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 0x46c27f9d0bbd3979e23e181c909fe78292df4548d61fa3276de30bd9d2852107. 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/072a407a-74b4-48d3-b97c-df1e6aac1581.json and https://artists.proofprofile.net/proofs/artist/072a407a-74b4-48d3-b97c-df1e6aac1581.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 0x3a1748b8f91b239fba059337898df0b9d6a67900532cc3a5dda498bae9df4739. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBWUL2169108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d3aa66a62010995adaab479e175d5b6b3fdf3743852bd795e37eaa7a578a0fa. 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/QM4TW2599448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc96054f40a200caad790c3c7b3b80efb0f6eadabc892a15884f50b63546d927f. 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/TCAIV2464357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc45a2f46b3d8400e023cc144c02b46eba3772ee4483a9bfeaa80e58d1cf8b6c. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZK6J2062203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7272f737afec360ea6171d4e4bbef268c0ca9ce2416ab308f179b8c30c49044. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QM4TW2244758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a1748b8f91b239fba059337898df0b9d6a67900532cc3a5dda498bae9df4739. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBWUL2169108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x399035c3880aa7ba4998ed45d9492509eb2b48addf75b15b06cb010cae61ae7a. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBRKQ2117313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01c9c2ff47bb2d8389d8688b6fcf3f5359f641bd50971f0fbfcf4b1f0dba3fed. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBRKQ2030181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c7f149c1797af76854c323c4a9141ccd4c3ce1d9141220c6984cc5808d72d69. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QM4TX2291821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9de3b943f0dc75ccb877d811b743415a1196ecc97e6617b265491bde4935d9ee. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QM4TX2291816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66e1247b4b31b664f6c6975fb3c9a5e393edf0ea5ffdbba6405ab5f846afe611. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QM4TX2291813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeda8b7585235179992b75354d0615164433467aad13aba74125e281b5458ee77. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QM4TX2291817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x816c6403e7a8aed0c4b2ee17b46b649fe8304a7c55dd8803568db52ab957ca16. 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/QMDA62249529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6748efdeea26a03f505e7cb0aa0d74510c2eee8cf3676cdec1733a6d221d6fbc. 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/QM4TW2357310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9eb49e0159ac2b722c52511f913b5d38ca176fab3f2b894682a41cfd5f62b5e. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QM6MZ2304720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7987bac93899f9e76f332bd228aa5a77b927e9ec4c8646ee3d1ca519f08288d3. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QM6MZ2304721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4981b266734dac598a2413b25a924e69ec6bb0a66fbbbe0a9b82bcf3f20ae6fa. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QM6MZ2304724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc45a2f46b3d8400e023cc144c02b46eba3772ee4483a9bfeaa80e58d1cf8b6c. 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/QZK6J2062203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bb840b50d3df8c43ccf444803d1b45747ff373d42409e185c01799394bba8b3. 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/USLZJ2140777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7272f737afec360ea6171d4e4bbef268c0ca9ce2416ab308f179b8c30c49044. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QM4TW2244758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a1748b8f91b239fba059337898df0b9d6a67900532cc3a5dda498bae9df4739. 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/GBWUL2169108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x399035c3880aa7ba4998ed45d9492509eb2b48addf75b15b06cb010cae61ae7a. 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/GBRKQ2117313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01c9c2ff47bb2d8389d8688b6fcf3f5359f641bd50971f0fbfcf4b1f0dba3fed. 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/GBRKQ2030181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c7f149c1797af76854c323c4a9141ccd4c3ce1d9141220c6984cc5808d72d69. 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/QM4TX2291821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9de3b943f0dc75ccb877d811b743415a1196ecc97e6617b265491bde4935d9ee. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/QM4TX2291816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66e1247b4b31b664f6c6975fb3c9a5e393edf0ea5ffdbba6405ab5f846afe611. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QM4TX2291813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeda8b7585235179992b75354d0615164433467aad13aba74125e281b5458ee77. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/QM4TX2291817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40bde19d620c721525cfdeea2b2eba06dcca67c54b6d5a9d460fd80876ea0e76. 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/QM6MZ2541761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf66ba96e6accedbff4fec4dc46585354e206f308a1c2023149b8e6cafd4dc37. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QM7282533789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33b2d36d267da4441e3830666028d738cb741f3c63d8e33dcdf8255abbb876dd. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QM6MZ2541755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77e5882722bcb82068d10ec84cb95ab9e3cacf30195eefe31e764fae6c65e102. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QM6MZ2515032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0252684e902664195aa673ad9ed67f9a1dac752ec0c3e037e106da0ef34dd7c1. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QMFME2485422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5da99639a5fa8ff4125fdf48dc769599a420be62f6750d3c1eb0f03cd88e54ff. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QM7282408576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77215b258d24dc0e9a21a608fa7e2fb17a2c64e002899de0244648efb9295d71. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QM6P42406733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e7776e802c1e7c31f835c277e52cc53c523d05fe00a48f2daf475fa4c804cf3. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QM6MZ2401283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x816c6403e7a8aed0c4b2ee17b46b649fe8304a7c55dd8803568db52ab957ca16. 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/QMDA62249529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7272f737afec360ea6171d4e4bbef268c0ca9ce2416ab308f179b8c30c49044. 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/QM4TW2244758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x399035c3880aa7ba4998ed45d9492509eb2b48addf75b15b06cb010cae61ae7a. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBRKQ2117313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bb840b50d3df8c43ccf444803d1b45747ff373d42409e185c01799394bba8b3. 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/USLZJ2140777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01c9c2ff47bb2d8389d8688b6fcf3f5359f641bd50971f0fbfcf4b1f0dba3fed. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/GBRKQ2030181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21bb036dc781dea55f3911e57deab036e86754b42344f4faa5726f3dc8c285d1. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZHNC2360545.