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 0xa49eb9deb0ac910d21106fc68724e3ec410d18071d27ff43bb6ecc5e71bb1031. 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/45018625-7c07-41d2-96e8-ca555d1a493c.json and https://artists.proofprofile.net/proofs/artist/45018625-7c07-41d2-96e8-ca555d1a493c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Amdavad Rap Life: 2 Heavy On 'Em, Vol. 2
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 0xda637eb6072c78d9e93615d896d807272d5195395d3a23f8be37a958cc081c10. 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/QM6MZ2412951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50f400bcaad8738995c02f11a30724ddb4f57803b6109a24dfb41d28bb6f7563. 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/QM6MZ2412953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb294cd13e659d6b8b6bfb590c80b7612e9c3d48c5a5c32280215acfecbf70aa4. 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/QM6MZ2412952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbc0099c9771721ad9838b2519ef12df4cea22b5999eb4e977c6a9dbeb407459. 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/QM6MZ2412955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9813164e73c071f8627afe8fa752ab75fdf69a09b8cd969443998edb5da2e1fc. 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/QM6MZ2412957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb6a1926b5e1953961db868e28aa3b75245c7270dbb8d9859791c39a87689d54. 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/QM6MZ2412960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2020d26f8bf4d55d155c507b91492d720a114e4f525f22269840e99627ec7e87. 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/QM6MZ2412961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4615b274fdbffbc502a9b11b35d21927b96704f4919ee5a026a00c23504200a9. 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/QM6MZ2412962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43913831349d2f6d2ed00b914faa24513aa188ce2b12574167a0a46a56cf6b62. 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/QM6MZ2412963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x872a9a31053d8a5caf3ee1adfcc58fe8a742079f2213f9996f6773d6566f059b. 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/QM6MZ2412965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1440fa764bb021d8a84eb05c66399feeee6eb55cb2539c40cf74fe70ae652ccd. 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/QM6MZ2412967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14d83f4ddd5e052577dc1946b8658ed8c3e19af6b98cdec5bfd9792128d8e7c4. 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/QM6MZ2413896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ccc9a21087ca4434061db78d5b25269bd5177474d92593316c04d604a444efc. 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/QM6MZ2412968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4430ed1029e26065e9793e228299c1fff164dedf19627784208c73b8507cb7a. 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/FR96X2440503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93f67a907ff4d3a38cd4af1f7f1a76e9bf26c749f7d093944018080d84ad999e. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/CAENV2131639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac5534418b6c73ea8866c6044f6de4b616d428dc82f0e07309225d44361bb05e. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/QZMEP2036245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec81d9f06c54866c11a5e354021a15fc87748dd7f4825a14aec08db6b51e1f70. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QZMEP2036246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x070c6fc12718fabb47a3dbf38bc9c0d0a069fe22b68def3b2e82bfcf906a9f26. 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/QZMEP2036247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f78fb29dd363f50981dd4c190d65fe2cc1de816d22e805d3e23d01b0420778f. 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/QZMEP2036248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x030180061484c9418e3ae53fabc2836657914ee10d551051cfeab239ddfeab84. 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/QZMEP2036249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a8ee14de00e4d9f63343369e1c4341469ebc017de49cd23e756a587cc56cc84. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/QZMEP2036250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x562bef7ae7cfaccb26a4e2cd5606f0fc0d11bb6c63202520269e6828b2899819. 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/QZPLR2130804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d32ad8dd1b0a7421cdbd204b3baae664a0fc72bb5b11531b294d893a03d1131. 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/QZNWV2172990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x417a8659cce4076dfb3e9448dc238c513d33f97e83f05d74b9ce4a5f2449ea14. 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/QM6P42413756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe3e0134453c65c1ecddf28ceeddc888ba182e57557aecc4f1fd8db8459cc5d1. 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/FRX452441822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0015dcf359ca366e689ba4b73b04c25da5a8edbb317b00c337a9eff96804ae2. 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/CHF032406652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94aedbc202a045e42575c83ef1dca78d8e2fc6f53a655250f0b06bcc09479e2a. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/CHF032406035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf48fa4cd6dc0c2bf204ceef88074048c46b01ddd6b00a3bef1d34d5d8cb6286a. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FR2X42359808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c2fffd75e9b4b78cf8a9e8ed27f2d0fe5513ac6db49b4b7d7166bd6e23d2eba. 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/FR2X42359809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81711f4b2e5289f24bbc750470934ee25f513cc3766d38bdd90668c72b3c4040. 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/FR2X42359810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03d90ea6e9d328d9f6d269f2fb6458d1b35a37561c25498142bf8a80ae48a6e6. 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/FRX762212526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05bff8aa4aaa2e487ebd608ad338bde1f9fb065c3626d431c331b5a497673155. 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/QZ5FN2130272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb952e4373230eb05ad447a4639a41f2b3c2014e1979defeb70208f26aa4a08d8. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/GBSMU6735837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf77c747898de8ba9bb930e65588b38af46471768d6baf033b6fe026666948c2. Chain 2 (Bitcoin): anchored in block 960485 (2026-08-01T00:10:46Z), 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/GBSMU6773362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a6800db0feee6a6c54656e07cbcc2a1b64dd5c2dac2b4bdf56f6cd941f1813e. 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/INO132200055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f8998667f9f5a7ff77a4b10efe187d25522a6758b0b7fe736e884bcecbe5bdb. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/INO132200059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eac993f27fc541a8196168e132a5bc6c2edbf987f013cb48eb04cb91b74f754. 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/INO132200060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25e806decb2d21591822486c59ca4e9d1a942926609368dd975310ad9e7b1cb4. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/INO132200054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0162e2d9846d683dcab5c73ac3aeb08fedbcff59cc205f560deaae61fa4276e8. 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/INO132200058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae1d1edfb4bf11d6891892c41eafe54f404bedd27396d2715242aa594f7c1c82. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/INO132200056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1ee50a0fd510ef6b108da3e3edf9f0c0afc18bd6d9c0f125dd2d7ae14bae985. 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/INO132200057.