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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd87213dbe3310bf779772646dc231bfdf17fad93c1f04feb91555436aeb76a74. 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/2d4bee18-308a-44a4-9e69-0037bd078c86.json and https://artists.proofprofile.net/proofs/artist/2d4bee18-308a-44a4-9e69-0037bd078c86.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Heartical & BDF Present : Books of Slaving, Pt. 1 & Pt. 2
Heartical & BDF present : Real Rock Showcase
Heartical & BDF present : Dub Fire Showcase
Heartical & BDF present : Fade Away Showcase
Heartical & BDF Present : Tonight Showcase
Heartical & BDF present : Far East Showcase
Heartical & BDF Present : The Know Myself Chronicles
Heartical & BDF Present : Freedom Rockers
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80818f7771af957578c7213a79d4c8cb26ddd9306b33e505b13e66acfb307abd. Chain 2 (Bitcoin): anchored in block 958720 (2026-07-19T10:53:46Z), 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/DEZ651360243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x890b64ca60f2eb9d24e08302872a529d17a7cd2ac76a47361403bf0eef80e873. 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/DEZ651714012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9a26a7641665c5c48af7749b847311bfe12a8a05948d781f71860279a36d801. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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/DEZ651714013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x477c8cb287a4372fa6aadc4f375dbcadbbc6eb695f615f6ff8b2948b697b2b7e. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/DEZ651714017.
Heartical & Bdf Present Ballistic Affair (Hugo's Delight)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x197d129f0e437139ff893a98ee9e76545a3f93c1f3537191ff83cfd4f1b4353f. 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/QM6MZ1961796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cd9b097062839f9f4acbe6f26215d511e19a2bdad19a6827c27e3cea32a8eb7. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T21:09:36Z), 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/QM6MZ1961852.
Heartical & Bdf Present: Universal Tribulation
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b91ab85dc2ada637c944aa4275928a8a2d122006acfeb8bd1cdb3699fdaa770. 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/QMBZ92061851.
Heartical & BDF present Walls Of Jerusalem (Tribute to Yabby You)
Heartical & BDF present I'm A Revolutionist
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9e7dd4b3d4811dc4c6c3f89219a2c0c3991c7ac8d42c0c1f63a51b01384f9b9. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QM6MZ2585660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x021cc7d643bac00df97a598834b2f13f7b7f590da11fc0ba5df8a27cbd267264. Chain 2 (Bitcoin): anchored in block 957779 (2026-07-13T00:19:08Z), 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/QM6MZ2574059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb69d57fdd40e480d01ed539c6465ad7f17ca95c3165e89e835c9b523bd7e910. 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/QM6MZ2574047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf30bd60afca6deebe471a0b84065bdf5c97284b033f6c8f1063c2c3bd2be8470. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QM6MZ2585681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9fcc07edd2da2bd9d80c05a67fae6d29b28be58322aed43adc9a019c7c0f2f3. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/QM6MZ2585745.