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 0xae8182720818e34157c0b8dcf0287e3fd970e0f919b4878e2b37fb92278570e6. Chain 2 (Bitcoin): anchored in block 953707 (2026-06-14T23:22:21Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7db330e7-4462-4274-bab2-1190f8396961.json and https://artists.proofprofile.net/proofs/artist/7db330e7-4462-4274-bab2-1190f8396961.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 0xb16267c352fca46b28ec5defede42fbb610b2b2d5967c5b0e1b790b6d1584037. 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/KRA252300086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x242f315aed8a71a8f2cc8b3679920c1e811c6fe6c9f3b3562ceea399b2817592. Chain 2 (Bitcoin): anchored in block 957055 (2026-07-07T15:12:44Z), 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/KRA252300087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1b12af071243abc776410ed0f1e6a4be8b9b863e0cfafac71808ed56017d676. 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/KRA252300088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72368c296aeb59420fbd78b8fd3c7de40100f0ef38604af87b8144ac3a33f4df. 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/KRA252300089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b5bfe603000d97eabd9b35300b943777e6440a16b51f963b04a4592b5a7d872. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/KRA252300090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d112e1ae518d0ca9427f6f034c9b3fd157674231e5db8a3f209f371e1b5c945. 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/KRA532400752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8fec5b4da88d8d83cb4fbc3f9980a479a46ee968a100775eacd8d2ec0adabae. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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/KRA382500477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8edf5e26825a9b5769f2b198a77fb28af54a5831cabac3fce35ef97a3731825. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/DECE72303561.
Casting (Feat. Yelloasis, g1nger, Holynn)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcef8e9b3bcd339f143285984415546dbf35edf29f3c4e2ecf438c3e6e2e8f6f. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/KSA002303568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89c3997d062f755f29161ce3d98c38a8fb2b1f9d2f8f561379863a108ec4bb78. 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/KSA002101420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9afa297ffd439bbf07ddce37efbf918a696bee7110e873de024e88db403259e. Chain 2 (Bitcoin): anchored in block 960193 (2026-07-30T02:05:19Z), 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/KRMIM2015742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69c1f21621d86cce807320e06af6b7942fae6ab359260062f67c62d7e11e0847. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/KSA002200243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xded14cdc307f68c69e95b74b669ea2abfc60368a1730189878127a9f8bc92617. 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/KRB472001179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xded14cdc307f68c69e95b74b669ea2abfc60368a1730189878127a9f8bc92617. Chain 2 (Bitcoin): anchored in block 960164 (2026-07-29T23:23:05Z), 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/KRB472001179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f7e47fad131f6ab3d1dab471de5999f6c829fb7d77323108e80645f678aa5c5. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/KSA002303319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7b0a458aef15e139ab4fbff78b11db08d56e3b1f36d9a8fef1937043e799297. 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/QZAPG1776884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x692cf25f23c0c6d407acd17c4c854be4266045d40ad1dc55541e58ef031deaf2. 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/QZK6M1908877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba97422ac20355cee54f8bf0afda33459e923b7d77170c7f6d3684ddb9bf2eef. 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/KRMIM1807684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51c0159a10ce264fcc82974138794c4e84a60ca78174be198da0d505dfa94e9f. 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/KRMIM1807685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5d62b41b7dde403467257db5fea23765191bbb52e5413673325d448f28a4c3b. Chain 2 (Bitcoin): anchored in block 960259 (2026-07-30T12:51:24Z), 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/KRMIM1807687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15b683c4350e1f5817602aee2aff9acbe3fd33f96b06f7b9bc6acc42dfd82f6b. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/KRMIM1809552.