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 0x28a9a782c0e5eea8f0777ddfc775953e7b65e70606bbeb0a886aa94749384bee. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0df152fd-bfe9-4007-9df3-a7f50a33533e.json and https://artists.proofprofile.net/proofs/artist/0df152fd-bfe9-4007-9df3-a7f50a33533e.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 0x1cc0a535178d4994a84e777bf75032e6935f1cdc82afd4e525d63cea9a63441f. 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/QMFME2063532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e3c95e54793ce475035ecbd98d344dd2ba4acd136cfc222d83a6451c50aa37c. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QMFME2063538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25db185afd7c8eae5c7f8c2068ca52ff8ae2ed66b95d814ac506c3373b5841b2. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:49:38Z), 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/TCAJE2519137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa56d918ef44604bff7f0c416b71e01deae706a28194ce2c7f82c0f1a462ba887. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:16:08Z), 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/TCAJE2519155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb0f06efa89544fbc0d72f1b09118461fd528e15029f694fce7c598e759a909d. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/TCAJE2519165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea13f505dd94b15ffe77b9b79aedc99b1df4b331151bb9fea526f5437112da45. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:10:32Z), 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/TCAJE2519227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5de33538cc0c5413bf4208abeee65dfa345b3186d7bae67c600543f7d05535b. 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/TCAJE2519236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xceaca95cd96eaa7716865b4a5587559f3d6ac6036df11cab0a2088cdc18d4cae. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:42:51Z), 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/QM6N22135545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x839a9cd87f42b85f82fb26a547b4112a54d123b722fb37d445a421d8c0f82494. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/QM6N22135546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe878656f18db01051f40ee33573fd234597c215e0a416a87eb2ffd8973adb9bc. 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/QM4TX2336053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85637bac04fbd586a55e83ba9f3afdc062292082e6de696d0c6c5109edcb8297. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QM4TX2336054.
Tiempo Muerto (En vivo @elteatrito 30/12/22)