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 0x480c5bd8f318d98e37128eed670b1ea9605de8c053634f1aae329c9de247153e. 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/0c753e43-2cff-4bdd-99ad-0cf53a08348a.json and https://artists.proofprofile.net/proofs/artist/0c753e43-2cff-4bdd-99ad-0cf53a08348a.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 0xb955bc15934fe8cee9d327e21b6776fbea9b36c74ebfbc24d46955549db89a4b. 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/SEBAA1400701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a67a53640d82a90566d7abac4da68a3c27448e3c221c5cf41f7116372bb6805. 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/SEBAA1400702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f5a2f92c2751a2f9dae3558029a3c2e3c8cd9407912f4f501c8913dea4a4e2c. 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/SEBAA1400703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85c78972183e74c6d469514d192f6763e198a0a5a76e950e437a4cb2e145a423. 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/SEBAA1400704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa4711dac106d0e06070e3df24daca4c8dfd6501e38fac2810c29b82d78dc543. 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/SEBAA1400705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a3fa0671e50e13e8ead6ee9e2f4f11bbaa12ce51c224c3bdd48e2405bc7b133. 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/SEBAA1400706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe08453f3cb2080668482889b07f49316c26b35f6573c2aafe0ffa86e3d093adc. 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/SEBAA1400707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3ce91a5464f0d8b9dfda0514e5596df62f5d29cadb023b8e055185d3e91ccca. 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/SEBAA1400708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3aa23548e92b026753a3ebf35235b252131cd2a7d6c64d0fb1d761f5cf530ab9. 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/SEBAA1400709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68fa868c4aabbe4c9c74939c137beab3dadac5081fb60f791f3461e2821e39c9. Chain 2 (Bitcoin): anchored in block 957761 (2026-07-12T21:55:15Z), 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/SEBAA2100106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9eeb886c9f2b94b128e26f0653c617d282127817b4ce7079e08827b3725d70b. 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/SEBAA2304101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7cbd7c2bab65d6b46f33c936069eb7a0c7adc8776428dac0d7cf8f2cbc390a4. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/AUGBT2355257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9bdece8a4f0e7bf60dbb309181b4325bb273fb885a3f9125d4fa5638db2ec6f. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/AUGBT2361334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bc73dfc3e86e26a0ece4f9ce38e7f1e32fe3776a317a83a9908bb9988021f83. 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/AUMEV2512851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6443aff08333b9f4a3e300450e7b1f102fb5a17d540659fef201b25a800aa0e2. 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/AUMEV2547284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d40f95d778d3a6658c0ed81a12a8feb989a49a53fbd8b803a0d1c63ac6323e3. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/AUMEV2547286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5a0b1061214842d639772b070e7f305221358baf1ed455cfd5d17d69fc721ef. 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/AUMEV2547287.