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 0xeb262b7ed9944a1c7eab5886616bf51882c082ddb30ab6f31dbe2217c20e6c17. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b014c2dc-23e0-4b84-899e-ffaa45f3de6d.json and https://artists.proofprofile.net/proofs/artist/b014c2dc-23e0-4b84-899e-ffaa45f3de6d.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 0x66f0303bec422a4a724c8fcf0820bf369eb9ce840eaace085976310ea37fda68. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/SMRUS0074869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x240062d17aa773787a0203b615ae4b27987540ffbf09c58d4330eda785da04be. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/AEA0D1806137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6661b09463c8d675c2b38743f43fef331e12a01b00f61920fa96d1c15daa760d. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:28:33Z), 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/FR59R1894005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f4a7f9d21b722ef9d259d2a5f0e381f9963b7007d722f400f1b3e2592486b63. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/SMRUS0074868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70321ebee59451ddafa814a12732fd1693d9cf7319c47e4c802df78fd2d676d8. Chain 2 (Bitcoin): anchored in block 958733 (2026-07-19T12:51:21Z), 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/FR2X41982441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd4026808f737649bb9efb85f22783e12c8a83ea56fa4b2e692bf5fcf7c3c508. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/FR2X41982442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9d9caed4c822af6786deb5173f6330ffb626ac82f358082b2e362a50b00f591. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-21T23:41:40Z), 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/FR2X41982443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a493ffe54976b41000e70d9735edbfc1601e059ddce1ff02db20041004d27c4. 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/FR2X41982446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39e343d18f7b419445293a8449cbde0545c5562dffb5cf821cc985ffdc23d7ad. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T21:32:29Z), 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/FR59R1980517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69f690c970cca2cb05a5fa6ab53bc0be8ab7aded57243b1ed8a4fbb2f5a3a53b. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/SMRUS0062126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6712e78c0e599101bfd1efe8b57b3f116d80bb2884233ad5d9ca934ffc765280. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/SMRUS0063185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78d0fe26983698d9985d71868c562c5dd507d61cf915985d1f79de33490059ad. 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/SMRUS0066166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71e95e985a87c294b5c5eeabb28bfd392e66de03f1921765a0c628500c7b8859. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/RUA1D2111406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b3a4861f7cd2eaeee0158c20f30c1164671ca7b53fd92abd1b5eb82ac9a00db. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/RUA1D2112381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd609b3aa73b068dfd6d28d1a3e9a07773f276b89dee5c888f7eb148148b4c6a. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/RUA1D2112379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75122a061ba65f08c68e2f67eee622763c53851fd10b530a52214b83e781f33a. 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/RUA1D2112383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65e56d879ee253be35de92aadb75a245a6c4394c70473d4484831661f7c987ec. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T09:42:02Z), 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/RUA1D2121000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04a8e046aeffba4e6d9c8877f2451f0c87c7a0daefa26683ef304d8e4dbe9c5b. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/SMRUS0072230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32593a0390a7829f690d46d0786bd38d3764f09440a09d37beaf36b23e324745. Chain 2 (Bitcoin): anchored in block 956748 (2026-07-05T05:55:59Z), 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/RUA1D2300008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3fc3b71796168f61ea3159afdee049d7e3a97140ae0b3df9046d15d680e6f24. 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/RUA1D2300014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x659b9a19664c4c915d7136b702b1ce947306066d4ad5812e5f9149aeae6f5f51. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/RUA1D2300019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07eb476ee4d30a58ba6eed47122437a1a2248f7ad998858bfcd06724a3de890c. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/RUA1D2313609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8127f6de88db61adf5e3f92778a97f24e54c3df5da088b778774aa7744531a57. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/SMRUS0076367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f8a359f1d7eab834126c3436352fc73cfb9fbcf993851d13963c929c3315d93. 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/SMRUS0077050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd67c415cb3b3424c777f7a01a895b66c4d7214deca0ad6a564fbcb1e020a28b5. 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/SMRUS0077265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe138ef45f0558fed2ca2aad861659a2c5232b1353aa7f7b13dc74f664b9b0bfe. Chain 2 (Bitcoin): anchored in block 957867 (2026-07-13T14:55:20Z), 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/SMRUS0078179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6051956dac1d49e180dff2041a59f02d7fd690ee66ab3e3352b00ed7a3bc2406. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/RUAH62423494.