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 0x2c52eeba689fb0dadd3709c324c79d19912e6059aeccf0a9f47829db6e3811a1. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4a2c7e0c-458f-4cc7-ad32-078d3e2bae72.json and https://artists.proofprofile.net/proofs/artist/4a2c7e0c-458f-4cc7-ad32-078d3e2bae72.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Dope, Guns & Fucking In The Streets: 1988-1998 Volume 1-11
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 0x7af7dc5100994512e462e2c580278b1c69131293d05be3b7ba639d9f21b53c1a. 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/USY251525715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dac95b74bdb9b5574fe3c6c1256735bd268f2ff0a2b6f94d4e11358327b53d7. 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/USY251525745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x867b927d70254d47dd6600852fb0e9d924ceadac689b29e642c0dcc49dbf094e. 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/USY251525717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29daeca4b4075df5733c80d5501b8df5f493f17043200094907bdc7de6b83520. Chain 2 (Bitcoin): anchored in block 957039 (2026-07-07T12:58:18Z), 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/USY251525718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe87b5b7b782e094e8b97661e6216082687d15c5531ef5aebe3ae560ddea5a2be. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/USY251525722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd1f4ea9d253a27f0cd52a479fc2d164d82ecfc18c629aba4b9fcd4a3a1cfbe3. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/USY251525723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76d628f99826145b8f1daee5c31e07ee91702e875c05c7380e801444b5ede377. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/USY251525753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcac5ce14ae042fbd0da4087ae4febc8c5f97f1085993cac5794f72406de8a23c. 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/USY251525755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f92beb46f8e7263701254fdcb94f2bbe3e19548c5e22c5a4764b898d8a5481a. 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/USY251525728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa89902f85d89ad41ccf99c2b7a0351d5c73fad84ec9f703fbadd7c919e64481. 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/USY251525730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc28d951fd02ad9e3473e3829501157aef3738956af451d8a593c1040c3a6dc57. 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/USY251525732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91fb718a978d3e30c768312f96f03dc2e4bb26fc310cf4b6bfa737e2e1f0fdf7. 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/USY251525736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7903dd4c88b171ed0e4cdacc1ed11fbe95ad40c0a49d714f354fe972440d9ba6. 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/USY251525740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed3d2ad3df8991b4c2836a3800f4f767cd94acbd99f424072fd510a63564fb17. 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/USY251525743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaf649cc7854c19d2a48564120b79866d834036e5e7d3f4241026867d41ac631. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USY251525744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94e1983f30171bf588bb33deeb00f62c374d678943df266ab5e678dbf226cffb. Chain 2 (Bitcoin): anchored in block 960352 (2026-07-31T05:48:30Z), 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/USY251525752.
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 0xfa24c2dfc5232c8d3dc9b90e5d41b554fe09ca08dd3d66f8903648be83c80857. 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/USY252287605.
Dope Guns & Fucking In The Streets: Vol. 8-11
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd81fc592bd1dbbdcb234a44e9d153464cd534aaa5224404eecbac36139cc9c03. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USA560446639.