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 0x6d710771ec92204b70f23b8cdb0facb549bc1a4853952639b2ebd1041543f4ec. Chain 2 (Bitcoin): anchored in block 953807 (2026-06-15T16:39:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f30f62b5-51e3-40fa-b6b9-0acdcf1d4803.json and https://artists.proofprofile.net/proofs/artist/f30f62b5-51e3-40fa-b6b9-0acdcf1d4803.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 0x9b0b40b6b6c000f446d88ac52608418a61eeee78c3f7361f5da1b3a550897e02. 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/QZNWT2116832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a2e7dcc69970d1d163f5e57e664e1e3db250a870b5c624b3f1e51c5ab380025. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/QZNWT2149344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e80a08a37fd26dd95462147ad66c727b099a76f8a271fd4972186f2662de503. 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/QZNWT2165285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87b11b1355acc7cf5fcea51f2f8dab3eab93f9482b96d9b7a506886639795486. 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/QZNWU2151069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3379d20d8d575e87dda7a396cf71ec5f6ace944923060fba4c908b97bb1908b. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T00:35:28Z), 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/QZNWU2161740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26e97cfb86cd212e96bd96c5435606ba6e53b550d751cf777c20525a99ca4312. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZNWU2161741.
Ko va'a vi xu'un ra (Norteño sin dinero)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60b147a55ae00f7d57af2bec5c3416e13fb3126c530ba7cf22b61d37541d6eab. Chain 2 (Bitcoin): anchored in block 959052 (2026-07-21T21:42:39Z), 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/QZNWX2140309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08bae13fd00766abe3fd5520d227c77a61b21e768fc1a01787e9645742584fc1. 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/QZES52260889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6e8a2cc4e79a404540245e5c9abd6b61f7a5c6c09a48c9b20f4568a19ab6c58. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/QZNWX2297020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce2765341ae2af8f49809f8bda6f867beb9b212ee35fde0bd0addb749c18b948. Chain 2 (Bitcoin): anchored in block 958617 (2026-07-18T22:07:13Z), 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/QZNWX2297026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x160ba1de964d206cff79177b36262dae1e345e4abc078c1482458ef44f97315e. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:46:39Z), 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/QZNWX2297029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x994267c8bef47d93c3c70c56f794f52af770af6b3eaca4e18002e19765b12952. 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/QZNWX2297030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4adb91f6d3d8ba7e067ae7ce6f26c01059e2a8e6141cf7ae4fad99b0bd9ba8cf. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T19:17:28Z), 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/QZNWX2297034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3309012db2b04e10b114b36b571c636ba96c4cd57a213363ccc156b96d2e3d04. 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/QZTB72258961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f55a5051d92aad30fd59d7c3435511f2146441fc1f49f8edafbdc6b9ca188ba. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZK6K2447881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x182806992f33a2742ee7a09b48c85b95d6fe4d069a10ac16ae15ce12fc08e387. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/QZTB42474382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37a1c48e3e10369589158bdd7bc0fc316aff54d8789b11d51003039ea230e9a1. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/QZTB42474383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6391da2dd407787d3c0db2cddbe6c352a6268643127bc2808e9397510310b2f6. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZTB42474384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee014df84fd5e2d68e8bff9f3b6c92bf8f25e80078accae60b279d215638c812. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:35:26Z), 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/QZTB42474386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x318d54817961de1a9c0f128dab3e863f4dc9ad740d6ca5b24b78bf20f433d2f5. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QZNWW2563564.