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 0xfffa971cb93b4ba9f782eae993cca2bb5eda976024b13973927c62772c1de8fc. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7511279b-258b-4cc6-b3cd-6f66e2f3a17d.json and https://artists.proofprofile.net/proofs/artist/7511279b-258b-4cc6-b3cd-6f66e2f3a17d.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 0x810ffedca556355197e80df370177861eafa6f6c31677365629a9a1b56f951c7. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/INS450800602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6890529c4c9ec675ec82597e233bf426b29cf9c94c6de34b5d6793fcfe9648dd. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/INS450800603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b6f4bc97702d4ff33282278a61b9cfed37b88f218c1a94e7c42749f9ed60cf3. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/INS450800594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8823d2fee10072d42259c1ef9876da8872bc4c3d7e6cefc7bfa36c8cf9830915. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/INS450800582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e59cc324ce4eec4ef28428da2d1beb7069e113cd3272511c43409452b49fa4c. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/INS450800585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80523f2617ce5def3eab409b0a40058696827495fa10f45cd4f900b40fee76d2. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/INS450800578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4c10892662f637951e139e85447240def834b2fe731ea8652bf4d78694586d8. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/INS450800590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c1529f0edb0c2716c54d20aeaf2477d4bd6afbd6bfe09f0af3665c7c74f9505. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/INS450800589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x306c3e2f3d7e3e3f303abe7e0ba5d0e79c47f97ccd413538ad82b224a13cf9fc. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/INS450800591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6136ff3fd29d6c95d1b0ce2285f8e8df3e09865ed779b4e9e1ee81fc31c1bce0. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/INS450800586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c1fe86ee27cf17dd10c1cf28df94dbe1cee670d58d8e8b2eb9cebd36b1126a9. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/INS450800577.
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 0xbde7ba587e3486c6d2c91d85d33963afaa2aec8cbfcfe9adc059eaf498fa2e9f. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/INS450800580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbb9dfc962cdedd26dfad798f1436f2ebf1f63370cfb13867aa773cd66dd0134. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/INS450800579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd961a7c8f6b4cb8dfb9720a9f557b0aa2f95d6c3117004badce5b77c43d5b7ad. Chain 2 (Bitcoin): anchored in block 957013 (2026-07-07T08:31:11Z), 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/INS450800616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3709e19a2949941d046e13c2d7491cfcf49abeae70582aa844066ac7c75a317b. 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/INS450800620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48fe8c7f1553c7f50e73cbeb643f52abdeda5eecb3f1dadb0a0ac0857885e084. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/INS450800618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83f1bb8b0bbf5f58e0650b926dbfd66b27a10f98bcefef97cdc17efdc5e6dc76. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/INS450800610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf94d747e125e4a7f15705fe039be7d8a250be390f6e6cb8fde82ac1c5f746dca. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/INS450800608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x872b62692528c37038ae6fc791798204204746c2f08d5b881108c16fe83719ec. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/INS450800606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf535a421eecfec5f032f622382caf65d1561a5328a569ebd4aa4b7c4cbf4823e. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/INS450800604.
Patanjali's Yogasutra (A Chanting Guide in the Tradition of T. Krishnamacharya)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x558a34c22230babd1c766aa3864450e4b4a8f3f5149d7789d38455d6dbc95845. 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/INS451400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc22fa8ef2f23f8ff6a932a12b6c0fdd55e72eca6adf872932f7253172125fad5. 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/INS451400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa53bbeead607c300e1e2a4c3478dbe0d5aa9051304672f285d219a6e0d874002. 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/INS451400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27b3eae02e8ae98a3544a30a70008fa4c4f0474067931759525fbf16aa6fc4f5. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/INS451400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae783dea038cc4ee42e46b05e6097d28e4eca01d287fddb7ab05f7a34931f941. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/INS451400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22bf989a7a3d8a4998e9a464aa9e60dc1d819a9dade8e42ed084734c943e1b3d. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/INS451400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x233db9bf7f9b0d8bced9ad4bf458ef9b758e197ee1f321a4213deed5fc706b15. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/INS451400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1012dba96bdc77fafa8505ec493f9a2e14404164cceed644124f1f2019feb83. 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/INS450800003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x909fa9affc4c63605e0fe8d8fe33774f5c0d13bfe728f4f9652b786d1597a223. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/INS450900009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27aa2536883c5cf0b0383c44deafebf2d84f45ce6d4d1e8ce0baccb7b08ad605. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/INS450900023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2790d5cd1a96fced675cd30c21ff4947f8fc4e9bbcd9fab3bfa37d9660200a00. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/INS450900008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e4cbf40394318beb6da485e97a8e48045fbdca470217b8bf42eeed38557f847. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/INS450900024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38d43588be753fd7a6f2fa2f307696686621fe73862f18f4d23624a85a5f491a. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/INS450900003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90d411b400195cb2dc8e21de7ed8a367381574b3e0f4c28c1f9f1ce0fafbbe9a. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/INS450900011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf102bbdd4ed815db71eaad1160be1ee0face7302164875378c64c09e710dab00. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/INS450900017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb66e4e3e174dd08f9f65aeb75ebf95b083bd1d227ed3f5c6acd2d7200e1b143b. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/INS450900020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7eabb82121865fca361c278c5b23e8f70a7f534e46447a6a38084647e8bd2b42. Chain 2 (Bitcoin): anchored in block 960355 (2026-07-31T05:49:18Z), 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/INS450900007.