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 0xd706f0709c93e827034e682359777058aeb750572350de364bb349016e967f26. 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/379d4a11-8fa5-408a-a364-7a47c3a315b7.json and https://artists.proofprofile.net/proofs/artist/379d4a11-8fa5-408a-a364-7a47c3a315b7.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 0x1823837e317906c025ef0b7e0b52695a8bdbbf47510754fb2614efa1ad4a0c79. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/GB96Z1101549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40acefd55f0075ea2abd1d6d54b8035c3d8d85aafbccc1b10466650c69abc55d. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/GB96Z1101175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86b54aeffc434601b6606e180ff9f5065ea7f96ec2211f8f4631d4c42e8e342d. 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/GB96Z1101177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a1405fbf2b163cff8eeefd14be8db269efd7d52956294652b5bc7b9c578fa9c. 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/GB96Z1101178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07bccf4b1fd9c3d1feb7fd646922dc4930f1aa3933e8a8e1d88525fbecd1c6e0. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/GB96Z1101309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x118f494766da497a1d38842d722626fe28d185e5000c0dd0ff553fa605c63a45. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/GB96Z1101310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c11ac9355ff67c2d0f8e6b137c81bd6cca256ce5a37eae3b6081a65a3999335. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T01:49:25Z), 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/GB96Z1101311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1389e2181a89c8963b38d2c2d42275723c94bc51629ed171d7d6831f3a232ac0. Chain 2 (Bitcoin): anchored in block 957711 (2026-07-12T13:56:57Z), 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/GB96Z1101058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0067f460c0eedefe96b9c8b66a8646ab667099ec3bdb2a882859280a0917bde2. 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/GB96Z1101059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26f1a372d3add7be123d7a418c5a35dcfa799a4c4462c452aa44bdd93c08d068. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/GB96Z1101060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf75a18e72a45d33e883bd2046e78100a6cf805c12603383ed07f13aebf5dce84. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:10:49Z), 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/GB96Z1101062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98b842168f140f96f4784108f81babeb0b5246fb6f183310b64b4a5ba4ca467a. 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/GB96Z1101063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81b8f21ea4767d802a316d651c7a605ab80731d0c5899040c1f662427c10553b. Chain 2 (Bitcoin): anchored in block 957709 (2026-07-12T13:52:43Z), 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/GB96Z1101320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc36f981f5b1f41dee549d84ab53c29dea04a9ebe519f37ad734ff96a8c4dca7. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:06:46Z), 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/GB96Z1101321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88e6bb9aefb5ff1157773d66d1afcc00a6f358ed10d8684bf925deb5d06c5a4e. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:46:58Z), 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/GB96Z1101322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92da261f2f1ead8ddfa1a8c224790ed50245c8d245677ec0967fcfaa2cf8c7be. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/USA370903605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x011636f2a5cc5ee6f17afc901a9dd49462b1115aac9db2da9b1f6d3b09e789df. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/USA370903606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09682f41480976c65737241040d2509c937de181eb0c0de287fc74717e9e0811. 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/USA370903607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedfcc23b40fca476e0598bdadcf6c2e2db8313e4084a559dbbf734bd1c6a3525. Chain 2 (Bitcoin): anchored in block 958197 (2026-07-15T23:32:05Z), 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/USA370903608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3894f606ab54c80f87e4840ec1b1c3fc480a005077cf1809f0a48b189409cc06. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/USA370903609.