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 0x7fe30fb76262b922600132df53257d3c08cc076eaca3a834d2de34f892ed2f2a. 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/0811130c-db97-44a4-bdbc-178a2f65502e.json and https://artists.proofprofile.net/proofs/artist/0811130c-db97-44a4-bdbc-178a2f65502e.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 0x8232224c9cf2eb9bbbce1eb6dd3ab281e83f564dcd08726bcbaaf0ed47cc460c. 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/QZNW72404486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77372a28d6095587bc41145d2adf1b7c7fb0e88496c2a62fc10a59a81a5c64c5. 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/QZDQH2384828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75683bce501d34ef20bd4a1ed528ecfe81d7bac1298d16b3cf7a45821de54da6. 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/QZDQH2355807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x547a9154ede2733553264805d5966d7dbb166a5a72edf62cc13b570d7a8a0a87. 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/QZDQH2355808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4de288c2c8adc803b86464633f20f41cf1b0f58de251df802f562444fdc44ba. 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/QZDQH2355809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11feec8a00e23f2d6ddeb1df4efe22dcbf81e5aba559b7c4df329bffb7a483a8. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/QZDQH2355810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x120054acc26688dfc8037d86edb20acb3d20bbe599b284a28fc9b7a04745bebe. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T15:02:10Z), 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/QZDQH2355811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea46cb89a7f0f324afa3d1ec0c2e18e3ca7ebd6a024ce1d3ef77ebaaa94730f4. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/QZDQH2355812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc443bf902cd705f7ad3cd2a88f67c963d2964b586055e504932fda35519afd25. 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/QZDQH2355813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d2437021c83d5c9e8339d83e0ccb5f8da6c1e1085fcd515fd1f389d7f9ecae4. 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/QZDQH2355815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cbaccd8f9b9a7accbcf8e8a7435165108dcd2b53912c720f3c888031223c633. 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/QZDQH2355816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cd22f5337ba110323ac0261e78429dd14e52579d4fb9755ccee715ef5558589. 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/QZDQH2355817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd20d62841247cd5310b8646386112e3ed43b68d2a0018d5bd74d3cff6151f041. 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/QT4C62500623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb34470a43f7568b0131b8cc06836bf35980e091a01ab543458deaf361056d542. 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/QT4C62500534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a79a8421e8e08536d277057673f9f21ba09ed066a9abaf9c0048a7c95606cf4. 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/QT4C62500409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b85cfdd21e306e7ec47589194a659561864152fd39d7b3f2540efcba8dffeaa. 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/QZQMB2108548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe11ca054d7c7d17086d4741f63b596c260c88ad9e3d35ac3b88cacd9af67a3c8. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/QZDFP2026829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91d90f1c528ec06c32072073fe057427f84e1e28b14bae96b273c468e213a98e. 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/QZDFP2001122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd939533526cc7bd3fa46b87d66eeb79ff3df07cf08b21429c8fdb1e58318947c. 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/QZDFP1997900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f8dad4294c12e37c9178a193f6dde8ec13d7bb6e7e5d82270773aaf97584e86. 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/QZDFP1985312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d305e797f1ecf28663180e3f30c130a2de22a0c6e457a9be4660d88a1c8ab5e. 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/QZDFP1977100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39e633b5e7ccd7fc4d30a3e527c83b7ea1ac1cf73a10f9ef19b926b1203951ba. 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/MX2832417964.
Cumbias del Romántico Incurable - En Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x431a281fb72fdffa79b4335c457536df0df56dad4778f1acd9a0ce5792754f99. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/MX2832417960.