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 0x326ab023809b73bcf1e0836aa212a90b0498b4066f35e6724b29f5aea37a6be7. 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/c02e6ea1-ba3b-49c5-a588-e689904d264e.json and https://artists.proofprofile.net/proofs/artist/c02e6ea1-ba3b-49c5-a588-e689904d264e.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 0x1938c9ae9d20fd203ca3609154f587f406381af4131e0742a5f4584855fadaeb. 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/BR9Z22400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1938c9ae9d20fd203ca3609154f587f406381af4131e0742a5f4584855fadaeb. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/BR9Z22400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34f322cacbcd6390f987aa2ede8cee3ada31636d5d85b636673dd02b47f1c2c3. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/BR9Z22400026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3501795bb4f303cccc04826b0c5af898e111832a594e5fb80fea0300c1dc1cb. 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/BR9Z22400036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa28f60c2a68130e363053d92dac2a1561736e4f82d81c2653493eb1efb31f08a. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/BR9Z22400131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3a3025105d1fe36ab4eaf21eaeff8060d61a1dcbefa2fc22a7e16555d69606f. Chain 2 (Bitcoin): anchored in block 957874 (2026-07-13T15:43:57Z), 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/BR9Z22400178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe287e4e29b72b02889f30f1761e1d183357024937481730c911b47aa2bfaf517. 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/BR9Z22400192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87b316a1bf0d5aab80cb1e6230a46b75e565f98c7b70dfd1ab25bd6d39dd87c7. 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/BR9Z22500011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71658c2fc220e52168535713eb5fd1b27f71eefa1ad5fdd8777b92435646c892. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/BR9Z22500020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38bdff47a9e4ad9115bf793828639eb6d26b1531702c9b6be9c680ac43956124. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T11:03:10Z), 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/BR9Z22500083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7e09e2c3dfc5775998741887a1fcc4746d81510da9501a4f186d2dbdeb35ac2. 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/SE5751996644.
Acústico altamira #32 - Uma Tarde de Agosto
Acústico Altamira #32 - Uma Tarde de Agosto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda6cd28e7a997d2bd03ad3dc197e647e7cda33f088f77dc6dde3455bc7f08bcc. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BR9Z22400132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7044d2fd80d75342ce337bb93653444ad3f4676c00400c3ef8c6653b138c72e3. 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/BR9Z22400088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9696a80769a16a17a980c41f726f2b22dbc94916a947ad5751ac4d7383826f0b. 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/BR9Z22400125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf362c5b72e518246f7a18e7b2fb286046022b6d3f75c434a7eb56fbccb12bbe1. 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/BR9Z22500005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64f37e78fb0514e7327261b10bc180845ba231ccd1479aee1f9af8ca1be6d71d. 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/BR9Z22400209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99ea70694a2649b4839973bb95f87d2303857357db24dc969e2ada28f9674480. 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/BR9Z22400049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dd7cc3a8f2076fb9519a505728d23c57c3363401d5f309c2447de465098874f. 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/BXLMW2400024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5ecfe02f77bdf331f452bb6c65690dc4285fdb706b9608a2a4324e67558bab3. 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/BX1QP2200006.
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