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 0x7007cb8b33ba2ffe3dee0516e4a03d3b9d3458dad0b282ea3a901c5bab2a7a21. 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/846e5fdd-4f42-4d41-ae23-54770b8e7db6.json and https://artists.proofprofile.net/proofs/artist/846e5fdd-4f42-4d41-ae23-54770b8e7db6.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 0x8869160d6aba4b4e41a286ae1b9a69eed8e3abfc1b7bbfa210b59e47c184419a. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/QZDA82217159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ec8d85f20e21d567c02b62f37b853469b172b3ffe47dfb6979b8ea4af01b8c1. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZDA82217160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x389040c7e45c1fcf544315b78f579f0bf15e8421d6bcd3afe182e418626ca11f. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/QZDA82217161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc32f33cc49c9686a4a04f64512c87b62b24da1d67d311b6bec49b0cf0572d0b9. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZDA82217163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03a0b9a74f762a4caf5b0e5f08594a02ced06ca296118ee3e012cee9099487a6. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZDA82217164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf49c9ee37e364a337f75e47ca097a04e7da073d88934adeaafd82b712c4f5802. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/QZDA82217165.
Fue Dificil (Grupo Picunche junto a Linda Landaeta)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56c732058a79828e8577911041e323c96385d86390d24f57a422f03114fe8224. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:05:10Z), 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/QZDA82217166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde37b4e4ef141d8b92297114751b4854abd333e6fab5a82afde29ad88c27dc5a. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZDA82217172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8145f2c75f47f8f9902b491f8bf52692804daf4a8245db2d7302efa798e4728. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZDA82217173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf9ff9bf1f72fd6f6551c01b918c2a98ac4f0ba766f27990b4a276c730c4b69f. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T14:10:07Z), 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/QZDA82217174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecf079569d262ef552c3aad215ac6c2e15a928809306c69bb3064692ebd5baf1. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/QZDA82217175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2d5c75c9b821878c639d023e342d296b49c964bf06ef5f8a08322dc2442b3e8. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/QZDA82217180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9fa58e6c2fbc7e3933c236aa6d341b23e5d3503a90cc4c8403a811cc8d87821. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZDA82217181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e7843213899b5b144a9ef8009b0e9b0801d36362f675d49fc1951ab8de789cb. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZDA82217182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x521fee594ae13829f7cc64d37896a3eb064aa47d1c16c03323b5c73aafa74381. 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/QZDA82217183.
Mix Paloma Blanca / La Rana / Gatito Regalón / Vamos a Correr la gata / Un Nuevo Amor
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa31bc90e828a37ee2c622c47e19352f08936a0c2699265aa7f48de3a65630fc9. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/QZDA82217184.