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 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 0x971cf61b8886fbd241be4c071146ec004ce59a663b57043eca21aee0bba478ef. 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/c9b29351-7a18-4b6b-8b19-67533eb25578.json and https://artists.proofprofile.net/proofs/artist/c9b29351-7a18-4b6b-8b19-67533eb25578.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 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 0xa3c98a2f87ca7a9d73172048547260896b95ddbe3f15eb373d14997f8979e6da. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/QZHZ51967222.
El Encantador de Serpientes (Audio Directo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1ec01e782f6adc4d67d531962c11d196ea2e3d4b56d30db5de6bbf499475490. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QZGLM2453025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf53b405d5d9a98f1f16c08a26aa9b21dab2306d54006cbab5fa23bfe26d906a9. 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/QZHZ62127599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x793ab3e077d532e8c6569f0a78173ed086826340fb4bed814f494b9624a8b817. 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/QZHZ62158127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x141537f0520f874cfd1fabdee1def927e59daaa2cb20b99cd057f1f596c8d89d. 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/QZTVM2327880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24e0787d6003863d722a95c7e55748472f541443371acd87ad5f422bf0bd2361. 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/QZW9N2216173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45f576a58a40bd986eb389b328159ac88031c98dd3fa70fcc3542bb17110789d. 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/QZGLM2159112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48b17800a8f8c1f6e26da3e8f125be24089ebccb149ba7a3a30fe60bd4fdc56d. 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/QZMZ92466123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae35400bce8ad78f5cc23081151147ae84ecb9a5276a5f0fc007f9369a2298ff. 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/QZW9M2206256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70ed68f2e2bd9c13815500180bf7a4c57b49c5834f884947892b6656d873d4b0. 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/QZGLS2280555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e4917643a6faacd086a53c1debd1a57c7b77b139b811cef6167395605ec0d7b. 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/QZNJV2246060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcec45c752e7b5a712a19244474899c937293eec75356471c96e63dfbe0a8ad50. 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/QZNJX2051110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x659d5a5d0961486be2435348017ae872c120ef07379e56a414ebcb4486cdafa2. 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/QZMZ92081841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe166864d8378ff07d147802e4441882867663602e2e43247b1e5255ff9fc1953. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/QZNJW2089084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6724e6f6fa127c61b24c658e588054dd543571a1ca833b6f072d58926ac063c. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/QZGLM2399963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdbf9749123ce313f63d709f674eb174f702a6192ea89969088a498e509d9918. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/QZMZ92229912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bb6e78c16685620e0999cf4334b7056aefb8808548e1824210ce407d0bba66c. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QZNJX2054964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f847bdb481282a8e5f6051f61d49c906c927f00e2736f955bfc9196cd3c0273. 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/QZGLM2005759.