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 0x55357afeef89b988e42a9487a19ac42de5df7622379231c680e75ad731fcfe04. 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/872f2d59-1dcf-482f-9640-15e39f31d66f.json and https://artists.proofprofile.net/proofs/artist/872f2d59-1dcf-482f-9640-15e39f31d66f.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 0x0056ff704d2dd7d169cdc14c32bd788c09e3c3e76e02104578117caec53314d7. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/USL4R2485146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4452b83b24390c2366be9f4d40f4d28a017a11e9733f5546dc981f20d4660527. 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/USL4R2485150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25cc15a756c5e2bd06271de929c2dc1cc8f4f211c9363ff21cd84c098104811e. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/USL4R2485154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fd3dd6c2a877b9d24aae125b625ff85e16703a8673e5349919c7c6a1d2aba56. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/USL4R2485156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa86e45420f85ff9a46d5da39968e38b8d8ac523d3ca1857b9253b964f4b0ee1d. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/USL4R2485157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5384c3d95f6733b23949a934d0c4ffb7a1b1d8e1ca76c335dcd4523802114f7e. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/USL4R2485160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb070dbf46b38017ca791c4b6f2b9858dbc932d36797dd1a8e6c1ec5ac5fd00d. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/USL4R2466604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6bdd249e76b5a85a100d6c30c856b0e125cbc814e8d4bd15ac5eb3bac11f5c7. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USL4R2466607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28f8e840292ebd950db4b175b08072980bebf06a8e2244b7b8b2ce5738c43e8c. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/USL4R2466610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c9d9ed18599d02c5c79ebb021c8e5797a02312cd6b0df6cc60ef3845c0c40d3. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/USX9P2469772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f9e1c1eb909200c30296dd843d32fe0f385a396a8e48223200cb9c035045f50. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USX9P2469783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58261fa4307edabbd88e0bddef30893801c077172e4be9427cf52e6aff78459c. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/USX9P2469786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaac6096cd36feecc1e9f16dff9c0275c26c9aab51fd3a843aa95dc335eda0c80. 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/USX9P2469789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dee48aa8bc1d4d54c5204a57979d78f7fed3cf35b7f201e3af02e1848131352. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/USX9P2469781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcec1044712de0c26479fe5f470b82726458891ff7d4260d05c1f84a275244e51. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USCGJ2542597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6270aa07e60e832cb2bc7b6dc003b1d90cc9145e8e5109335d88a91a12375998. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:32:06Z), 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/USCGJ2542598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0ef0123763c1f544e8f85cf44e7aff1e03d48f7ba14367a085a2babd002196d. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/USCGJ2542600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa115d486a5feb34f069a44c7a90180541b5baffc278cca1815ddfa9e910a7e4. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/USCGJ2542601.