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 0xa0cdc6d0ea2db675dbda529c88d66fa5453e418d07e8cc4f34e9c721181da484. 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/abdccc85-5db0-45a7-b7ae-376dcd95c849.json and https://artists.proofprofile.net/proofs/artist/abdccc85-5db0-45a7-b7ae-376dcd95c849.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 0xa14c005fcb4bc072c7e8c7c02d3164204baaa2d05e50b1c8d66cf4f1acad969a. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZK6F2017983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbb66060aa796b8bb30ce2714ed865d79c3e94bd29b59e99ddbf1f4d29b915de. 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/QZNWZ2027919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e934331a692e2f606178c99c4c828ca0ac7ea4fa7457c5187448461ba767c77. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZFZ22262858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fc91fd9d79c7fd6aef2103321ed65565797946dafbdc62322c855c3d76bbf5a. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/QZMSB2200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde686a4179263af82ce84dc9d6b9d25440b53b16046fcba5e69982152260d5b9. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T23:13:35Z), 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/QZMEP2213874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf21c3b57482160c73656bb31f2b3c3ea0a945bc6d49f7b1c30d3fc040947fe60. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZHN62357030.
Viewing Objects Through a Mass of Heated Air
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12cd498179c73b1729b301c9bdc6be39ea02d86c7bd7e61a86d6f0e8016f4605. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T10:55:36Z), 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/QZFZ42442597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe03c7cce4c180697b61b249b42f60b0f72a4dd63bde56cd5fdff5f401f13c08d. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-16T00:39:17Z), 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/QZFZ42442599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ccfea9ccb265379e0391d7be093adff0b2720956bbddf2d090b93b63d8f22cd. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/QZFZ42442600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d5e639ed9162912853efa6bb213b4e22a0aa1037ab6256e13dfa4fbf164fb90. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZFZ42442601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe100d9b0893b17f21e6016e5aa6bed57de29789e671b091d92a2b2cf9a789787. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZTBF2528305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f174315e352ccaf17b5a838195ddac6b88408c9ab1f88122e79c929a5e38806. 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/FRX872184874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f174315e352ccaf17b5a838195ddac6b88408c9ab1f88122e79c929a5e38806. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-21T21:35:38Z), 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/FRX872184874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf04df1586cd2bb36f1676b33bd8a012d4e5f3ff2287dd44f33b6ae25352a34ea. 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/AUXN22426449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd183e9bf7c77d9f21cfe7ddab13b89a2ad697678bb1eb6af01dd9d5cc1f8250f. 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/QZMER2211714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd183e9bf7c77d9f21cfe7ddab13b89a2ad697678bb1eb6af01dd9d5cc1f8250f. 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/QZMER2211714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabca374ee3c296ea713c2b08c4b346d5dd2fbbf829f890105805bbb244ba2ba2. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-22T01:04:45Z), 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/USD8D2418012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabca374ee3c296ea713c2b08c4b346d5dd2fbbf829f890105805bbb244ba2ba2. 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/USD8D2418012.