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 0x8f36a300efcd39a8ba645de39d2b683282dc4f9705b4de9f0bd12638f5f9e317. Chain 2 (Bitcoin): anchored in block 953949 (2026-06-16T13:28:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0a9bb916-5715-4d08-8d25-306decfba09c.json and https://artists.proofprofile.net/proofs/artist/0a9bb916-5715-4d08-8d25-306decfba09c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Arcadia (Twilight Music Sculpture Remix)
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 0xd4de806fbb6c6c54996d4305ab218189cab68667ad6313c36623499a420bd5b3. 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/US83Z2319938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x477de4c96671a4a773c1130b9cdf8ce74c0227463ef6f1b814520ac25b142606. 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/UKBJZ2200029.
TOMORROWLAND WINTER 2023 - March 20, Live Recording at Mountain Stage (DJ Mix)
Sky Acrobatics - Tali Muss Remix - Mixed
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0fa966c44dc877c66b200fa27ceab388944f5b8c0cd47eb7c67fa9745ced4ae. 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/US83Z2303732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1119fa7e25ceea382819fc1b52c88901fee3c54e0afa2fc938da22bfd1bca286. 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/US83Z2239843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7bad991e07b0b588439e674963375ba9c58301ad49e2403c4cf6e99a926abae. 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/US83Z2215978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x481d2f0a53abf415b3284515e10f15f679b9b1ec0ed91921c54fd02eb775995e. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/US83Z2141409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27787db18372be7c4a86f824d599675bc589710bf8ec4a732973de93c2ee9abc. 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/US83Z2234887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4906734e3d07775c18217a67dbd6b4cef9f9788f36d7c050a2f982c15a181f92. 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/US83Z2241715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x845454bf52bf05a70f6b14a31303decb52851ca0ea32d980c9a7ec308dfd6269. 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/US83Z2306024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8eb1655baafb7222205d524973ebc670a7c60b0f86cfc64210003617022288a. 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/US83Z2306954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f2e7c0abb88ae68eca3558274d11558eeaa75aa21027baa7fecd9dd5d939ffb. 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/US83Z2239771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88b3511f1224307f4fd79652751e4a436c0326aec262b172b8b1aab6549b359e. 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/QZK6N2474729.
Burning Man 2022 - the Altitude Lounge (DJ Mix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6889cff470c2885c982e26f1e58755fc4538a52a9e8d63ffb21cb6ae3ad6ac1. 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/QM6N22549504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf940e7033a98a51c39e1789adc251bd84021886c189d403c5456362d161552fa. 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/QM6N22549505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3ecfd8696a97b29fe126ebad519cbcb4e8a1ed7a763e6ceadb95d9983706c2f. 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/QM6N22549507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe36415c523a9b0c63bd0fe2695e54eddc38fdc626e136538c68609840615831a. 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/QM6N22549509.
Falling Down from Heaven - Oliver Decrow Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf47d43139dadb5e866724621f5d448e0646f5986e0d22d14f7a010a22f887bec. 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/QM6N22549512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x578cc5f16fd9c206eb94e398df299f51486f5a0df7312b55d2912798a41dd9d2. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/QM6N22549510.
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