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 0x41a467cce45721630e4bbeb6e2c964bb8ddb289bedae75bb3a77053d0b6c8ea6. 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/ca8f72df-6a33-4c42-86b5-367161344df4.json and https://artists.proofprofile.net/proofs/artist/ca8f72df-6a33-4c42-86b5-367161344df4.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 0x284bc59959d786202d90c77e526fb26a1bff9a3ea587f0f9ce88d1d8a790f1ff. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DEGA21802582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7866cda712f3a6df560205a1280b7636c76179a207c9707eab070964ba82a4f9. 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/USLZJ1953232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52bc3f5232551938a381439a96ebef23811363de9bd0b55d6bd62d8be5a2dccc. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/DEGA21702338.
The Engineers - Vermont (BR) & Basscannon Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x427677b392ad7cbfbbd2baf07db23ff3cd13999819d8f177eeb35f1b34cef9bb. 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/GBKQU1519482.
Eyes Of Truth - Basscannon & Zanon Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14e1f948984a4bafcc0a38ee1ddb6847669ff0c333a8b76c5f1e1f6b1cbfabf0. 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/GBKQU1519483.
Mama India - Blazy, Groundbass & Tijah Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37b303c2d505268b7751b559d523a7c61fa2e57ab2388131d2827530198df116. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DKZVA2200186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfcb09275502a91347d7abdb3ed20d26d67a9744e0f9026d5071a1c706eda88f. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/TCACY1705749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x086d61291da0121f6a15a949b6a73fa6cfbe8e78342502337b633e24a9726aa9. 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/DKZVA2300322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1869f5762ad9f85f25c4721ac767e3601e5218308b5d1bdcc097f6f62011c52. 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/DKZVA2300323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x148fd95d9d6babf8b0ebe9991f8e266e22e978554b3c5ede105c2d67e8adb614. 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/DKZVA2300062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b6a8bc2d646370345f2e0ca9d96349666cafff15322197df7d2a7c9da34e507. 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/DKZVA2300324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9740ad4514f87b873812d14ad62b11ff9675e4be140c2c95ee42bfc8040cb1e. 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/DKZVA2300246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f7c435253eea0d07d714fd8354be9d24ae2b90fb1c9de02ce282a5b7f808e29. 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/DKZVA2300325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb21d9970d42f44d38690bfe0b22d43342dd7a8ecddff4dff2670f71906f15e43. 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/DKZVA2300326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7938449f267c76bf17f70fcf8409a10bbd17d48823e1acf49ea01d5185949f12. 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/DKZVA2200162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37b303c2d505268b7751b559d523a7c61fa2e57ab2388131d2827530198df116. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/DKZVA2200186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e4de039c5d42bc2ca81a4d4e5625c9a8ceeff44a9bb1a57ff293a58699e2946. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T18:58:59Z), 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/DEGA21802668.
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 0x8828ff278c53b860b16f28955da47a51544166415c267fab7a31b627d719bcc8. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/BEY921316165.