1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xb6a21724343f1122737a933754fa6cd4a1ba0ccaa78da88af598adb5464edab8. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/66c39a46-cc7f-4c0a-ab68-71e1c46a65be.json and https://artists.proofprofile.net/proofs/artist/66c39a46-cc7f-4c0a-ab68-71e1c46a65be.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 → block OTSBitcoinBlock must exist at that height 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 0x5286a519609294251a724ecb99f81efb73c3b867811a266753814a5ce587afbf. Chain 2 (Bitcoin): anchored in block 958678 (2026-07-19T05:59:57Z), 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/FIZGN0000012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6b286d4ccd02bb147bf334eb9d7a267f435dfcac1e4552c0074bdc4ff9e3d93. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/FIBAR0300034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4982052c7e1c87b53e38f4a8456f4c7279349a74cb41d1b35918d4cd8be23447. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/FIBAR0200445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x832c9047d6c9165b671a4390806eb7b071658e139c60551e746eca27d4a83fae. 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/FIZGN0000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5286a519609294251a724ecb99f81efb73c3b867811a266753814a5ce587afbf. 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/FIZGN0000012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5f474a18983f1ae2e382c8e0b6dc5495a1223369712882d4687fd29ed6fef47. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/FIBAR0300033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6b286d4ccd02bb147bf334eb9d7a267f435dfcac1e4552c0074bdc4ff9e3d93. 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/FIBAR0300034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c67e8474e86ab39414dcb5a184e301984b6f73a209b1ff2460938e00c3b542c. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/FIBAR0400018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70aa293447dec25f6c72b1eb7e63c5527abfebe021f6d01012801bfda5fd0c7e. 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/FIZGN0000015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x760e598ea01d42b732627b0acc3885a25d697c09b251f7dac9a06a82a25dba55. Chain 2 (Bitcoin): anchored in block 957633 (2026-07-12T00:19:47Z), 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/FIKHY0600018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73d7c820213ee19c645891b90f398f5f323f6687701e0cb4a0e51d42ea8ef2b4. 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/FIKHY0600021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa96f27d9ac72a50cbb595c0eab7b86b489fad5d5831fb11435afa90a3ed56f35. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/FIKHY0800074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8833719b7403f12c1b24b232ec7a56a71f262c30465be840b766b1c897ddf36. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/FIKHY1300068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5de8f1d83b8ba5d713de26c1cd4f50f35b5f8eb822dd466714cab235b1f3b9b. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T10:52:22Z), 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/FIKHY1300091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17fb77ce17a0a3094f4b60f6333787174d66c29820fa33b47ce49fd223bb604d. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/FIKHY1300095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x681cea324647bed70714cc4407535d8a72ca9a150b633b5a7b96b1975f6f5be5. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/FIWMA1500044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x571cfeeafc4e929a07f361e70cd2d544c6f2e35047e9aa3ffaaaa57cfdbe2bc1. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:35:01Z), 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/FIWMA1700105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb86a854f5f37f148747b003cb9089945ab491ecd059b91201ca1c60cbe2971a7. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/FIWMA1600289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7209897b01dd2f248bdb8275fe80f78a875b9c2ebecdca5cb9246f620a7ae637. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/FIWMA1700202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7760799756d8855fa1228ff4595ddfaa611043d8c9219833f9daae42d2bc7775. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/FIWMA2000203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x505dbe1cba668720bdaaa4296a9d6103519ad0f4c71e584920be9739b1e78abb. 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/FIWMA2000205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b24fe79d586afb2e0cd53c822c9164c438919c373cbf4c5fb98d1fad3af79be. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/FIWMA2000207.