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 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 0x2363dc9f9d22ef8ee64796277534ac0c43019f4effff9bec7e1aabc79f97c4ba. 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/f4856109-8721-4762-adb1-c4554d8e5b20.json and https://artists.proofprofile.net/proofs/artist/f4856109-8721-4762-adb1-c4554d8e5b20.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 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 0xae615591e11adad4cf546b5a35384794c08c5eea8e26fbf2321921342398efce. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/QZES92301503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8becbce25760288774a4bc54a8235e72d3916f07c13cd13eea6b6eb49c19847b. 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/QZNWW2353415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeee75c52f962a62e6a11ec2a7a86b8a977948e9c8fe813d5e64b2019ba0ea21. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZTB42350634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96fa94700fa7187b50778af8c971304e3c426c415fb97dc123695be63efe219e. Chain 2 (Bitcoin): anchored in block 959109 (2026-07-22T07:21:40Z), 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/QZTBB2375599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d1ccaeecda707536657a6526a2f2417f69a49a7659c0e7d6158fc7199017298. 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/QZHN32457756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfee1e03c00bd9cebc9168283d4dbd31e990d88ff8fa4bd8b29c04c921c9c9966. 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/QZHN82453259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c59fff6b1c3ffe151b0b70011d76961762856cab2185150d55e5f9c5deb0286. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QZWFF2457748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c94e162f488ba9b39fe62fd42946ce42525d391cccfc829ba67ee045f4a4284. 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/QZN882442393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x535bbd0f59e803a79c03605da91cf40618df7c65b068031fdf8c41ab041d656b. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/QZTB22555764.
Baila (Waribi, Hemmy Music & La Formula Récords Remix)
Baila - Waribi, Hemmy Music & La Formula Récords Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88eb87983e2f738c13d6a4d4330df6dd67c0588269c4251669072ab9a12c4057. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/QZTB72534564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b9372783aea2f6512221a018a3b2f15beda3499992f91c6dbc9d0977a2b4aae. Chain 2 (Bitcoin): anchored in block 957779 (2026-07-13T00:19:08Z), 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/QZTBB2585085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38a75bc7c6a7ac54a56df181784b2cf2903d493f4b8bcbeca042b6b1e8bfbd4b. 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/QT3F92591060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a6d5396d26b69eff33701fea83a77fdf3184a40c5a274ff6fe8ecb44f652d1f. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZN882438591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3353f9f58d53d37084e6d01cd7525a885343bad11a1336646354df840e444ab0. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZN882508481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3baf279edd777edc99bab7aa0acdd506db64d94bf0c4e8c00778279b1344249. 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/MXF152500369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x136069b69064bc8b314dc5c5f59fa43f0b991ef6d6096dd3d2ed7322f66db18b. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZN882513815.