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 0x88d49383fc63b0a5b151f5ca637143e2ca1d45d2ba207d69c4a2faebdf73a374. 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/91b5c0f7-3620-449f-91f5-313681ab0cdb.json and https://artists.proofprofile.net/proofs/artist/91b5c0f7-3620-449f-91f5-313681ab0cdb.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 0x1ce1475b26003888cd3939aecd9995525a5209796b0d6d10ba9b14951a7a9c81. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QMFME2372235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c921ccdfcd1b2c8677c98f5c4685daf24ff02db88a91270af9eb21774378754. 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/QMFME2372237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a9c10565606efd786b9f0e553017116466bd1ce9095eae95da555c91e49d1cd. 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/QMFME2372239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa005d06cd6790a84843afd72d2578a8297f6f0cbbb679bedf61c0825282228e. 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/QMFME2372242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8534f6be0e1a21552499d11eb468e7f27746dcd878a9264fd12a7ccd23216b15. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/QMFME2372236.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x039c8c2564b5a70434fbedd7152216749c3d9cf04bd212888e8a73554346370d. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/QMFME2372238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5264953a785b2089cef17f4870a87240df07267a1df500ee42abef52b21c065. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/QMFME2372240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d5dce1b80682fe39356ce72bcc4e3c5274f6968869274a6d975f1d168bfdd2d. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/QMFME2372241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1984775267c1308bc4066afbbe593759c8c729200987fc852d7f1d9d0e330ed6. 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/USYBL2301119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x400fdc072daa13ca01103adbdd027ee9bbeffe1fcfa5fa6d674953e529adb01d. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/USYBL2301116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1579fea70b1689131706bf681f84d2ba51468da0789f5d3b3d3c561a87a2b693. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/USYBL2301122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x115089dd11a4125eab6f321c4a9d9678fbd6100906e902f37c19569c8ba34c2d. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZFYY2190773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc58730a7c3d10986d8f236c54aa75bf233ed29cfa2ad43f3d79f735750c2cb2d. 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/QZFYY2190775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x626f6b97300d388d8cefc516c40ee4216b090add59616b2bbe9ac4b4be5bae30. 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/QZFYY2190786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4379f7b9f598388488d9cceaa595745f6e211583d76da04c23bd0f7dafde83e. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/QZFYY2190777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb65150ff7d4c0a4a423e831d13d7093b1d7ef0a32333201e43841a9f0b18916a. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/USA2P1918950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23e755d2143351c8199dc126fd064304bdf564125f2cec6839271dcaa09b6169. 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/USA2P1918951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1437abb0890a4e872957ad62249cf392f8fcafcdbbdc254dd95df61bcfff8999. 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/USA2P1918952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7ad06b9b2cc4916f472333ad8a4aeda6d6cf40bed8a3b96df1e79706ab1c3f5. 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/USA2P1918955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbb8cc7c79c9b233910c408875de75775d42c45fa3a014cbefaf6ac182d514ed. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USA2P1918958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05561102bfc6decf60027740502bf5ebd9ac51c4cadf5210a194f90592dc5105. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/USA2P1918953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3425c7d2d69e478613c111598b91417c1d918880c37fbaa6388537cba36d6fb9. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/USA2P1918954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7196cb8b8cd5bb2ddd6db8ca1a6517f6da7e45d079d578d4ee5ade5f2ae8468. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/USA2P1918957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf607a260f4e591f4cc110c6f054a3527281c8dbb6f4981087f123ecd14c179f1. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USA2P1860512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c44b834ace621a9174bd33064616017934076beebe62a48b506814f2ddebfbb. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GXCLM2400001.
Rubber Band Land Calling - Bored Lord Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2fbfaac23af88abb97c8c49ac7dd6eb4b7c42ad40ce1c8938bb93c1024d75d8. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/GXCLM2400005.
ACAB (Bored Lord's All Cops Do Not Go To Heaven Mix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc09342786f8aa3b90ebf89f41c2e96d71ae34a3f5196bee73af8d8c75cd98c5c. 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/USYBL2000436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x678cbbe1b842d9f04c96f39301bf6f7830af7a1500a831a7f91ee9bb93ee6c0d. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USYBL2000463.
Never Been In Love Before - stud1nt Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9f72365c9306d8316438953f4165a4e174b958b94e02e1b5e089347d8e5ffa4. 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/USYBL2000464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47d19483896fded354a2e37bc07c471329312f2f2fd7c507d45cec89f02fa553. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/USYBL2000462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd18f49a4e49ee5f777582b9ceba50a50396b3c7b8dbde53135b77a598c6bac25. 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/DEOE82100054.