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 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 0x7dd7cf8e20fe8d90a1dcd1f8f5200e0e41e856f87b19c939f8cd1c9e9111ff5a. 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/fdbe6804-38b9-49fe-bfdf-44598e2238b7.json and https://artists.proofprofile.net/proofs/artist/fdbe6804-38b9-49fe-bfdf-44598e2238b7.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 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 0xb0f1d2bb16d7cd9cec245b18713fe3ad34395828ecb9d5ce650d79c6ae7ff4c3. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZFZ72273818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda016466dba06dc9ad1db4a2b69746439f2615d1e78541c2389a68de441581aa. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZES72287813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbba747fed155fe60b9ac4d5a9d7c529c571c49df455512f403a3f24c6a5d5a7. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZES72287814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ca2dff3e73353fe18df520d741175cfb6fb48cb11ce13244f270559dc349ff1. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T19:48:03Z), 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/QZES72287816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3c48305a9b390fc4979c4cb17eb706aaca46c6ae198b90423a59337e1fd9fec. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/QZES72287826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x323fd854d2ef5abaeae583e0ba36c8b58cb5fc6735a0ca479f31f2d3091cb8e1. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZES72287827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5e7ec755a31fca27d9a8c0a53796f22ce29e76a403f954eda35af9f544cc657. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZHN82491289.
KILLSHOT: Summative Breaking Original Soundtrack
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d0525331aa91265c161cff8ec305ff2421bb1984bb7191a3ad3cbc9a64e8922. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/QZFZ72566043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc21fb525bb28df0194d5f783e850bd6ad037ae159d00215f6742d4f0ec84fa72. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/QZFZ72566044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe402357791d66a597495cb81eaa98cb5b0306ec60aba3b96300075e638ef4a44. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/QZFZ72566046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb813953de352a836ba6f526dbd6c8d2c9c88d5fa658d549861b21dc28d1d02c7. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZFZ72566047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a3aec632c0c742e6d4b699cd413498afe2b1dca64444be4f44cb7659dd34363. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/QZFZ72566048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63a9cd06d1815219f60c9513b1d7513e203d21d0b897e00415fea00b53400bc0. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZFZ72566049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x631bef1c4147080dd356379e430e2086cf43a3a02a475ad7b33d8fd9282b4045. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZFZ72566050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc890b3751dcb2b4b595a77ed0e4eb75f36345cdbc48dedf8d291565af02ab46f. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/QZFZ72566051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1003cb0f9f7f83888b21a76676f1297071faaf2dd1d9dd123fffe159483c33c. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZFZ72566052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc722dddade5232dbb4540494b2063f147bc8d85f6d900563494f95a96d9c7306. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/QZFZ72566053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa04ed6ca2ed6634de35b3dcffe5673b3677f6918acdec1ce2a424ce3454e0157. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), 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/QZFZ72566054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb342350648c6d139265a568c902af65f1335c2b46ba04f4e626e07bc5f8b8bce. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZFZ72566055.