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 0x55e108b4ef51eceeac8bc84c8489f50e16f8c93275a94f36266c50581774aafb. 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/249e99db-ffd7-43a8-801f-c04918070173.json and https://artists.proofprofile.net/proofs/artist/249e99db-ffd7-43a8-801f-c04918070173.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 0x6c77f02d40abb3f894a894af9a63e659528dc7ba597186c5848dd1fd766f5640. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/NLUW22201697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ad644f7a166be16399077a7ccaae2e1582b0a3b9c78f61b75da1c574f0478eb. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T14:57:48Z), 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/DK4YA2308901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18949c3711a4d37c852ed4c869725152dac94d32af999bf193bac3159d6adef3. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/NL1ZN2302169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb16fbec4bbcb3799ee4aa49675b8b35db3f5269b34b47029a0661c2dca5cc938. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T13:39:54Z), 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/NLZ542301272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d9b98bdf7d45b18d7b94aec532a3931a590f38dc55091ea44235840fab5589d. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T11:08:35Z), 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/GBKQU2403915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf411433c10dfb972481484f25ae6016b39c8b54655d5494bd972eb499e43a234. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/GBKQU2403918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x835d60775c054582605f5782f53990a1c1d6a223a98a7668ac7a7ad60488ea1a. Chain 2 (Bitcoin): anchored in block 957867 (2026-07-13T14:55:20Z), 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/NLHR22400601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda377849e32310139b55abbe34cd7667294b55672a0b14240ae0171b65ceb749. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/NLHR22400548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x650066cfa2f48352603118c3f3d12c75bd0195dc4a460496da1f529fc5e54784. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/NLHR22400834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd86d1882667e991ec727fae263da4c48b9eebc6369e4afa80a0ceae73d7fee4. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:29:46Z), 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/NLHR22401322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcd6313be40081640985ab8621aa9f78346fde8da912f75074b730496042cd4e. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/NLHR22401325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x352111c30d216f83c923183d43e7847ad4d25915263da9f478156366cc213ea4. 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/GBPQS2400160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x009e3b5b050ede7df751b0f50cecc82cf6874c7574cac3965ab87a2e094d0c18. 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/NLUW22201519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26c64fd3cc87c17722b02ad3cca7e0d235698ef11b364f34e4c8d4192948f9c3. 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/NLUW22201521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5575ff9b0801713744c432d9e4f61ee96b51b9664a50bf8b8e224e89c3a6027. 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/GBKCF2201084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb36bb34b15717476b3018735a2e6ec96cb176f514cd8b87912206975fa517d1. 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/NLQ8D2000224.
Alive (with Calle Lehmann) - Low Blow Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f6702736ae281d9513fa03e5da53b7a21ab7d69f97cd7db0ee9868e33a0fd9a. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/USUM72213134.
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 0x5fc8b562fdf82459dd2fb00007710d2665223bbbe9e397ae11ec398d0a8f3859. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/NLUW22301998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc076a532e942365530d912872445747efa1fa356e182179df98e87cf710e25ec. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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/GBKCF2201085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9553e02185d799fb7c1862fcc379ffe6bf7e045df22d8b3c4f69809c4b49d057. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/NLUW22001151.