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 0xcc337d13726d9a41decda6766be0d9eff9debc66e34b54cf5f2df90193779303. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ee2cf4b0-27c0-4edc-8b02-ed54464ccdb9.json and https://artists.proofprofile.net/proofs/artist/ee2cf4b0-27c0-4edc-8b02-ed54464ccdb9.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 0xe62b1c259cd95f37d8358368526bc19bf3f9d08f3b8115ec2df80223fcdee5f6. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:53:09Z), 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/JPW462471269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1839ad66760c41c445e36e2e62a000525741ce71abe547b7e7541682263e4dc. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/JPW462471270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b1c9aa4bc959449d71b9aa396036c1800b834457bde1d007565d1a504ff784d. 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/JPW462471271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60bcb1c87247b1f6e57bc4ae06500709c70bffeef9fcc66e2c846b9487906aa6. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/JPW462471272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x590b8ddac7a71e9c8df5a3d14f9b784206035a512057a9f91fdd2c65fb1dfdfe. 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/JPW462471273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccfe5a4291a5c2a7b3fba4d619d585ceae062f5055a7151bcd655b11560fa606. 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/JPW462473518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd920428e298544c649544cfe6794b6ea3fd1e0c454e4fc3c1031d1d86f805fa4. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:11:03Z), 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/JPW462473519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26e09fbd276d44380559d4c6aa5c58fec4a2f504541431aa2e37a6c1c2657425. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T02:31:22Z), 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/JPW462473520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cf0b7bafcf57d6f595fc643983c665bcaccf0a295bf3f9416199da8db07ab6d. 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/JPW462473521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x043227339af26e1aca50c6cebf5ceba381f3b6ca1b63a0da70b70f8b52d20466. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T00:09:02Z), 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/JPW462473522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bc0d7106b032b3e7c1f63000ecab6f5270deba383d9835ed7a0dcb3b9712a14. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/JPW462502251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc3706ae3425b4b9f980b6f90d22d18ead9e96c8aa83c322097e87b6f0f7ce04. 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/JPW462502252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c5c24a6a3212b8be2573cc74403a66f17e2e257e332c580c85262d8061fc70f. 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/JPW462502255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e71eff2611ca859e835941098fac01ada6a8f10fa80b3d8e7809107bdbc4621. 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/JPW462536348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x585b700645017cd837219c895722311896d4127d969a22cf35c6d29df5fa7d5f. 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/JPW462536349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x728783076184552e90284674ac7fe9d64d927d7a6fd1c205b6810a53e099d7f8. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:41:17Z), 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/JPW462536351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc68be680d8ae8c93d89fd57952a6ad5c0109323ab29d3f17a74815331f7f3009. 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/JPW462536352.