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 0x612ca4c97899f54dead9b870ea09924eedffbba638a48c4038ae400a4a2a7628. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c9aec60e-0435-47d6-a643-658b1b867922.json and https://artists.proofprofile.net/proofs/artist/c9aec60e-0435-47d6-a643-658b1b867922.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 0xe7316590666f2f6a372d701d71e969ecc07d8a6b52aed1cacd94a8fa7a2de2cb. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZTAT2292784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x438936e205a2dab52d7113742bf76dd771446c8c2488bd01ffb41a6c3e8b47d7. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:10:59Z), 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/QZTAT2292785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3896c68c7ac81a8f29c82746e86d4bb60447743c2cded45f076b165bb6f1b51. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/QZTAT2292786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7aa6d187a820cc68aa194d12c3d365da50e47bcd77b76c9b5d8b0adc259224a8. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/QZTAT2292787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc28f26cf8e3471cec2a0b366b8ad4e9a28678fd0b6e81aba8dba63baf2fb782. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/QZTAT2292788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9e41a4ec649fe24cec91ae2e964f562d4087f32010b65a8824082897c4331c4. 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/QZTAT2292789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x301182683223ff18e839067ee3d4cf01b75974247f45e16a2aa319b220b2aa31. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/QZHN52493106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebe9715c15caab2295b5e88e13907f11bcff7180a89d17742bbc29be0f300c0f. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:57:46Z), 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/QZTAW2479990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2b0a2c02b129d5608746ddfe08bda2cd891de9c6d260f62628b1491f44dd620. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:24:21Z), 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/QZTAW2479991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3433e8230c09d97bd481f2a5c37826c90a26fb68c2e4353154a6fd712355145c. 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/QZTAW2479992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcaced9f22db96b476159a4a73afc1db5f5debc6c5fc12be97568e70ccc5ce30. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZTAW2479993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57110f9cba04f8bc270d436c0ab4f097a5f2e1673a81da65ebc1b049a8ef11c3. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/QZTAW2479994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd32ad978542b5b2e37aa3270e9e324b267d06834d4dfe69e372cb90e1308a2ba. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/QZTAW2479995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b709f39f4e7a013a6795de135e43c84dafc34c8aa038571b29aee8a14452cb4. 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/QZTAW2479996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91910173c4533b56758d9ec552a799a2a0cc114b12cca466987b8e952409e7df. Chain 2 (Bitcoin): anchored in block 958506 (2026-07-18T06:14:51Z), 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/QZTAW2479997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd826d84b64962b31af5ca71f1bb68f952743b9c06df788aa8477a79702072468. 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/QZTAW2479998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4024a2d4f36f4d94bd624ee6c4adb491741a3ae03bbe6a59d2d0c9de09acde4e. 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/QZTAW2479999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7316590666f2f6a372d701d71e969ecc07d8a6b52aed1cacd94a8fa7a2de2cb. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/QZTAT2292784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x438936e205a2dab52d7113742bf76dd771446c8c2488bd01ffb41a6c3e8b47d7. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:19:51Z), 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/QZTAT2292785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3896c68c7ac81a8f29c82746e86d4bb60447743c2cded45f076b165bb6f1b51. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/QZTAT2292786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7aa6d187a820cc68aa194d12c3d365da50e47bcd77b76c9b5d8b0adc259224a8. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/QZTAT2292787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc28f26cf8e3471cec2a0b366b8ad4e9a28678fd0b6e81aba8dba63baf2fb782. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/QZTAT2292788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9e41a4ec649fe24cec91ae2e964f562d4087f32010b65a8824082897c4331c4. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZTAT2292789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x301182683223ff18e839067ee3d4cf01b75974247f45e16a2aa319b220b2aa31. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/QZHN52493106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x723b4d802435cc0a6df631ea17b3b22eb37754764717c0eafae5ba966dce9a66. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/QZTB52469553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a0d94da849c9f29536d4632db9505172a789b4e5c7d30d57a30bc50f59a51c0. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/QZTB52469554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd96e0610bce1c613aeb2e8df4707911a3552f7487247fc072e0985c0899e2abf. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QZTB52469555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5adef63f8c8e38be5b05186b98da896c25856ef6263ea868f298092be2c7a39a. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:40:33Z), 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/QZTAX2523706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb563c8cf3ad0adf452b4bd54effada07cff781f2618058c4ecc4b48139063603. 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/QZTAX2523707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19a3aa007acaccb516c63b106836a305d5baab34273c15c22df4d9f4373c1583. 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/QZTAX2523709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a32469591ac8551c5962b3020c0ba8748554fa0cb4e6a0519316044b7a5b69b. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:32:51Z), 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/QZTAX2523710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe55f77add987b7539ee502d963d40530e5cb7ad8c8f5b1c5f25f1df3003760a. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZTAX2523711.