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 0x067d60395f8dc4bdc96d7ef065920810319b12146b573b2428f20863ddea274b. Chain 2 (Bitcoin): anchored in block 953605 (2026-06-14T07:39:50Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/11bc6e58-5e36-4b1c-a734-870a6a4655a8.json and https://artists.proofprofile.net/proofs/artist/11bc6e58-5e36-4b1c-a734-870a6a4655a8.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 0xa7866c71e58b9bd271ee5dcb92dbaeafc6e935209c00555a9a1b45061bf28b71. 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/USCNP2005001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3af5821b5defbae15404f664f7be164401f5cdf5f5635e3af74be9b8fffee1a. 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/USCNP2467903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf21790d33b01ce11ac48afb972ee9cd454fa9acf31ed293fb2d91529a1225f47. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USCNP2467906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddef1c569a08ef305e347b8a3d509ea6716e9d746ce9a40658baeca1e383524d. 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/USCNP2467907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73e7a8840a39f8fabb201a0342d542372057f94ab2472ea081e2d1d140d0a43f. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USCNP2467909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70f86b5a3d6b830b6ec1f9fbcf285e6b55c5a9abf06d69bdf117ba1683c06a3d. 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/USCNP2206004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x138624b8167f6050e280d1da571abd47567b790321a8effaa17c1582d72a69fe. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USCNP2206005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedd106707fa55cc60d956102088360a28496519c59877f48f8b09c0f5d53b09f. 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/USCNP2206008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46e9522448f582b6551206284ef19e6fb0db4c98a020950315e624482938a296. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/USCNP2206009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdffa4c018031eb8041a8f2e28c98cdbe0024ce4577735b5c069fe5af0a671ab. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZHZ52027004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70f86b5a3d6b830b6ec1f9fbcf285e6b55c5a9abf06d69bdf117ba1683c06a3d. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USCNP2206004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70f86b5a3d6b830b6ec1f9fbcf285e6b55c5a9abf06d69bdf117ba1683c06a3d. 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/USCNP2206004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda42519a8b7dd9841a3626c27c2edf12cecf7c335970b2d21d45c4d9a29dc6cc. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBMA21863100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac3a642c3d94a9fa0c6f7eafed8ef1a87d73d5e77687fa803f859272e0879133. 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/GBMA21888522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x043d930b2271b08b72b9adc8198f6a58ed00de54c3c76afac118df20af551ddf. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBLFP1870227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26e67288ba1f3e63da78d3595646c1e9e6b0031db00352332c3116967ce06a18. 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/FRX201795574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef462513dce26c94996b73cea1ef60a449a484fc469532d52c66a4b5104d1cab. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/FR2X41814903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bdb0985604f3e3d647e8814eddf8e104c35eac9ff841580d9d16619fae8a64d. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USCNP2402004.