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 0x77088b550eb91397a4409dfa2b769b4a63698fa3792b79e6cf9eb4bc5f55981c. Chain 2 (Bitcoin): anchored in block 953812 (2026-06-15T17:06:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f7a8f585-0f19-47db-acd8-f2f551053923.json and https://artists.proofprofile.net/proofs/artist/f7a8f585-0f19-47db-acd8-f2f551053923.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 0xc73bd277af179d40069a610f85bd41a1a1f5373dab0ab453e813d56d58ea44a3. Chain 2 (Bitcoin): anchored in block 958850 (2026-07-20T11:09:12Z), 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/GB4GW1800088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e301afab49a18320bb3eae91ecb7851d736a4726ae8244e8c60f6f9921ab25d. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/GB4GW1800090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28c9cf6922d837b1a076676c054adc6e4882f67863e189bf00c851849d3a2282. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T18:10:43Z), 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/GB4GW1800092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63566445bc0aefec8b7500d6f700bb338311db533655fc3f9250e132140567f2. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T03:08:20Z), 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/GB4GW1800094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x797ed362e3dc4648b25fee77d46f88bbe13e3fc5433b6e9a8b2026a9204af7e6. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T17:51:37Z), 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/GB4GW1800097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0799ec468918dc1ac9f0c4add649571ffae088cf204dcb50182439d9f8280e49. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:05:32Z), 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/GB4GW1800099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc321dd69074006e8047a693df6c5d1ee9ffaed09b65593b5d1b7b0c488f1629a. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:45:40Z), 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/GB4GW1800101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8ca03765acfaa127f59d4f837c2a748d8a60a9db07e9aa4aa0cace0d659e956. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T09:35:08Z), 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/GB4GW1800103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09a215de90ae52442301d5cd7b39e9204ffa818d1bcc5814af49c2e3b90ad29c. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/GB4GW1800105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e15cba0f25bcc88d2d3c6f624ddc021fe51176af1dba15eea9e49c712f045f4. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:34:15Z), 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/GB4GW1800107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19f0629079950fef8c4931ca5897619adf210643917e383ffd972b951572a90a. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/GB4GW1800108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x295f8f2d1088ec94afae14c6ffa2344d8a0556c6a1c1c82dea057e16c82ac383. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:06:56Z), 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/GB4GW2000027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31c57ec18fcc229e876edfcf6b1c9b6770ecf7c870ada97879c36e2d69fb8167. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:42:02Z), 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/GB4GW2000029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5a2f30142d79df0fe6d6ddf7a6838ced20ea9c194425e61cbedc632c89f4b43. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/GB4GW2000031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd1db88d38fa7abe72a2796edad3e03be25037a8ecac4d6a4b13e526508955ac. Chain 2 (Bitcoin): anchored in block 958830 (2026-07-20T08:11:16Z), 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/GB4GW2000034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eea232e80dbd277a544214cf0a0388ff2752667b4dc06ba73a4ff58f52d1734. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/GB4GW2000037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09b96399165e1ac402ece6886952e1914ecd935cb3e31d8a5688805edfe3b690. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:59:06Z), 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/GB4GW2000038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17a542cff2b3b1f246ff84a07267785a479d13897f48cbed21c45b43580ba314. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/GB4GW2000039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x061b19f50189732695f2040eba189971949ca6d6a9bf1b68a56cee78c07fe291. Chain 2 (Bitcoin): anchored in block 958756 (2026-07-19T18:51:40Z), 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/GB4GW2000040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5425c8691ecf91ef0c84640101fce36aa356f893beb80630ebcc09caa30dc282. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:49:45Z), 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/GB4GW2000042.