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 0x6f20fc7102ac963cc8bca7fdb856f7c7868fdd48e575f885070daf68350b2bee. 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/0abfe2b9-2528-4d3e-aaa1-14c44f6079f0.json and https://artists.proofprofile.net/proofs/artist/0abfe2b9-2528-4d3e-aaa1-14c44f6079f0.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 0xe8be493667ff4246305e254d8e89123bc47d43b3e8b3bd92ee5b30a585f1c807. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/UYM121805603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf953aa1b18a3b78ea082e476d114602c0618f771ec5e6925d832581dc794e5e0. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/UYM121805606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe2469bf8f92380b5c931be5ebb6759c2d310a73e6ddbe04db2e32edf969013c. 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/UYM121805607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4baafa00bbca9729dbf1c17ac7b95e384bfff201f530ba35748c3afbb13fd8f. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T04:59:09Z), 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/UYM121805608.
Milongas (Extrato de Extremoduro y Quemando Tus Recuerdos)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4272d233c749bad097da25b5af548cc7b4b4be6e987ef3155fec669f01fdc9a9. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/UYM121805609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ceb766218c4e262b742c089ca8a61bd1d3133c60f8163deba00eea2d4c49392. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/UYM121805610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79b17195789db6bf2942efe466c45773ca8db2c88452d743b36844273a1995bd. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/UYM121805645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4e7efdcc76e9cd2a4ad9b66e001473a8f452a9684d61cfb73a5c2239a0f739a. 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/UYM121805648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38ba896b7138d6e42cfae1bdaede718a6df7a4723e290a910a36e36013b30c76. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/UYM121805651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5d3328dee081acbfd26ace604c6f4a04739cb92ca33f69923da37d090a77d70. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/UYM121805653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f0d3f390e89d73c4d768a116eb656f9c8c1b1226506f4b598fc3622a7aa92ad. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:07:42Z), 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/UYM121805655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05ee0cb85697a7a32d8711c9c3030073d278370c990a72446d9862d4621f6cef. Chain 2 (Bitcoin): anchored in block 956620 (2026-07-04T07:11:13Z), 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/UYM122002926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e88a305a96aec1efa0122b9fabfdb3b3545c3a1f72705f6847950aaaebe4b89. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/UYM122002929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d16e14b1f8b7fb036d75afeb8b71214b9603ddb37d87daba0c22be1735b318f. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/UYM122002930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5260aa42a6b338e5eb7d078eb25182c0d550ee092172f8952a2d63df923aacbb. Chain 2 (Bitcoin): anchored in block 958368 (2026-07-17T05:03:25Z), 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/UYM122002932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9930f3f6269783fe3480377db5ac5c7f1a21401556c6b900745a2023d98225e2. 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/UYM122002933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ce78f9b68971e92383d993d732c92fd987e769df26b666e8fd22fe0b7084df8. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/UYM122004134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x010a53dca9deb653b8ac78a88ca2034361451c814166f79fa91155eeffe73e33. Chain 2 (Bitcoin): anchored in block 958731 (2026-07-19T12:35:36Z), 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/UYM122400962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa48382e399d2f6636b2dd609f97ea958e7bee518ef461126f18ebaeed28797d8. 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/UYM122401818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2a9003655556b2a38689bca3d7d51d641e9bbb8c3c04f9d8e0635b2062623a2. 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/UYM122401974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8a3de6bbc3763e268966c490e86a50dd8124a7d023fdd064c47ecc78ba4cb5b. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/UYM122401975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0382efc8e126185690188077ea71978003ce3a953a3457fc085dc8dfa66f87f. 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/UYM122500089.
Sesiones Pegaso - Milongas Extremas (En Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad82aad2cc3c671097d45c1e5664552e8a48534479658b9dd656744629d4583e. Chain 2 (Bitcoin): anchored in block 958197 (2026-07-15T23:32:43Z), 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/UYM122501220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe7223541e857d4844b3a6455e26cea9a7b73fa98ca171a886e5615281f3e97d. 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/UYM123002002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8875d247974d0c9ae7c023f8b57bea06f8ed16ec09f7fd08827ab3625086ab8e. 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/UYB262300213.
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