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 0x88d2c76c35305dfacd5423cd07c72340ae0c025db0f3ea3e7c3c453d0bc88df4. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8b26f452-7b50-4d57-a92d-73d6759e0804.json and https://artists.proofprofile.net/proofs/artist/8b26f452-7b50-4d57-a92d-73d6759e0804.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 0x34f9cf58bc9937723645651708549102dec3f1e82bd746d1b252e48131b278cb. 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/QZDA72222351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a99e43b4b77348601d28dd54fd31bf67659c780c13bba4c24e15dd22eaa7888. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:44:28Z), 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/QZDA72222353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd40e2dbf6a53cf67b42827a2fd34c4bcd5f8b7a492ea33608c879bf6a067cce5. 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/QZDA82251192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fb19eb0e39cab22b3bb32f9edf8146fbcbeb629be9fa469ddd88f6fdc2e349d. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZDA82251193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73a067bc5491b0fd950984c65114a871ab98dd24de18f843e89d514190f36f61. 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/QZDA82251204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d38f2e33c65e06c1020cde4ed934b51ede44e3baa357b7c284749b850112d59. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T10:58:25Z), 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/QZES52263520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12226ecf26bb5b4c45272d32d0f7f555c645367af020f8a29c9aa9533829220d. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZES52263521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d2a2ef2c0b2f356eda70279739668da11e38d6db67ba15dcb50e24b8cde26d4. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/QZES52263524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb026eff96c23f73d362a1edb6a5adbea0a8a58196cc57f9e2f83ae6477c97e4a. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZES72201381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9210583b1eb125a8a3b2a2869654c71b8470ae3b3b314eb9edcb7067652857c3. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZES72201382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77b3d627ce028d814663725a2090bbcf5c2bb9a0a5d10b7f0a7b8c833362c889. Chain 2 (Bitcoin): anchored in block 958587 (2026-07-18T17:06:26Z), 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/QZES82291764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca7a3cf5ef868575bacf9bde4afc5ccff342e03593dfaeaa8f352aa7bb58a73b. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T12:47:22Z), 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/QZES82291765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12a9e97a2d8e76955d82944137a641ea04b4d44024953f91665663b202170938. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/QZES82291766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x797ad28118c9e0087a9859dc2e8cefc7e1a6d5df3dc762fa8654cb0008490eca. Chain 2 (Bitcoin): anchored in block 958617 (2026-07-18T22:07:13Z), 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/QZES82291767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x520dd020d9725ec65113761b7f6955a3a364f921a5a3fb57c098d8c49edc3136. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:22:27Z), 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/QZES82291768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf725726efac85cb9cd73d734774e9dff6f07011e37e8da33abf1578983be5ea. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T14:43:18Z), 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/QZES82291769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb274a1c37fe4117abebae5710fed2f487f331c76a38a411ffd597b9172e0e70. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-20T22:01:25Z), 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/QZES82291770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83e6119b83063c5336451e4089fa107c025a71c7bcadf04f0d0d83b00ab8ec58. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:29:22Z), 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/QZES82291771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ee675cf0f01f4823574e53716ad74409a3cd9e32616f0ef986df4159f7661e3. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:06:44Z), 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/QZES82291772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65fb28a40376ce79ab0b46b0137bef453c2370537c00d10d08ab82f38d6eaa63. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:39:40Z), 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/QZES82291773.