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 0x3f6fe9d872c0c915d58e848862ab264bb13fba1631957683a22e10ece22c381c. Chain 2 (Bitcoin): anchored in block 953842 (2026-06-15T22:22:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f02cb179-6fee-4dc5-9983-e6655f8e1162.json and https://artists.proofprofile.net/proofs/artist/f02cb179-6fee-4dc5-9983-e6655f8e1162.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 0xa5cf957ce7493f30ae2b0bf1261a1decce22a65a15f4fde75ea6f3a7d7c91608. Chain 2 (Bitcoin): anchored in block 958422 (2026-07-17T13:35:31Z), 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/GBSMU1547989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd75bb51b6614d2542364a5568123e54572e87a2b2301e844f47f50b3a10a699. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:48:09Z), 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/GBSMU1547990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdba1af95889b54d154fbfff42551c2acb9920eb4361a8329b44872af3a4a1268. Chain 2 (Bitcoin): anchored in block 958083 (2026-07-15T01:50:31Z), 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/GBSMU1547991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27474251c9a86baaf92a789965ad775f522aa11f74a23a6ffc59615354ecd3b6. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:07:43Z), 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/GBSMU1547992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4cff476f2b7d2c172d2c2195e4676e9edc275930fd49c6f358434232aadc277. 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/GBSMU1547993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x345b02e9a4af880ad5aa74f363d2bbae52f8014aaaddc2957e2d5cc64d0229d6. 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/GBSMU1547994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c7b53a7f04e76fdedafbf67fc0fde83cdb5611f2f858ca364923914e17ecf0f. Chain 2 (Bitcoin): anchored in block 957763 (2026-07-12T22:01:25Z), 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/GBSMU1547995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b6b61f9cde6d7c9d9d0d101cbfd1a003b9a3bb1133338702554bf8ded1ba2b4. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/GBSMU1547996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44b89ced1286dbe9c54e2e9299a5528d2a0b88f2c10a2c5fa2429ea11674b7eb. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/GBSMU1547997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7dca34aeb440f2635144a8ea32dbee28d7aeb6527f6b8b39b51d5482c1c3610. 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/GBSMU4087308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33206a4bab5ea6372bd5f825e39ae5e6f804f44bb64fa900087319f54089d42b. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/GBSMU4087309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44479c8c3c4482afccf8591efc01f1357b90cd591a9e8e6477f5ee252b980fc6. 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/GBSMU4087310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43a7648e0a8a324c78dfcf931f15aa3fd8ea4c16c3a33582fee1c9f52cb697ac. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/GBSMU4087311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbead71bd0920ed755e9bfc7a00915c0405baf5fb066fd153fecc6802db4d5bef. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/GBSMU4087312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d59b60043fb9a5200afb3c795a60a802e2d802e0a0582f1be9603c5d01f0774. Chain 2 (Bitcoin): anchored in block 958474 (2026-07-18T00:59:09Z), 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/GBSMU4087314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x400d609d24127e8b7869d902e37058f284007548367f0a60b953c1718f79bec9. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/GBSMU4087315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49cd788b06d626960f3453c27466b3940b273d0493dfd8fe6125c63dd14d9a6d. 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/GBSMU4087316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88e2c51cd66f635c98d36768925da3fd3d3c7db3fce758aa70d25685728f697c. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:50:29Z), 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/GBSMU4087317.