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 0x260e01fb3e51a51d2e0c73714902a537b38b3f93a98edf66c60455e4776373e6. 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/31137e0d-40af-48ed-a707-c4cccb552446.json and https://artists.proofprofile.net/proofs/artist/31137e0d-40af-48ed-a707-c4cccb552446.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 0x8301c5a25eb6c84227ffd49c40c82e5da65218d4e83fba0798f4bab2f69db280. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/QZES92092993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7453f848381e1594827409ef6accce8d510224beedcbeb519015cbc40ba9a05. 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/QZES92092994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9f0cee5095ec78b5ae6575517f4effc473a42001204026e6a2b729657043756. 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/QZES92092995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b6eb8a61d55c65ae83195ec1b45421e7c1091a18cfbd7fc3e4714dc7c5ed9a7. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZDA72087765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe80ce123a7492fa59f33c0c1fa0dea9d0e9c0d5a45d6f91df5f682381007a6c1. 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/QZES92092996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2074e55fe7331cd1addc240d0402f943c206806166a91c50d438fca99d1cf59. Chain 2 (Bitcoin): anchored in block 960163 (2026-07-29T23:20:38Z), 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/QZDA82001658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb36e79e2ab6ff8b799fc16874f7e77395ddd4c7e471011b503b463b519cb2473. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZES92092997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f578693c7662dedbaee1a64cbaf809660c82977afa2fd89710b85290d7a140d. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZES92092998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a6f448408b866bdba0765b5df631370631154b22affc0264816e19da450aaab. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/QZTBF2389226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf946ed4bc4e28c00a2ca3959e3a5319f0bc6a8e4c6064c373e63e55d3c0f7ab. 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/QZNWU2360574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2542d6dfb9306269b3ec535d587f66a4b157731840627f4839749f53a3272a04. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZMEP2367895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e1f04df3a64ed1ac110bfa367ada84463de3c6b5c54a4d42f0098a1b233ed4e. 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/QZMEM2364944.
IF YOU'RE GOING THRU HELL, HEAVEN IS NEAR <3
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb5658fec11681bd847738b11960040b080ac843cd7c1b45f6103c4436bdc6c3. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/QZTBF2389227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e755d0fe5e14163b97f8d2cf859bd839ae46cc3eba14c098193b2f66972ecc4. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZTBF2389228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcff6cfef9e4250fbfaccd3dcc91c77a215a1b5f910f616dd8672971b2f1fec33. 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/QZTBF2389229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x623d392284ec0e39e885c63c1e8c5b0abc42cdcdc5dcd746e29a2b69f01b4aee. Chain 2 (Bitcoin): anchored in block 960191 (2026-07-30T01:51:26Z), 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/QZTBF2389230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39c7a9e24654ad01350dea18ab1ce475193970c63ce9c5f9edf9f1fb54c3bae4. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZPLS2279942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e0c51d95e5e1b41f06dbecf8863cfff0a7f6a33261e42bd40e9aed27d1abb72. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZPLS2279943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74b846e014192a385dc0f2a8b60a7393ce339c29c5c233eacfa7ac2bcbbeeb29. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZK6G2264588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dc00eb7fac4bb6ac6591282ca83fa82be9ca25495ff88afbe522f5ae155d833. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/QZK6G2264591.