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 0xbcd24444ad1e326a82d1b7ef9a02ed623c14a72b3eec9e66bc764c8c1b41defc. 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/0f2f694f-63ce-4cd8-9fd9-190b8830ddf6.json and https://artists.proofprofile.net/proofs/artist/0f2f694f-63ce-4cd8-9fd9-190b8830ddf6.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 0x7a3d6ffa2d922d6b7069787061b8d49615fd3aa9161dfc3c90e3f0ba1a110bfe. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/COF019901766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7595eda4fe5f610fb87b0b8c54cd6a17b4a2da106008e0fdd232f76a5558534. 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/QMBZ91758923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5a98fea7cb07a60567dc42807ebd1d7f4def95df2ca69e5e899adb9dd22913c. 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/QMBZ91758925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb256cb13c73f3c60ccb946282c452ef7242d6f80e2378314507d3f198d6bd9c8. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/QMBZ91758926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27a5c37c224cec9a0c0f2bed55c6bd8e6fdfb28c18da2108db1fc1ffe4230efe. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/COF019800232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x058ed4dcc3d348f37e05bfd4728d925a36cc76059a4c123aec399e5553d61cfb. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:01:33Z), 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/COF019800226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ee58f8a54a5493d5b8c922edd292ca86eeae1e12c279cd5644229bf069dcc99. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-15T23:58:50Z), 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/COF019900733.
La Decisión Vallenata: la Huella de Tu Amor
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96d360f794e3f45c4ec69f36ce28f3bd76144c9c66bfc3beca04731add679466. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/COF010005961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f0c561a4242c4b78e976b7cf9031506a1dccc04638a330812187600e3313c29. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/COF010005960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d2a6ae5eab8573659872c8ee19a5821f0917b515cf0a83ad729a1b20f3eddbf. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/COF010005882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49f2578a88c14242f8e451d276379fef6ee8e82c0fa4d577b8dd5193f126763f. 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/COF010005962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d2e880fced1b4e7ab19ba8186af30e02f28908706d56e5870db93eb6771ad81. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/COF010005881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34d86dab0269484b793dc499320c9f4729df5e3c3485a102d667063adf93d597. Chain 2 (Bitcoin): anchored in block 957763 (2026-07-12T22:01:25Z), 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/COF010005965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8eaeb7f42677e400a530135dbe8c0cb0b237abe1957f7f51fb36a01cb1a3dc4. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/COF010005964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e8db6d1876371fe6466e6e957f805a063dff9e507b141897623a616d87bbee9. Chain 2 (Bitcoin): anchored in block 956862 (2026-07-06T02:10:22Z), 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/COF010005966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1308dff8f7c51205af7ecbffa1f500f736b1880e303725be8296ee4dcf25d8ad. 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/US3PP1302013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf94247bd990434f5780c7a9bd95ca31371d79d3e5b144740d669574d0a25c83b. 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/US3PP1302014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa76c3f2a9d9dfe1e975026232e8e4ee00c82278101698707247bd4a0fb229e8. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/QZTVM2346808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd701dfb7c749e5fede164fb3d39e3dc581a6e203f3bfa870557399f1711fc909. 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/QZTVM2346804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a3e073dcdeea4552bbbbd3697f7d2c831d81d354be79dc3eabe29d71398f82c. 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/QZTVM2328443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8ae5ad003e6dc10c19d366bac83307e0886a3b0ce182cdd032741442282d4fc. 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/QZTVM2370111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28d4357d934c6f58d0158fc2dab05c1d964cb06859b616396a7e2879051b84ce. 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/QZW9K2352817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89dba036c6071d6505808ee3e488bda1de337ca1d3b9a3b15952f06693eb7de0. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZW9K2376376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1fb1e24ee71a25d4ec42b94be1e8e7dd741a9827a11cfe45cc512092556ec43. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T06:52:52Z), 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/QZW9K2384945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x876bcdc489c5762c17769e4e72335d3fb51db55d2880fbf70a1fd5b610166a5a. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/QZW9L2323185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8cfe44ebf072f7cbde0763d351d84f39d8a7539940e8470e2d393faa3627990. 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/QZW9K2398514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7eab80116d13ca0483d87897c5b2b9eb4bb00857a5aec3bbd0d11b81ba6a0cb6. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T07:00:21Z), 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/QZW9L2338600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5552d58b1b31f27363214048484b71f96c2c243ab34487cb5c141b1a4199a054. 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/US3DF2456480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4b72dbd963e9cb6c215e7995454b0b9398900bb8ff15a17f62447bcf50229bd. 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/US3DF2456488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0daabe2db9e43e3374622476611241bffdcaf211ba2a2c5013bc984f3c0b8c5. 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/US3DF2587811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x952c3160d148e48ad4317c0bb3b1da11de5c837b49234414083c9e2d829cf652. 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/COC011530566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffd5e8403302e3cf812e1af8df8675c42f68fa243c65c954b1d69e17b8e3e25b. 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/MX2971300554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14aa0454d8eed95ef51a86a5e7578190db093087cd6cd71ca1bac915dd28e07e. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/FRX202297283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa378cb3500fcb55ad27e92940aa6213fe9c5304226d647d8473d58b81ac18ff. 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/QZW9K2460020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14aa0454d8eed95ef51a86a5e7578190db093087cd6cd71ca1bac915dd28e07e. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FRX202297283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e20b517193022884d0b70f3f7784e7200e01145c272ac48b7c45b66897349b3. 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/QZGLS2087400.
La Zona Ocho (De Colombia Para El Mundo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe815936d24c7b29cd2714d26305074a10d6ceec3c6c0f4fe6766bacb6fac7e97. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/FR96X2189213.
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