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 0xf17974aa1ce274db7bc79087887649c81b10d564be0c86bf5f82398479efdc25. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/57d44523-ffcf-4f54-8ba4-9151cf3693fd.json and https://artists.proofprofile.net/proofs/artist/57d44523-ffcf-4f54-8ba4-9151cf3693fd.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 0xc872b5ae245d10627990675bb9f53b146d39e2251d12b87b8fc82468410d367d. 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/USCGH1984015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x351bebc570f301bfa35df331ff9709357e6e4a5bbe3189187822976b135a2e2a. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/USCGH1998026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfcb538fafabb27f56de5eeaebb9e22877c2625a51cd4365d976a9b6c57cdf5b. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T02:19:06Z), 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/USCGH1998027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9ef382600b2409d10783f493e42593bcc101250af23270f12d405f2f9c61ed9. 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/USANG1910136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66d7493c41e3c119d263d338fd139fd24fd884b6fa19a1838b9736c8d008db73. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/USANG2190610.
Depósito el Penco (Desde Guadalajara, Jalisco)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48c49b1c24d932e12f05768b8a384cbe791b57be03015d8ceaa109d5ede201d2. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/MXH152100176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf807b5228f09081106538d3862c1a63e3127f9e4ff37398622cdd3262b24f234. 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/MXH152100187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbc210d88869ced556d6a055e4f927883125f4e8e0b8709f6b44e35fb7bef493. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/MXH152100195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8acd2942a496afab7a566983aef44070de0afe69fc9270fb1fed224184a22138. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/MXH152100196.
Popurrí: Cuanto Me Gusta Este Rancho / Amor a la Ligera / Que Se Te Quite Ese Orgullo / Y por Esa Calle Vive / Se Va Muriendo Mi Alma
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a61530e176363c6bf5c0259553c5c20abb312a2bc7b8720a07732bd040c356f. 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/MXH152100203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91c90c7afc3a79dd1941727017b16be37c0b7b53eaec34e364a2afdadbe9ce15. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/MXH152100188.
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 0x53e6f0b5ecb02c2ee51269dbe89e8c16ff6d995a398e46c47e4eb047c02b5a6d. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/MXH152100194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x889ffc777bb5c4762e247f8f8690561c7f39db832348064b865e9955d5da3aef. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/MXH152100198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86f237b6933d0973f267ba8cb5b7c0e2836415ecd280dbade29444c96bdd7fff. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/MXH152100205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40094acaebfcc48616adcdc18c48203e4afb515d47c6d94eaf904d3e3efe375b. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/MXH152100209.