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 0x8d8d2181f5dec0e2a1b5979e649a76b6fb53f0bbec3eff08721a294f3f095b78. 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/93238a3c-9e7c-48b6-8486-c70c84a39fa4.json and https://artists.proofprofile.net/proofs/artist/93238a3c-9e7c-48b6-8486-c70c84a39fa4.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 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 0xd6af1c2446d7d3965b12e48f58a65ace988713c6a9c470995292e6083cf77065. 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/FXQ892300312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x055f35af50d55e24998873d5a57182ab2e54bdece139432dcb2af76d0e7ac232. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBLDX2300082.
Not That Far To Go (Binaural Acoustic Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x299117737976543e31c8e1497efa7c5566c2e09542c1940cc16d621c2e9c7183. 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/GBLDX2300096.
Safe and Sound (Binaural Acoustic Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x854ad4ad3fb721a64da7a17d9afa2ef537bfbe4706fd4298aa1eb8066fa0f1c1. 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/GBLDX2300103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0683cfdb08e229b1ab6e6ed08cd693e22f75c96838328fe8fe10e88a590797a8. 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/GBLDX2200038.
Comeback Kid (Binaural Acoustic Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x055f35af50d55e24998873d5a57182ab2e54bdece139432dcb2af76d0e7ac232. 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/GBLDX2300082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6a8fe3e4d69f7a8602dac27ed970b9aee1b6b1fbffb4a60ff2c5803bc073909. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBLDX2100015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1190c3c958a2a13eb251b4d5e0c2a0066ce50e5630a3008cc45cc2601bf49338. 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/UKHM88210001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x128808343eacbf5cb1cb64e270bb69bacad2c0478e43dc39bfd07f835a8235e3. 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/UKHM88210002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef111583af6b4faa3122bf20eb4ea1baa374851ca402bf3de669e3b1b86041c5. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/UKHM88210003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ea2d771ec0ed68d37675dd7c4623222d1b17bacd50e4da83daf365f107cc898. 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/UKHM88190039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b6540a98b5c37dbbc7784da739b01596a1148fdaa605998000bd65e24a82226. 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/UKHM88190050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0204b0dc2078c79cd14fd1c9b47b26b4e657b59a6bf0cf1260a736084729be86. 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/UKHM81700011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56d74e80b0baa28b5ca6b533dcd50a9dbc777cf1851471605c39a5250beced56. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/UKHM81900006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61284938a2d91baaa0f88ea3475cd42436e96926a64fbb45bbc7a40217590ca7. 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/UKHM81900003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa341b7f85fb9c6c3f2a6890e5418bbff853c972fb5d77667a3c26204bcde0401. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/UKHM81800006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1223b1eac5b231f3c120303ac6be146d6db14c4c98e7401e5b29b5922da7d913. 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/UKHM81800007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5376b124f19deb2b82b5fa549f89da3a13709af93cdd43102d9e1646d5f1278e. 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/UKHM81700010.