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 0xe2886b6a60473fd86277b7724de671a3da62f6eb05b407c1b6ceabd5f18e3b59. Chain 2 (Bitcoin): anchored in block 954553 (2026-06-20T11:51:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ac3d0efc-9be5-4cc4-b27a-c4937c19ab4c.json and https://artists.proofprofile.net/proofs/artist/ac3d0efc-9be5-4cc4-b27a-c4937c19ab4c.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 0xf44d5e636961118429511088791f4183e4e587ab81245645f5f3f2d40b96310b. 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/CA5KR2343086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc075a483a66d03995435d1e93a12dbf8ce47f21210c5580ce66583048e0aad16. 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/CA5KR2343089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x863c80530cd285509acf439868123011618abdd439e3f471f38a149f0a4913a5. 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/CA5KR2343091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabf6c0b2ecf2622aaba5f4ee750d012963b88b8aa96f36704c9e6f8952babd70. 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/CA5KR2343092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4631cb49493af91e646b59d4a3a8a5b8032072dd1559e41af87219e6d4d96a90. 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/NLRD52353011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f79d8c51fb63fd8d27e506ac434fd9eb7ef20a87f1c3325058a530fcb62f479. 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/NLRD52353015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18c7cbbaaaadf88473da8aad34e0a2b5234a217743dfc7b265ace6015a8a6828. 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/NLRD52353026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x223769ff36f1455d19dfdae88b6736048bf0d208a203b8ffe969979e8b254e3f. 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/NLZ8C2300665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x886dfacc49f55c933e1ec282714f93bef673caa69076d34623dd5d5671350eaa. 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/MXD782500388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81ff9c11cb8328e24a7cb585ac470028517b8b9e4ee0d7b993282d4e4aafce49. 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/MXD782500389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1633d04f2222b9547155e4a448f5b06dd3b98bf99f46d9f1df2c43ee4cd981cd. 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/MXD782500393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29671f892aa5c1ac0c30d5d0daf8079210b79692a0901aca1e81a2aa7a1d1dcb. 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/MXD782400728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53835824eee7eda4dd1f82a59ff64c2d13f021b470b6ba787d08f6f40c6740e8. 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/GX3Q92562709.
Las Lomas / Fuma Con Los Panas + Remixes
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37f2592db90002fdd95a774bb9b394036dabf4f13e4dee8d167d1eba58ec656f. 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/MXD782301410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf6a62314da6a0c68f09456f4acfb3fad28f2e5a3787e7f71751a1cd7d8f1a6a. 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/MXD782301406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72bd7d934beb7ef72acbbce38ab09195fb5a76215c1b81309cd094670fde55f8. 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/GX3Q92562704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53835824eee7eda4dd1f82a59ff64c2d13f021b470b6ba787d08f6f40c6740e8. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/GX3Q92562709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe752a1e2dd7724c091fb236303a422d97401184306885436e91113b1d1e0c489. 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/GX3Q92562700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71cc367eac31d19a86dcdb6e91972c353e34c83f3c1a834b21d9cdcaa76dc91a. 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/GX3Q92562705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96fab91146946774a7d89b77e8268d17833a0533fc0273c8fca48b754bfe02fa. 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/GX3Q92562699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f89cb7272f9244237e1f8a801d88bd5a6ca308f6b86a3d3f0c21340deaf1c07. 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/GBKQU2251517.