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 0x1233a4244b1379128cf1d29893d81f4677eeff47b91f98ab4ddd9085d47aff3a. 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/b55721ff-aab6-4c40-b0a0-d4b1c5d264f4.json and https://artists.proofprofile.net/proofs/artist/b55721ff-aab6-4c40-b0a0-d4b1c5d264f4.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 0xdc31e127adcae081e32c5d248be687227fad45ed1926929271454e87d672ff15. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/ARG601700105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2ee0c828d29eef68603f75da2be8facf6a788b02116cab6884ac4ed41bd9cac. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/ARG601700107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc4efaaf1a6fb64e8bb275251ef779693865302ae422b4c828dc8c9cf6621a37. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/ARG601700109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x807c837dd5c50f8789ee9e2f0276c7c847e644c3adaaa4756f6f9a77c26d76f1. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/ARG601700110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe363a099b60dc32d21835161055f737dbfea5269cf612facc9996c640b41e35d. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/ARG601700111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfef27459c6a4fc29096e86effb31fee60d5728b20653b7bf69d83ad84d25b95d. 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/ARG601700112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed9cc078847f70d8952cfbb003de97f246ac9cfe59b4d2d9179338450f7a010f. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/ARG601700113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46d11db41bd395ea41033ffa27a9c85096128102c21458a8d401d2d6d8464f6e. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T19:17:28Z), 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/ARG601700115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54c8d06b4ccac7c6ac06e67e738c391a1149d2a3eff4177d634e4daab867a6de. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T04:30:07Z), 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/ARG601700116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc75c42f4fd97f7e88be4126c4f31034b8ba1248426df5876d6f36620a877190. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/ES71G1856253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2418e53d17ed74b866e7f7b656ec55d1ca152d630f2c5995721d21e3c3fe7726. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/ES71G1856260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x217508a83c1345a6cd8377d8082c355f1268c0635670e03c76ede5852fa98145. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-02T22:05:07Z), 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/ES71G1856256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95f22b24f28a03c73bcf670c43e4d2a917de780370e960db265560243d06174d. Chain 2 (Bitcoin): anchored in block 957723 (2026-07-12T15:34:17Z), 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/ARG601800228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x351c565b2ef19d92c03192d0a614d165abb050415ef0793aa281bd233991693f. 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/ARG601800230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73b34438988869ee49c86268f698d3f0270955140bfe43b2dd0cd0e2cfa433df. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/ARG601800232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23f933be7cc00af48bbfb5aca711738affb7fcb46348880e96c283ac01e2c1f8. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/ARG601900219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63cb218ff68fd8a8e7f67b311bbb2703e8c3f306054d08128973e70583245160. 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/ARG601900220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13ee5df4a4fcc42e31c8bae9fdf3136e63ee95019c00fc19cf8cd8396abe1e5f. 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/ARG601900222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07718cccd5ee79b4dcbce820150030d760dd92a42b74451f08e09c715cfae41a. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/ARG601900227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca745f1f1915a565175efa132a21c692db14e53be8cb88a8482c7aca94d16315. Chain 2 (Bitcoin): anchored in block 957801 (2026-07-13T04:17:08Z), 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/ARG601900228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaca30b02c62919646e498f6f1ed56ab7d243b902ecbbbc2a4b630b154d54d0e5. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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/ARG602000054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45a012493e627b830e9b300b50b33636d2bef040515f111b254cdeb93155773a. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/ARG602100026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1216f52b5d6a6a16b2d0474d93d484bfe332d5f07df75f5a9a82f91211c51a85. Chain 2 (Bitcoin): anchored in block 958714 (2026-07-19T09:51:44Z), 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/ARG602100029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x018e453c89858ed514acd06e22c4ea5f7f5e0ae31ef3a9efbf957f81b60384d4. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/ARG602100030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75ce09e5d349a0f967b8c53c99a9d0768c21a6f1b1c7e468f0ea86cc224dd9f6. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T00:07:05Z), 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/ARG602100031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x606871619bde8c3f1295f279d72229fb0cd8615eb592d535a13c9ca1fbeae909. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/ARG602100033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca1d5cd36b27dc6bf761816f8ba6cdbc9fc76f5b9bfc0d4aa0e4a4973a18eeeb. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/ARHXW2400528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d9170486aada93d9fdf864490c9acf383c0b33df9ce2e3eb56635f3041f4625. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/ARHXW2401410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd300d2e5f9531abbd30f51e7dfb14a9fa72bb2ce342b2d107d61e6ae94023c7a. 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/ARHXW2402211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d9170486aada93d9fdf864490c9acf383c0b33df9ce2e3eb56635f3041f4625. 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/ARHXW2401410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x852e9257261b9c607cdc1b160c7e8e33bfbdf4f51cddaac413733ccc1d972069. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/ARHXW2402212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb742f60cf814d8cc493504aa3fa41a074c3771a2a97352a0c1e751b2df5175c. 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/ARHXW2402216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ccc3cd7d35a28db768aa3ed30a82b4c6a3d01fb42b03b620d30986ec7d2f516. 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/ARHXW2402215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddec2727079ab6f34f017b55c8a2cf9a818a104d76764ba34dc5dc321476e5b4. 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/ARHXW2402213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea9cb0f8b0d04aac5f120c837e48f8fe7482850ca6cf7bc9d7e12d1825cf41a7. 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/ARHXW2402217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c6eb269a81b5e2f96a1a4a22daae91264004192b3f8ff80f8025a0bb1e84204. Chain 2 (Bitcoin): anchored in block 958407 (2026-07-17T12:08:48Z), 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/ARHXW2303325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x498a4b2a42a6bf26bc3a7c91e3a90b8551ba9433f5fe1f1fd16c876b5ef61b3a. 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/ARHXW2402214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ecd1bec9f1d6bbc3ba0fc98c88e1d20316fc30b2fe3f2457c851bcfca1c9014. Chain 2 (Bitcoin): anchored in block 958506 (2026-07-18T06:14:51Z), 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/ARHXW2402218.
Presente (El Momento en Que Estás) - 50º Aniversario
Presente (El Momento en Que Estás) [50º Aniversario]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb72ecff2c7ec684e06bbe3a8946679ecc8bf2c85b9cce4cc10c6bc9f7366b5bb. 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/ARF862000035.