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 0x590bc05d46eb9e8be146dbb9221bcbd205037a6ee7b4c9dd38bdf8290e21fdb8. 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/089d4223-ea23-432e-9eae-c4e1b287598d.json and https://artists.proofprofile.net/proofs/artist/089d4223-ea23-432e-9eae-c4e1b287598d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Girls Singing Hallelujah (The Glitz Remix)
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 0x638ec47ac80d9cd63bf78c95fcd4d78211f972d8952af218897dc9c5bdade0c2. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/DEPQ62301355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5640dec78e253d2ecc3cce36515f2e6a57930b4202a517bea4c7237a8846dc4c. 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/DEPQ62301309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa35b6a70dc39552f118d175e209434e54d923fc688c860bb38808dd772826921. 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/DEXO42279857.
Girls Singing Hallelujah (Dole & Kom Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73f335752411bc05e1cb11a3720e5cbbcde8da056e7e4f41d3ff7db39dfa8c05. 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/DEPQ62201221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x386e205225b94ef662f6cfd6541237f8361d4335e4cce65972409e763663c18f. 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/DEPQ62201222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ae55c1e523f07354b7c9d0372fda31c57c8a67508329416042757590486a247. 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/DEPQ62000976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ae55c1e523f07354b7c9d0372fda31c57c8a67508329416042757590486a247. 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/DEPQ62000976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c3aad1a564d974c2f83edf33cd3d53ebfc67df948bb9b37fcd6010f4899c370. 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/DEPI81704670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6a1ca149d53349804c0f4c20183eebee7f8039a9ca4eeb43b50b4add8f79c4a. 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/DEPI81901457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63a3d648595333c4cbb709a9ba20bf591ce9bbe2de16894741eb19784c4c38fc. 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/DEPQ61900781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc278b3f87640270a7d2a0ad1fc1f8000fc096664c1e46acc9d9e614346e3ec0a. 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/DEPQ61700574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb98e01a920fb8fdc0fe61f78f814cbb1d08857f2a0fa86d3cfdd5f8d9c8bb52. 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/DEPQ61700575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf6d520d578f4b661dab4c5536d2de94cbcc7183789e67ced8db7c95a73e1db9. 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/DEY471613712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55e4612a7c992a8b6951724431a9a412532bd4261c0e87d3aad5901c8555f6e4. 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/DEY471613713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x933129bdb7a9c0952d40a01adce94f101962fab3579d4c38a940a23b67389bde. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/DESH41300145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cd1e44ed874246ac1f7a75001b0db798b9b6e75b850ee214de11b93961e94fb. 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/DESH41300147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb32f9f3819a9bc85a60e3567372591d3bc0554cce809a9c57f31687ad64b6af9. 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/DEPQ61300076.