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 0x8560b4ccd1f85cb9005eea1e5efbf5c06dd941c3927ec16d176c9582c77d4b3d. 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/5058dc4a-a100-48d4-b6a7-0ea3bef2e8dd.json and https://artists.proofprofile.net/proofs/artist/5058dc4a-a100-48d4-b6a7-0ea3bef2e8dd.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Turn the Tide (Ruben de Ronde Remix / Radio Edit)
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 0xc684be9f48b4146dabcba058eed00d465bb11bb81c262d1ab3911e6e825082e2. 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/US43C1630144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74135bff1685bf6951ab71532b119bafd3a6d6a169df03ea14f9d051e2f3b147. 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/US43C1629874.
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 0x437d98c401b7e36439b346348f2612838ba6bb0be129582a254bb0f7ac56295a. 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/US43C1629610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b0db8a5343897fe729e1224f58468121c0e02cbb35abb2518271b39dd1bf95a. 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/US43C1631035.
The Lost Crown (Original Music for Prince of Persia)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b5b5cb7982939ac055abc0a5a33573afa46ffa88938c61cb6ecd3c988d5e3f1. 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/CA2BN2303297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x372bcd08dcdee5cc2eb75f59f81a87e688ad73768440239abf3511a86f3ada4d. 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/CA2BN2303298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9092ff46caa890b944a39742106df971ea23cad45919635c79894cd816cdc8f. 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/US43C1628168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7e008f5a35b1b27c33f471d2a4c7a0c4bbe08bdcdcf2b938a74dd35e2682866. 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/US43C1626120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84e6c6aef4b5f0b7c170d5641b571dbef6a57afacc96fd1c7c34de393e2f1e1e. 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/US43C1625474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f436b32756383f0593c3b157ba9e62772aa5c4b943797b524c16165855ab447. 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/US43C1621293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74cd7d16da891965e1bdc58f7045764bc11468191e43f55cd90e7fda2e9bb3a8. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-16T13:49:24Z), 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/US43C1617685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0862fc29cf43d9b8ad87314205d5ababd18f715b36074180745af0581134b8f3. 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/QZHNC1918248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x410a07eb00b364ad59c5f3cbef51a5da24c81402edf8bdb5f582d5ce82831bf1. 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/SE6HN2454284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1567658f32ef9affa614b00a4dfd991634aaa86d11adda1e819f134480a735b. 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/US43C1631592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25959da9ca626bddf0d8e482f60b243b653974e4829376e7a75e0388e127203b. 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/DGA0Q2398477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81f6c9528908cf02d3dd0bacc23772c4cf36bbd28509ce79f24c0de853e03e6f. 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/US43C1627688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b269430b851620aa15d5720cce08d55976a1cd19349994c8ffd798a5e0c9b4e. 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/QZFZ42375032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd15dedb74e2a391534ef8c85965e37f0196f59b0a23fd0f13675f7a8fdcd4d8f. 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/FRX762190466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe062cde3299155c4324eed9d101f905db6dd17843700afc85932c3ff3b7e773f. 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/US43C1620088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75294c850f87f250e6f307a8aa87b7cf138a564c6d77b26c429ea6f7135f7d76. 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/US43C1618187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9d518a442b4feec5483ed5df1042ca816e1b782cca923f550cf3d902b1a1b72. 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/US43C1618179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54ccd828f3997c5f36b2c13026f461ac5062515090e0dc662162e0a0eace6102. 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/US43C1617931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a4277846252f22dbeff5e873804359c30c6abd588c9bcb62f83428e687f7d1b. 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/US43C1618181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2a1546b1078cd923355118126877965713c3b67f3231f249c3ce17773f2d7b5. 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/US43C1618183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6e23ba122c635091a1ad36209170cbb83bd84d606f745deed273859d6f170bb. 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/US43C1618185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd47b5d2b88fe0fd72994fb2bd753c71df2f941dbe04ba5002458197a1e936876. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZK6L2597991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33749abeee0c6ddbda56a42bad210e1ca8a803ca8661a0f5cdce6a4730590c0a. 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/QZNWQ2571362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5296f9d11f9369f8de485c00692fa1c64cdc00b80f761014738dc0f4dce330f. 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/USA2P2509647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a531e1e6dc7aaf2f059bf4d93dcd6d01190cc9287beb94bb75e1f8eb82cf8b3. 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/USA2P2464632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ff23c86126ffd81f7218948c9190e5b48b8ebbe40b5af7c61094fb05c2eac38. 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/QZFZ72145368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11d685909c8bd5155970fb2bef9e42a5893f18b86217808c38febc28929c3dd7. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZFZ62153996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69b047e4cee8efd7ba3a8bf692f56ffbbdea6a7140325b509a01dcc31211f350. 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/QZFZ62153998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x560529de6377f7e746298ca113524e1c0c10e151620c74bc3c63d0d320f2c3f7. 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/QZFZ62153997.