6efdce1759b83dbcfce3e87586153f44. 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/QZS632418856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41ce153513bd7ad293b9714de3a83e4672943122525f30ea39106d33aa1dead5. 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/QZMHP2448574.