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 0x657fff1d0a93d24ad85fcf1e47f5c431667b39e653be18180432e00f9711b07c. 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/bd90cc94-14de-4561-9a4a-64515fc5e682.json and https://artists.proofprofile.net/proofs/artist/bd90cc94-14de-4561-9a4a-64515fc5e682.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 0xa64781254a13e9c6c0a983599fb08f4bbbde54a8f191f2ab88302bb68612113d. 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/GX5C52200022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa557d1836ca27ea4ef98a826bdc2fac2e1b9b9545e29cd597c9b61ba03403c07. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/GX5C52200013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x850442e99feb11ee6dfc51795aca43395220597bf2567eb9cec70ab28516ba1a. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USLZJ2317950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x425745bff6d0de01bce138c5cde8c24bd7b78ed0ce8a9a69f57aa77320c46951. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T09:11:53Z), 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/GBRKQ2368733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce7a0b120698f873884158396ad6c8af3332c861101039fac6ce0ccac0d7d05f. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/GBMJG2404214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x676cdcdf8aaa71aab4a9345b8c6dcc684c62eac7495749abd55366a8942f241e. Chain 2 (Bitcoin): anchored in block 958816 (2026-07-20T03:51:05Z), 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/GBMJG2404215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62de06b7a344be2d670369346a219c5366407f32328309143edc9680b55323e3. 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/NL4WT2400062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55869f3765b4c6849f36a5c3ec4229d78d84c9d0027df4dc999c8f4f195f06e2. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/USLZJ2484619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43f39c0da4ad7e1e83a2c587672c91949d10c66e1e309eec4982728b9bb3c45c. 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/USLZJ2484620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x393ca55ae91a09ee445b93cd64d38b5eb223594d8d9aecc16abc6ceacbb60056. 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/USLZJ2484621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb49263226b75e45d8126da66943781c023fb998c9aa8e40eba1b0060fc94688b. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USLZJ2484622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5354a67ac71804185ad5cb3c70a6a615e8da61f73b4798a23edb4f2afa9af04b. Chain 2 (Bitcoin): anchored in block 958510 (2026-07-18T06:38:22Z), 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/QZWDD2448960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe193e0df4586a477524c39c298d42a13fb61bfe9d9da9b4a4ba06aa4147fbf95. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T04:55:29Z), 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/QZWDD2448965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ca12663d799a4222d8a7466fdc5828d4ac8270e38835161bf775591fa97a06e. Chain 2 (Bitcoin): anchored in block 958992 (2026-07-21T10:12:17Z), 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/QZWV32498928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30e80d15675f1a9ce2c0d78b4316709bcf10c373d57b5dc51aa145f8baa29256. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QT2VB2501592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ebf0859c33d930f04cbf3e2cc754d12e61ff645936eeffd915a85cbd260bb3e. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/NLAM42500057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a9b9920fc1cc9bf11c03a02afe53921aa9a7168259c22e67cc84f65eaa7df96. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/UKW3Z2502088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d3b4dd90f76008e987b06521e8572b4c78d66991fc841b8c6b74662ac589a9f. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/GBWMY2500490.
Beyond The Frosted Hills (feat. Little Symphony)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x779e8320e0a3fe6633354f8893a2a71fbd88df76e7e997ecefd8d29c8bde7550. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GX5C52200055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22a105e675477e020963d5c58ccfd866ef68c1fd02aa6d11781ab60805c07cdd. 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/QZ5FN2342396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xceb50b5d15aa207de3abdb97587a6117293a7aa0d7878f212cc2ea018f255073. 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/QZWDD2213363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22a105e675477e020963d5c58ccfd866ef68c1fd02aa6d11781ab60805c07cdd. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZ5FN2342396.