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 0xf83af6d53efa7e680e227f1f7d003b1b9f3a798053395308af51eb9f5e35bf04. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ff754af7-a434-4bc2-bf4b-b9ed9286fc90.json and https://artists.proofprofile.net/proofs/artist/ff754af7-a434-4bc2-bf4b-b9ed9286fc90.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 0x345efed836e06f7daf92ac4db90eee4a1ea800d58321346003b074ebd307293f. 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/NLZ542300926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ea953aad636324d2e2a2178d09368ad8d41c33f7ed77bb61e9e7eaa469d5c35. 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/BEIW12400311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3a739081a7c7c3e36535aac13c72d369338ac7d74070a28163ee96ff6af7c29. 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/DEE862302175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eaff64a73c99432c2e9d28c009cee59628197061c211bbd6b0fcdbede8133c5. 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/NLQ8D1800141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6615f05a3e94268488cffbd6465e776a293d90f472d26ac9752119d4d2dbb9c0. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/NLQ8D2100765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeec007dfb9fb53ead8ffd612aa7a7c9323ef0172ecd5d5ca1c8b6ba1f027c598. 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/NLQ8D2200041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc60e8759422a6354d71999da95529b396e905b6398c645849253d2a8590217dd. 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/NLQ8D2100664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eaff64a73c99432c2e9d28c009cee59628197061c211bbd6b0fcdbede8133c5. 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/NLQ8D1800141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cb51e4c4f84102142759c2dd7649f08bb4208a44e32797a3f266eca16097eeb. 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/NLQ8D1800059.
This Is What It Feels Like - Maddix Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1767a6a466586260d87d06dbda19a773203d8c2a3d86994f6ab013f9c54d42a8. 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/NLF712002061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8fb2ce5402f36dec428dbde3280ed749f1b1dc59e02b351f6ad2d88bb945580. Chain 2 (Bitcoin): anchored in block 958041 (2026-07-14T18:13:17Z), 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/NLQ8D1800151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7351dd241fdc896a9d6b28ade038eba07800602c6e8533367ed928bebc84b07e. 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/NLQ8D1700506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc00f5e561d58a43d7db166f40f8e26816f6ee7974546abefa425f26f9a6cfcfb. 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/NLQ8D1800111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8168d92c7bdc32b9852f3851c4f9060a1e74d302c3476d4d4c632e27b0617128. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/NLQ8D2102000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8fb2ce5402f36dec428dbde3280ed749f1b1dc59e02b351f6ad2d88bb945580. 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/NLQ8D1800151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58d051afa62dee7663d08247c869ab2d3a0ee2e8d0faeff5e34d001d22beb5e9. Chain 2 (Bitcoin): anchored in block 960314 (2026-07-30T21:00:46Z), 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/NLQ8D2100229.
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
Revealed Selected 069 (KAAZE Progressive House Special)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cfc29709f9a07a2354ca59ed07c485556ba5555a11d85e2719152de12b15d16. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/NLQ8D2200835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7152b7eb84b1011b16013bc72e8d7ec3f9efd0168a86c347b62f995a3f30f84e. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/NLQ8D1800121.