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 0x6b39e6811a7a1b51e37b8918fc16a81f15ce308fb22362f22d499b1f602c907b. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f945d9fc-b53e-402e-880c-1fa02316b348.json and https://artists.proofprofile.net/proofs/artist/f945d9fc-b53e-402e-880c-1fa02316b348.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 0x70cc67a3d912c8390a33dbcbe565d824e00ecf76a921b688520b9a2df519dec4. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/PHS112300420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d1b5d5f815f3f74f9997017dd247efe4080692609919be2cee2ca4ea4b99dcc. 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/PHS112200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee7fde6e0454ec2fbd8c99f7068c6a6d761e6ded94bb2713ad222f336d80d16b. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/PHS112200179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13c035c52731ee06d3bb9eb830b1dbb23c919690ce7ef2fbdc0cc693285d6791. 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/PHS112200145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2204db974d5f5f7061f724b0848173ca27cf43b1141b8cc937edad026c9d8f9. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/PHS112200180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef743dcd9361ba828fb31a2c48aae02e631db3fc61c6e1dffa7228557ed16536. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/PHS112200181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf99770fca6382a17076b2babe457bbb8791b94e7cf1dd280ec85048ebf47286. 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/PHS112200093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13c035c52731ee06d3bb9eb830b1dbb23c919690ce7ef2fbdc0cc693285d6791. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/PHS112200145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf99770fca6382a17076b2babe457bbb8791b94e7cf1dd280ec85048ebf47286. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/PHS112200093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d1b5d5f815f3f74f9997017dd247efe4080692609919be2cee2ca4ea4b99dcc. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/PHS112200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x136d3292fc883a39c3d1c147c6bd877cc32436109d423c5f29aac4351b8b61ac. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/PHS111900091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f872ce8315051763c67a8e2aaca719031a8a79fa570d36a7038487dda3a7b89. 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/PHS111900119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99f8a58d4be6a77e0e2c02d97596282823583714541b0f2cf3f8f6d865cd2e32. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/PHS111900120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e4448b54378645240d862067fdd7bf0044ed18b21115933982d657c3e35bace. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/PHS111900121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x493eb62e83ecdacb09bd212e7ad00ed303f98e1c4f2f1dbf75cda53e3288edbb. 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/PHS111900010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34dbe221a0f7514fb112bb1893a324f48bc60d35875c8f43b74d3a710e31a431. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/PHS111900122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x136d3292fc883a39c3d1c147c6bd877cc32436109d423c5f29aac4351b8b61ac. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/PHS111900091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bbe953e75e6d344a1da0f59a76e9323567463dab679fc17642a3acfd7b271bb. 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/AUBEC1837432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22ad8b77f19d88856dd395e2612024fe4da191a5764f83140dc05a1dd4e57302. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBLFP1853474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x493eb62e83ecdacb09bd212e7ad00ed303f98e1c4f2f1dbf75cda53e3288edbb. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/PHS111900010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7588a716180abaf2a7f5152db0b601860ea9389d0d22544b21de8cd5a60d3377. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/PHS112500275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1dff5f58edae21db84f09eeb1eb7acd88274ed9859172e4c9c040247b127648. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/PHS112500087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b6f8f5e75f44442acd2ee816d43e7c473c9041648e572fa0e31b25fcb7949e3. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/PHS112400796.