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 0x4c56dff6dd2a54191eb36556f98f78334d1f712a94a7de0b10b39cdbddd9df14. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0fa13f68-e76a-4206-bf64-c51d852ce5be.json and https://artists.proofprofile.net/proofs/artist/0fa13f68-e76a-4206-bf64-c51d852ce5be.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 0x8138e280263f312017b05833c9e0db41a08c008ae416a183996f6a8ec0c77c8b. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BKXX62400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcda0487f86b24289a24bb3693487db5d7506dce7c87e51f8758d51fcb788317. 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/BKXX62400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x955681ebc95017628c1143c0038b7d3451024aca839b9634ca99676ffd435537. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BRRGE2300652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf055f77d01b5f7aacea220a9ea60862e7429fff3331131fa056cdd2e712ededc. 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/BRRGE2011068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe3bafec111269ba8ad98434eb51e8af6ff473d6e65208e1a50abb4dea1301cf. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BRRGE2010577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62f063a41d737aa072da01665ffa578ab8a74c4f3e6ba7c239cfaaf1a858d9c9. 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/BRRGE2005546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7aa71d87ac48c0f96524024026433a4c8869cb5942614bcd6124927fa92b0ed2. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZGLM2490706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a29ade18c51915a517b84762f640d245fe9551b48a9c9e6d35e2e4b6f2a671c. 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/BRRGE2101109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20c22c0690e4711164f725d1fdbe8e76f755842bd340fb46ea10b0211afbcb57. 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/BRRGE2201061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x606176d8b8ebccf903692899f4eea145590f45422a857cbe59f6c6ea0026cb17. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BR5TG2400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00afef346eb833063d413cc50855db078064967bdce1f12f8e4f6c6398861bb2. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/BCKON2100071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd448343b710d3ae83118d573d704065b026b591abf043562ee9de8f8f6088511. 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/BCAJ22200005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00afef346eb833063d413cc50855db078064967bdce1f12f8e4f6c6398861bb2. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/BCKON2100071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x126c66af5e094b0745756f7726686b58cc875f57a8ff0259214362abbd3eb336. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BRRGE2200627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6323ae0feb39d33c1b9acb47aa100816d9b11d5b27dbd3fc4f4eddf86a4f817. 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/BRRGE2300713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c826ed64429a51531297ba2cb9bb20c985a0c4aabe2d51d530b09114f21bc54. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BRRGE2300715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11dcea20a38c59d06aa242e5076733e61348fad7d62ccd1e2e3c9957a444c8df. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/BX4RG2300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa19d57cb6f91b425a81a6e2cd3fa07923a92d95b3173f191a445a0c027064545. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/BCD592100117.