1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x6186c174f9a9363c891ee080e695355adbb7b78ceab2c02c0795d0a84f8cdc8b. 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/3bcaf029-24f4-4d3f-9ea7-9403cc7a5a7c.json and https://artists.proofprofile.net/proofs/artist/3bcaf029-24f4-4d3f-9ea7-9403cc7a5a7c.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 → block OTSBitcoinBlock must exist at that height 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 0xfb3e830c6796cad07403b6335ca475902bff99e51cfd6a10408bc62c87b9f418. 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/RUA1D2142542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0046515ea6bfaa241a1d3a0557cb2f560b2785f627cdbae3283ec0aeabc617b3. 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/RUA1D2142545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ca2f7474acb02f12efb55931ee94245bdd5bd8b8ef4f0b249cd3611b7286864. 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/RUA1D2142546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a9f711de2438dd66f802a4fce48448a6c8d995d32e6ba522c8cc0f24987155b. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/RUA1D2142547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf1f9b6251b73ede57e02685c19e020a34056e86927e5b07456588e794e82e5b. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/RUA1D2142548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe42e91ce3a4bc50a928ddca011a5182b485cd1d89863584dadc0e6a89775ba06. 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/RUA1D1818489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b7916b89b548ff6c51b93805d6f5b738644811f22b6f4a126d68b11b7c2f26d. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/RUA1D1818492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad82a098f4a459a03aa1e8d597aebdcf8e382153b5ed04dc330c7dbfba2731f0. 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/RUA1D1818479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bfbec8107247a97cc97b722e399885db89642921a01ac3429706db508e08a72. 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/RUA1D1818487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74fa6592e18f2e2fa4378080f3bed3584ddfc93a280bccde8de65ba3ebd8944d. 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/RUB422403573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x015974301437f185db4cfb61484445970ff6b77af6e588489d6b87e50385b3fb. 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/RUAGT2458649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebb3a282cb1d77d17e5b06d568cea4d467c0dd6502a12f0ff64e94d6c007b930. 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/DGA0L2419256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3df5968e3c5782cfd0717670cd763492362c3d786d90de3af70b939bcf0a14eb. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/RUAGT2438303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33252b2a7148a823cf5d0c46dc9a3bd6f2524576012ab49cbccc1a6cc9e9d32e. 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/RUAGT2417162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ca01458ae727b63905974b49ace362bd66c7029ccf9c3905b49baaf126eb109. 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/QZGLS2501906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x824dbb0892a4d8b52d21119ef1512765d65d96c9a5b6f382b1ac22b1bb4bce70. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/US7VG2563855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2be0799eed8be7bf83c427942482d00d03630c012d0407c49332da2dba4376e1. 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/RUA1D2516356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x242060caa961fbba54b6d92b0b64d280a53ed821b0a99392a59246fbc5dbb7bc. 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/RUA1D2503133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c2050ef8e0c946221191c4f928f81338bb1e50f46b3ae322813cfa895ebc38f. 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/UKEX32503012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33fe7990e76727405ab16b4337d3a514f23727a7c11cb38c7ebedf97b06ea8dd. 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/FR10S2100405.