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 0x8bfb86297d1ecd0ce748f07bd135da0ce6f1d6b0eadc113fccab9b4ad45088a7. Chain 2 (Bitcoin): anchored in block 953626 (2026-06-14T11:41:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2c5d75af-006d-45f4-83f0-80e21d41d449.json and https://artists.proofprofile.net/proofs/artist/2c5d75af-006d-45f4-83f0-80e21d41d449.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 0x47a4606eacbb7e844639c36485756005995990e700cf545fdacb99c4315758d8. 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/QZFZ62508715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7671eab5409e9885b4230c5f14e58c90cb454ffe27e58306d79fa75d2289526. 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/QZWFJ2366215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fb2240fa02e247a8586871ac001cde562de324c4fb69650b18aea3937fbf624. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZHNC2298880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c8c7b960d2ce33b298f391fba54d424b54043d14f746ab5421cea42ca09cdc1. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZDA52243599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x909649deb4ece10df7e48b9468a89ad6ac943f498a2bb14de776d54f14798a81. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QZK6M2197849.
Sesión en Vivo Teatro Colonial (En vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x179b56d453187208271e312e4698728dc5eb77706428acde81be085b3e25f175. 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/QZFYY2190044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3e3f2ee369fdfcb2e4e0936ed9238c1d4190e2c428ec52e760df225ed6f4527. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/QZFYY2190045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7afb11dd1f10e1b9b7bddf9bd957f2a63e66cc451f5b8518eed9dbd4afca175. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZFYY2190046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18eb73e73090a4a76db67ff5c328648d98e3507fa17ebbf31b0b733c0c71a919. 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/QZFZ62098515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e9d9af006e44131029dbb0133b17fb4fc93c66de53ad2d184c6a419e55589ca. 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/QZFZ52088048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe76fd6fa849b5277fd9ca15f13b7aed79fb9ee556021c901502a58692687bf82. 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/QZHNC1948519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1c7d0360412867ad34b79d07d45111d969c3aeb96153a748de5508aa44353f8. 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/QZHNC1948520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x163b1987ae012f2f9f443854ceebb0695973f2f1cac90aea614b881756c7116f. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QZHNC1948522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e43f648cd106070bcd7afeeef8236cff92a01c8ad9cc91a09c5fd8e22f8fb25. 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/QZHNC1948523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b9fc464eb50195bef402f920dd902ddeb04af08d0ae94c80fe3ace161ebc037. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/QZHNC1948521.
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 0xd2a7f314e1f4945de3ed8ea7188a577c0291e73ffa2e09b4e0b0dc68ee9ee95d. 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/UST8K1897158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76893edbe65a918f9132559bb306c43e32508a2aee4db764cac729054fff9a3a. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZES51802615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfedebf91d421156c8480e213e9216a90b8ee579d7b548e47bfd5580fadb523e. 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/QZES51802616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82a34bebed167a37e21a8e575368ef87140968ae6db625b79a36ec941c9ff6ef. 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/QZES51802617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3241c66798fd9f92b87777bc826ecab4fe02a2e435b37f2d6ae9f46eecb8c1a. Chain 2 (Bitcoin): anchored in block 960223 (2026-07-30T07:51:46Z), 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/QZES51802614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10591eb3b91e29d7ca0cda4c22f819e6f4d92de89bde7bef95a1f5f5b1c939ec. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/QZES51802618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3408a100ab4418c18c4dbc693ee71560716497202c351f8539d2edda5142cff. 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/QZBRF1869206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06bef3191997139ab3229594cf6c9325b9e9fab3951b12197092f880c8584f01. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/QZBRF1869207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1858379ad1a89d121c10d413a6071264b8a9210d408b707ac7513f87e1e9d072. 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/QZBRF1869208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16ba9d3fc4ac069afc05d3d37bc41659ae2937bbb79558f277b3db1ed04530ba. 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/QZBRF1869210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1882357062c58c1a947b8065ad14b1e90f27c07fa6b7902460de07d63357ba61. Chain 2 (Bitcoin): anchored in block 960170 (2026-07-29T23:52:38Z), 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/QZBRF1869209.