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 0x3a0b35c592a603766cdba63610d058c3346668debd8ca659b6f63417f10305d5. Chain 2 (Bitcoin): anchored in block 953786 (2026-06-15T12:56:12Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/dac15644-4935-416e-80fd-97c0167fd612.json and https://artists.proofprofile.net/proofs/artist/dac15644-4935-416e-80fd-97c0167fd612.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 0xf5c207713eaff51d28d9dc30866e115e7364e4e90b6917da54322293c673ae1c. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/KSA012339041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7a4f5b0530fed21060ff463abe8ac1e8267e51167e22cdcf8f1b9c57bbd04bc. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T23:19:41Z), 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/KSA012339044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b51b1d3e04e5c3a05024eb82eb43656bc0dec53475afc18ff78cbfe5c4fbee7. 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/KSA012339047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97c6eb82814c13aa418b1e59595ba6e5dca2ba487c834643ae6227a6dd84c8b6. 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/KSA012341950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03432b1d4f2d0ff918053a59a302645e5f959b5efe1451b6ec98264033f7ca70. 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/KSA012341953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72e08804bdeeb306fede0542be562e3110fd9ea006f87799446aa99270e13336. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T09:04:56Z), 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/KSA012341954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b5d9fb4b6e49c5fde9bc6ca68a8a0414c82a8ccb0844aad3ad1ee396d2e6e06. 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/KSA012341955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bffc94fbd1efcc9e4749a44e2c0f9bf5ee22656e5957bcce247f327aaf7d609. 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/KSA012343739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57e52d4410b4139e12b00ef851dccd2592ebaae2504b629d04de2449eccb2b92. 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/KSA012343741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53ef4d17f460a8ee9d76fc11f3f71daf4bd18acd3592f1a57438509ae94c2f74. 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/KSA012343742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8745119a83bacf4bc3623a00d8b3b013ca84677d10f8af8776e1a07e7eaf4c26. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-22T00:01:29Z), 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/KSA012343743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e3e9784eaeb39a21759fd995934324c3351961dfd97e99a5cba8451a6432dea. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T13:51:51Z), 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/KSA012343745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94f57c7edc2f419b9ae1a31824a855eb69a236144d7c5a8a98e7f9baeb1e8342. Chain 2 (Bitcoin): anchored in block 959052 (2026-07-21T22:43:43Z), 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/KSA012343747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb9d197db707c514c30985b8c017f2e1805d8363fc12608a0295cfd3a87b7f3f. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/KSA012343748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e5118c817f9cd211218733f3e55b2ba7d142bf49c52a6d8028cee60ebabba81. 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/KSA012369996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35c52961ad8153673878fa0d7813f8822b20fac884d4045caf55e8e137abd91b. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T08:23:05Z), 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/KSA012369998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45308f1f391a04587f595699c23cf454b127a2d3554e3924650f9031625e30eb. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/KSA012369999.