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 0x2b2f6fd4b3f5811a75c4c4aac4e2683ff8982f16598b629b90a2241d5b72bda1. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8bf09710-40eb-4085-80da-3388687ab5e7.json and https://artists.proofprofile.net/proofs/artist/8bf09710-40eb-4085-80da-3388687ab5e7.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 0x96ad453d45e0dc3431a915df6f37269860284fa77d5b03e4315ef99b514fc3ff. 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/QZNJW2112580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x597971d0daf04086729fa1c3014c3a8d5b9017648baffa2d1700dcc43a5664b4. 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/QZNJW2112581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x573a732e164e498d5730b70596f44f16efa37296e55ee26e2b138a7e7959bae9. 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/QZNJW2112582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79d4a9f5d7cac07b5b47ecef47dac6310ddbf0548343944538d2ca14ccc85ff0. 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/QZNJW2112583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdebd93b532082aad071adbe71c8a0eea3fab66bd0f837f328548f080b21fe8b2. 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/QZHZ52184180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfec8df510c0bbfa54afeb48a1bb82ed644dcda2be8b205a285f4ea4751de4d2. 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/QZNJW2112584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc1cb06113b07486fdcec1c5ba18e9474e163f146ddd9cda6856180def7de9dd. 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/QZNJW2112585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x228d334f150c83195fc312a7ae39f38585dc8c1937bcc492c715b2e567869e2a. 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/QZNJW2112586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccfffcfed2438fbe104726439cda64e522b5cdf2f50d57299fb0dfe906ad595a. 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/QZNJW2112587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a2ccb0063c4843e3b7cc7b0898bf068b61201f37d71c712f56dcc80355d13e3. 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/QZNJW2112588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68a6cf7ab120e45145ffaa3ed16288f7642d4986e4ec205997c237dcf9fe362f. 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/QZNJW2112589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34d86936d789c458c4069881a34ffac22ffcabd43cc910b39b3275222e8091f0. 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/QZMZ92173768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x574a41b33ea0e86c64ca4c0f6f17f40148ce8e9a2da71cc72768ea74aa386dda. 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/QZNJV2101742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x866af9a7807b81c5fa57f1aab47e2c12f8307a9533588ccb9acc168127fc6481. 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/QZNJW2112590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x306256d623d9cdcea732021f8d4f992a8c72361886ac5a93de815952ef4fa44c. 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/QZNJW2112591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72115df405dd4e87b14ecf6479086b5a6a22f81912d52984e3c3892811d7272d. 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/QZNJW2112592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e70fb6173ee949b888d6087eeca4a8ce86d8ab1a6c4d6a3c0aec9395c8c69b8. 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/QZNJW2112593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0302ee06d030959cee9a65f571b545ac002345d9325dea2131badf14b4f5878. 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/AR7M71900019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85b3e216e5a02ab81ae50a44b360ba1f9779d5bec7d3e20d741802ba4a13df88. 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/GBLFP2132540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x211f75e2891a41e860a79570bceebe62e720b4f8588a00cdd105336f5e874be8. 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/GBLFP2132542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9355bab95cf81c70db7030d04cc18d5f8ca397bb67836645acc05ccd8fd43f48. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBLFP2132515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x450d2ab95261ac9d1ae9f50e0a817228aace669e964a72cf7f8e4a86c7306c74. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/GBLFP2132525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecd6fe3862974d50eddb666c893b30473a7ca5d717a74b2ac7bc8314456b896a. 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/GBLFP2132530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60f10c7f5c3329be7728ff2a89a7c49284afd4e49a50d857480d739e34d56d2e. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZW9L2262060.