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 0xf712c01abc4a35dc2bbb65e1f3f985b73aa47adb478f502b5c2689fcd0a4ca1d. Chain 2 (Bitcoin): anchored in block 954603 (2026-06-20T21:47:54Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c31ce8e0-c348-47f2-815c-d831baf85959.json and https://artists.proofprofile.net/proofs/artist/c31ce8e0-c348-47f2-815c-d831baf85959.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 0xf5f8e60706e0470ed6034426bf5273132d1d85b326ce74963646f21e0734c3d9. 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/QZHZ52176609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a97cbbb7b781e2f84e8721a9d9dc016190d1ba8ae098204da550791e239f437. 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/QZHZ52176615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9028ea6c06d1a24fa5d945ef2f252fa6bb5efc437cbfa273ea9570ba74993d1a. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZHZ52176617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26f07ed3d07c1442613741789e021071241131c28fc6aa8d299237667f86f15b. 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/QZHZ52176618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd053f23e529459c6935a1e4660e13ce5f7bfeea878989b04db486838b52feb91. 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/QZHZ52176621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15a3c487504b099b402c05aa9473ec55f7ec6dbfdd6177d42456679c444c7595. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZHZ52176627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2856cbab6d9968f3eed9f9579f6df2f5cb745a7d205824f17ab76af807b959e8. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/QZHZ52176608.
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 0x81001242a205ac6baab806c7a96aa268396208b15f7666bc3d89b4e8b3d74f5c. 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/QZHZ52176610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aaff3d7f4073c302d0a9a86838c36b5e2ac5d7ef2ea6f5add1ea1a81e209952. Chain 2 (Bitcoin): anchored in block 960311 (2026-07-30T20:45:02Z), 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/QZHZ52176611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15dfd4f69d234bb8d20a69e8e0155e563578cd0dee8eb4e8fdd3cdefd5700ff8. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/QZHZ52176612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2f3b71a604728bdb3be7310e3a1b389dbee008fe55b92dc8920916ce74f9d1e. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/QZHZ52176613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34633c5f1815ff4f3ead7ea1d11ee6a468d8f3b79303dedda37aa7c5a6ea7136. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/QZHZ52176616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71f845b70fce486183cd6a4ff924c05104225ca6ccd69adc6a44641a9f55389a. 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/QZHZ52176619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2b87276fced2809c06390acaf820e647e75b381443b3b40dc515a68f651357a. Chain 2 (Bitcoin): anchored in block 960435 (2026-07-31T16:33:26Z), 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/QZHZ52176620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf653e896ab86969e463a14f8a1042e999639b3cc218748859e4f38b45c2cce5d. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/QZHZ52176622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x044085003e7401317b737dae9541d0f5749d7e5f6653293af9c8775e55311934. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/QZHZ52176623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd72e80b9adfa8b47ab15ea1d57881687b0b9c7036651eb0433e3f95254ea66ba. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/QZHZ52176624.
18.Pout-Pourri - Aquecimento do Bota - Vou Botar Devagar - Avatariano - de Kbça pra Baixo - Meias Novas + a Pipa - Zuadinha do Amor + Vai Tomar Dormindo- Vem Com Peito - Na Humildade - É Sim
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57dd13fd1a11d1aebfe30612c66703a60cd2ac11be057da50c936693008ebde5. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/QZHZ52176625.