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 0x456b54c9a429dce0cf298eb7c3caa517c2803d57b0edcc447851dd954cf24b6d. 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/04c6a042-55b9-4734-b382-7c909faca68d.json and https://artists.proofprofile.net/proofs/artist/04c6a042-55b9-4734-b382-7c909faca68d.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 0x17abe04c3cba1a47ea17d0f723febd6153ba27b9caf0b6bc72069167e4c9fdfa. 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/GBPQS2200112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0277a3062233a053d26680e6b0e3caf10b1715087cb2b58eb0d83c6ea3ed2a54. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USNRS2242227.
Forget Me - Fred Everything Colors of Winter Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60cf713d9eebe174339a47fac78227c353a517966f4f2ebedc22ca7173707a48. 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/DEBE71500214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2eec894cefd7dd47e2039b316b1b10d51145f9940de0c69ed0c6d70dba1579b0. 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/NLD682202875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x251134778a8978dfd6727dc189dc712b1efb1063fa5ad6407dc38cb1fb460efc. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USA2P2443463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f2262499b23fee72bc981b94235d580e0f05e4bc7ffdec2012e79f66f472ecb. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:00:12Z), 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/QM6MZ2465834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x157de416dff15daf4834f07afc17bbf46da170f3756c8384c60295be64c6dcc1. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/US38Y2403893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa46380a1469972df60ba27f9638f29a31c18dd45e4dd6b69e91535684cac9325. 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/GBKQU2431548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf2e15df4c1c29219ce4e6d5db0cccce9746c8d9965716642010a47cde38760a. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBJAJ2400253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b5b6e686a58de3821f5d3ccbbada7d62824046644c6d949a985585dae6d9322. 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/UKLVE2401458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x259289254c5873d0e3e0ef923a7af41094e26653cdd58fcad068da910f3836ae. 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/UKLVE2401459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d7592abbeae5310c9b57077f5fb640808f5e5d393924772abf89070ce2f6474. 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/UKLVE2401460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedf7963932bf64411cf7f716e10380b61a3144af5c2e6490c211751a87288a52. 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/UKLVE2401461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99b6bc39b7e5ff705629873bd8bacf183e15d259c160ff22f272bf5f56630539. 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/QM4TW2403081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2b9b2318c49b36dc9ba484631198ab7f2fcee47e7047ce3ae1be9bb23e09aaf. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QMFMF2326584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d4cd2a2ea4cee84b06bacce1823bff107a348c1d86e702f61564b664a110a31. 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/QMFMF2326585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a669a33895bb3b3d79aa454f4bd15e067e2df466e15083688129c8c44105a13. 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/GBJX32378026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf01e158f31feaf9a5c48cb38e56066355fd602341ac43f2962aae8984d94c556. 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/DEY472372868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5055aa2a77c3244b9a2c87bebb8049b4a58e9db7bac71a149c77156070143b7. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEY472371257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c2f63a142b6edf712528cfa7c285d5911b794c73f4f5c1fbf2e7012108e6f45. 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/DEY472371259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff849eb22f3238fddcb18d422054d1135d7a5b8dab59888af510e46c5edd266c. 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/ITBVO2200190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9adf96617e5c6ac5d9c22838bd8d4fb0316fa7be3bc07c39dcb83baa4ff4965. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/DEEC33500635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd932edb69bc5883b6d3a76af791e090b37d3aa767d0501fe1fc45466b716c2be. 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/AUXN22232328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37c28d5df3364e388bf817f44bd52537c7c4d34d1c7ddd190791e6b4d5da2a93. 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/AUXN22232327.
The Thing (Manoo Remix / Additional Music by Bacanito)
This City (feat. Lazarusman) (VIRSION Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67eb0711e6d1c721b3435f600716710a0ad051af82e73fec51381277041ebc6d. 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/GB5KW2100366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddb7371599224c24811758389f7b0904f0a5836f0d83815793ba07c480d71c87. 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/DECL12000992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa04e4d8c7c06569e7057f7c5bab06cbbac80fd3820e4c98775396c8f6ae53ca1. 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/DEQ022001674.