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 0x4c5a35d75e34325863267ebf0f409974259cc9dd4cabf15129c9618a8c223aec. 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/e83ae796-61be-4483-9c4b-23cca2d3db44.json and https://artists.proofprofile.net/proofs/artist/e83ae796-61be-4483-9c4b-23cca2d3db44.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 0x7ac8dd9c502d9321249148500cd8dc0ca0cc20ad2e986b32464df2450998079c. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/TCAET2068867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e7473a75371aa0c396f26b38aed97c8a211d36fd4fd350cc98fa9a78c127295. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/TCAET2068869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae7648bd9c7bdace6353be0810e1e509a7081135b9f7a0e7ae861e5e77d007e0. 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/TCAET2068852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x326a08e151daf979374267feb3b7b18bc4278fc52af1b9bf7b033448c766a182. 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/TCAEM1921690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae1eba4e4420e1f1eaf770987e47e2d11e053829b1db526b1d531cb2009712bb. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/TCAEC1957354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19e7da9c251d2e80e143cbdcbbaeea8be154df571eb224ee3ec29eaabb1de1f1. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/TCAES2072248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2f70351cef8fc08318473a9d1160fa5100c2c4e3b37c2ada46607c0b85a26e9. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/TCAES2072315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21084e2c555e034b5074a10d0fe9027bc95350a7a7aad9c3420e1e7604cece61. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/TCAES2072318.
Popurri Navideño: Ven a Cantar, Llego La Navidad, Feliz Navidad
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x900ad4cb0bc473549288117c4ba2c675f7f4f5d133d574dee153deae4994758e. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/TCAFS2103173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x387837beeffc6f7f63ca5861b9b1d0c027db40637ff24c0b65f4ef57fb6c40a6. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QZNFJ2200072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68328d722b0b3899661f96887f9473703b38b68dfe5f01f3e7e75aa997c57ff7. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QZNFJ2201668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15e891e654db785a05fe9a109f8a601f7720a7ff2fbb7b8af3209624d1fcaca0. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/QZNFJ2202634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2da11faa9ba9a9c221be16e989c06edef9cc53b88214d7a90a00f1a93af2753e. 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/QZNFJ2203634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc8869ad81cf46f0d227e22c6570bcc04beea47dea70ec3827fe210cc205222a. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/QZNFJ2207077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99b543bff3a31667848428919a9cca7121731fd4b3cdd97980db185a97f33c6f. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QZNFJ2402419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf3a35ac40bf16dd65ab117edadd27c93e569e9a5a62578fca058ca904bddaf0. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QZNFJ2402422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc4ace232c1b1dddd1e6849b0b67008c2ccacb37c51fd372cfd03c558132d422. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/QZNFJ2402423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56a9e451c0492e636608dfdf265ef05f3abf40f2766fd17feb13c5cf14eaee25. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/QZNFJ2402426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a71ccef4886b2831ae241b24c4cf56be49d724994822898086ee18f4a9c3429. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/TCAET2063091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf2dfd67ac71c681f5c3c5d81e710db309c5d087ff98a02f686026e4565a06f7. 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/TCAEP1915744.
Levemente: En Vivo Desde Carricitos, Sinaloa
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5cf3d3a944793618d30e845f84f65a86203cdbc4ac9961e1afc8be9d9a5a06a. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/TCAEO1910629.
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 0x277c119f5771c964f3eb810641ea8dc62fcf0a53cc877b1273f4257167ad055e. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/USUYG1335616.