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 0x3b07e2fc6ab122dc30ba08e86813081df998867cb6be145c5ef4cda94939ad01. Chain 2 (Bitcoin): anchored in block 953660 (2026-06-14T17:20:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/550a3966-5dfd-468d-994d-9a4e88e628b5.json and https://artists.proofprofile.net/proofs/artist/550a3966-5dfd-468d-994d-9a4e88e628b5.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 0xf7d6d686d1554a3f63190127826b90531a073b1eb4566c3e09888cd67ea0a2fe. 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/SE6XX2556267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bf449eb957fb46a71d5092ee65ee1d7c24522709e48ea747efdabddb13e6d8e. 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/SE6I32578891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9abcf24350f3f8ec2a3c8d69f75d78ab1a6cc6bafb2604abfbcd39de65ebbfe1. 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/MXD782203521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fac7321f9e277852257ce980074f07298c4af56173404e76142defa46dd9ba1. 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/SE5BU2583062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a2835a66e2f25642120b506b9959633582c948e12979fbe9def111e78905b48. 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/SE5BU2583063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa902e82191428c8f34256bcfec4f24d9f4708c6cfbafbd7d2ffc7d86a53dcc2. 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/QZNWV2580263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9548647426c2c695e7096a4f253ed83d5d10619b6649cd606d327b413be6d586. 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/QZNWV2580265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1a4b9ecfcd41e336db8410804795e4cb1fca7ea276a611eaaeaa74600d5e808. 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/QZWFU2481355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13fd4ecea7d4fafcc649773ccbe246892118b69ea0caebfa3c622ce8a27fcd08. 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/QZWFU2481356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36800d20d35d3c4a87eebf0d66204c359944c627ed5edf704c31da355a1bb645. 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/QZWFU2481357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a026310095aea4e2b72a576ae988ac0dda576d024feef4a72241bf9ca3518eb. 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/QZWFU2481358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd91bde0b011637b7ff4987036f9def90789a610e1b11f4742a790eb144647a86. 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/QZWFU2481362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x672730bf53de55c70a4ba7652e2b185245584acbadc51ad71948fd8133ec7321. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/QZWFU2481359.
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
Música de Barrio 2: El Desmadre Continúa
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb38f35db7c0d5a6de1e6ab36857c29c8cd187a4f181ae9f3496a1feabd668045. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/QZNJY2332067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x459d96e4a2483bdcd88bf9852639ae11db136ae22eef69fb1e2a9d4b5de5d1ac. 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/QZWFU2481360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcd17b5485d35d25ec930ca8ac9817d1a4ec236fec095d73ea7a6eb97c0ad88e. 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/QZWFU2481361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41745562dacafcb4b446b353f9b6e70ab53db372d7c074b5c033661b9a19884c. Chain 2 (Bitcoin): anchored in block 960193 (2026-07-30T02:05:19Z), 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/QZTBB2385378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fa6eaeb07349a283ce9fbc00a7275e8569ef64e96a22f0dad44e754e9f4ef52. 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/QZTBB2385379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2bcee3284338206e5a5b5026c6bb5c80c468a9a2c052996c538971067ae2c7d. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/QZTBB2385380.