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 0x52c0981f4481a29ce6aa0efc8ac56db7a7eb3aba96460d1a922c4b3e29f58cf9. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1fce45b7-370b-4ceb-9299-e4aaffa18f47.json and https://artists.proofprofile.net/proofs/artist/1fce45b7-370b-4ceb-9299-e4aaffa18f47.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 0xea505ff5e1b802eaae44cdb79fb31edbe64a43cb098abe92089aee8d61ffc6f0. 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/US7VG1500290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2baf9bab1eb2c6679c997cd7e1ffa8eb2f82a1e8c441eddcf732fed3618ab590. 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/US7VG1500291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c9b12c929d657be8d9c4354d0d0d6966b66f6ee1b2baca2d7fac7ef36070ca4. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/US7VG1500292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8998757995ed5af0353a57709731171ed8b99872ecfa221d4bd9b447b1257c8d. 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/US7VG1500293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1161aa91de8d11decee1b5e8bacae0a8b2265d28d3eb7ab1536356fafcde251e. 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/US7VG1500294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61a990e0a5f49a5cd64a0fe89dc1d27a5ee328a32f529b99075ad7bf057826e3. 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/US7VG1500295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07c23f647dbaa2490dcbb2f6f877d42c77717c08661fe51b74b18ab36b49dfe4. 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/US7VG1500296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d70748e14757756afa1d1ba99ca7812dc5f65c136b0910b755050f3d73b6bb6. 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/US7VG1500297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ef5ade6ed87bd3c0b3c6d2a8ba407c789991b8abc95e1e59452782c1e1fa0e3. 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/US7VG1500298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a4cba217ab7557b57c82de9b9d5ca19165ca076392b163be43e209f58c51d5e. 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/US7VG1500299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d09d0c38bf2662b2ec630140563f042a0cb06fa167dd946272be22007535835. 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/US7VG1500300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4146d1bb7750dabef1abce8b0c2efb059badb2f2eddb8b5c3b9297217880e848. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/US7VG1500301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21459a7e17e8f968c8146025e718fe98ac2cb508bf53d83dae7eedc1fd76ee39. 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/US7VG1500302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5a0d016171ab722c27a80c5d7d6eea2317aaa0d9be21f8215c347ada0b654e5. 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/US7VG1500303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba9c4eaf7f6258777c6ebae8c28a16d88aeff7d142305b6c2fda247fa86762a8. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/US7VG1500304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0b2054de0f758211dc61910efa97db6d7b0063278b9cfee65e43489b0d2af1e. Chain 2 (Bitcoin): anchored in block 960181 (2026-07-30T00:53:20Z), 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/US7VG1500305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c10e3eff8be6dd210f6ed07751cceadbeb49284ac95996f0e11e7e868e771ae. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/US7VG1500306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36d9505204c446bb767beebc4628420881ed69a886fd635f62b708ce00a4238c. 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/US7VG1500307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56a162b71b078bd72b9d5f11ba5af01914992688671b00f19839459e6d5ec715. 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/US7VG1500308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4be4fe73cd9b7f48378967c83492ce853755ad61796d4c4ce12e70e378a4f6f0. 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/US7VG1500309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca99876d81b186a8dec836dad5990d266d0ee65ba0efe5875ecbceefca3c7596. Chain 2 (Bitcoin): anchored in block 958401 (2026-07-17T11:10:25Z), 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/QZ5AB1632542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a8114dd5d62208d0470072ef180e8298e76643d69e7a035e971fda8b49babec. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZ5AB1709860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1a41d71a7cb3c9ce27630d0aeefc6856d11e880981a23b01708f618e8808046. 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/QZ5AB1709861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe1955766a78d97eab33e6bffc305646806da9b6fd41037e1d456bcb015e51d8. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T08:02:12Z), 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/QZ5AB1709862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26c45962990196228e3021b8b7a4ed273c8d3ada88eac0422e054b34cf697dc4. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T01:08:10Z), 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/QZ5AB1709866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5090eb046ade6f0f3ddc586207463a5e571d3ce0d9e9788ef292a747f15c8be2. 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/QZ5AB2081917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x796f1ef74b08cc71aa2e2c9bef61e0c2aab51a695ece18b2d546236b7e9a7bea. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZGLS1932864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a1eb92b1e9057bd9e3328bccfe1f4241cafe0e24ad935a165987fa3b744d425. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/QZDA72234896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f0032a00dc707901784040432ce986186fd6fe1ca7bc82133457415770cf0c6. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZTVM2428946.
El de las Manos Magicas: Underground Edition
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe37147e76ef161db9bed84fd25384e951f5f8284cbe82737fa46418d806aaab4. 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/US7VG1930584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c968f2704e98c46276706b1344649d4edda8bf0e01e20b98cd4b392a42479f9. 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/US7VG1930585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6e6a729522a2b1d4df0440271af3bee5ac092559c416b53a6d5ae1b01bf8475. 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/US7VG1930586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87f4c3e069ea30473c1ae74a31abafb21d117fb4d14ac882f8231c133c9907c7. 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/QZS7J2423811.