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 0xb8b9576ebfa44bdb708bb79dcde19e6799e020a1904ffa3f40a47eb4b6f8bc12. 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/3f8677e5-48cb-47e9-b2f4-43427f014c0b.json and https://artists.proofprofile.net/proofs/artist/3f8677e5-48cb-47e9-b2f4-43427f014c0b.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 0x7ecd5cbd189672563d1ab90645b5d747f8cbc4037c5e8ecbb570091cec4a58ab. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T16:15:11Z), 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/USA371244003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11387e5148b4b2b9fa0100e412f6d461ceb1fbba7247ecb9c4726a1ba74670fe. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/USA371244007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd82baabcff8103ced8892aae5630866ff972016a4c4ae80e17be50bde0f3c67e. 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/USA371244010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b4f6593cb78740f7197bff2dc39b99908ce77eb3b6edc6a76e198c5263cbdc7. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/USA371244011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6b8ea3ab9d7c36fa886034de4b9a8dee70b2d168719d4f155a492d26a437660. 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/ARG991039263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12e99fe76b87f2bebe6575d9798e94661b43206106e390f5a0700ae794795a7d. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/ARG991039264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfcee1e4562e6d5feb158217450524122973988ff1e23175915f74a94d5821b7. 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/ARG991039265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e700838d67abed1af382e8d88f6deb7c0abfe5c9d6ed4a74702035c7d731c12. 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/ARG991039266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7a2f07d9852ad099e5d0e287030ca738aab3b533686af0d8cb149ec880362f8. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/ARG991039267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52f4fcfa2ea9d50b6060d981b2e8203030690c4ec5f3af04a0710a0facb93120. 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/ARG991039268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0ef9aad59e382e2935f1405b56eb69efb2b8abc3f99dfd9c470b70e2380fcc4. 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/ARG991039269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x710b94886e3a8395e6d20802699ea24c52ce38fca0150dc005a912cd04783faf. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/ARG991034918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5eb7afe0892352126947226691083404463674b43e52d8f8b8a9c70b6fd7fce. 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/ARG991034919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f90ac02827ae81e2f7932ad7e0551dfac29e9ade212737cddc6125533c5b626. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/ARG991034989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30205c9b3c59c53581c02da13eb6c757d20448055185848252acca3dd40fc039. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/ARG991034991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39a2e0203c8b04c2d27d366afb6403d3afb88f53a66831e243e5eda8f9e4abf9. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/ARG991035888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd72ffaffb3ca083395f78fbdcba82cf35b2071e63ef60b7a2a9db00c519a2e6f. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/ARG991037098.
Sesion Con los Exitos de la Ihuana Mary (En Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72760e1b4db6befdaea7dc51df788d65f6fba95ab58c4aaad376e69eca1d57d7. 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/ARG991039121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57880d520f467cef1dae40b1f5db9186255b9e0de1771f8624acb0837a12c5d9. 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/ARG991039122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfab0e2a881c7c3ce1e9c643ae70bc31cf39488227fcbcc38143fdf99cba85fa4. 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/ARG991039123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8854406d940872203b2e8a22029bca4c9e9a65227087a613cef1b3393deac96c. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/ARG991039124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa32d6188564ee81aa6f16f28a781b9115879015d39d3627b43bbb4d7a998ec2d. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/ARG991039125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42cdef2cc88cd98521dd574dd421438f49ad9902b16c8792f2b2c0c2d51c2376. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/ARG991039126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a6b7ad1b6ac57ab53cdb32b322b287a76edfe9ca5149b384c04bb8595931955. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/ARG991039127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cee083d9676f64c3619049368643473a071dcbae144cd112d85bef4026f5e85. 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/ARG991039128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6359e6999a059782449bac50dcb14f743c17285410f74543d02a94d1926de6c3. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/ARG991039129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67e3841d60d728fb98ecab970b883bdee74089e91c7beb13cf50cd655f356fee. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/ARG991039130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b1a6280d0ea5f5c32481cb77ad37e39443cbbb5695d0729df8b2d64dfe87b25. Chain 2 (Bitcoin): anchored in block 958498 (2026-07-18T04:54:58Z), 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/ARG991039131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ca710c67918d778e0c3901b2413b7696b9df815db195b0e7d7b5c4c77a841bc. 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/ARG991040199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe26a373ca00c74466ed1091285ecbccdc360fdecaa21892b248ebad5455c0ac5. 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/ARG991042150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe80800e9e1ffd38eaf1f127972f87fe97a659c40e9ef6d10bbb77b93c12963b9. 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/ARG991043012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x554105b120de8b5af9ca7160149831c485369bd5e5f3e82f5b2f25647c59d13b. 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/ARG991047856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8f506523d179ff40610a1c222ef7a399e81eb29de329f7c2e2a5c4b02b85da9. 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/ARG991046480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe80800e9e1ffd38eaf1f127972f87fe97a659c40e9ef6d10bbb77b93c12963b9. 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/ARG991043012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7e05a8c2d55f97f30a200ec506b649e0eb6839a5921b43908f7b12d5e27aa13. 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/ARG991035449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ca710c67918d778e0c3901b2413b7696b9df815db195b0e7d7b5c4c77a841bc. 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/ARG991040199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff4b69084b4b8b85370293ee5110797aacda3e85c901e8139b32348fba0ea0ff. Chain 2 (Bitcoin): anchored in block 960222 (2026-07-30T07:48:45Z), 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/ARG991042346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe26a373ca00c74466ed1091285ecbccdc360fdecaa21892b248ebad5455c0ac5. Chain 2 (Bitcoin): anchored in block 957011 (2026-07-07T08:25:35Z), 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/ARG991042150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd72ffaffb3ca083395f78fbdcba82cf35b2071e63ef60b7a2a9db00c519a2e6f. Chain 2 (Bitcoin): anchored in block 960193 (2026-07-30T02:05:19Z), 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/ARG991037098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x606a151f037f249a048c9cad6a1d5f1d9efd19e9bef14f649dce840d7d36816d. 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/ESA011773138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52348cdc9dc3512b1c5adcecd16bb20393de66a7b28c9216cf26d67d50cb6828. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/USANG2242796.