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 0x61ef8d5d314ed3d1e6cadf4fd2603542b39a57a8ec91f31ada50c33ad8844d9a. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a68f3c5a-91ba-46f8-bbb2-f37f0dcf0d2c.json and https://artists.proofprofile.net/proofs/artist/a68f3c5a-91ba-46f8-bbb2-f37f0dcf0d2c.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 0xe70b6e0b64261ce55e5bc0d63b1931470bd044d9fa243e4602fad43ab09794e1. Chain 2 (Bitcoin): anchored in block 957676 (2026-07-12T08:20:25Z), 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/QZTB62264542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53e6d18658dcbe554889d854c17d5efb025bd7981a494877fe663c0128d1f685. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZTB62264543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c81b77b975b044dc62f42dba008b802fc636053dd455ee81dd6c026a99f1605. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T05:55:09Z), 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/QZRP42247746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1ff9823dd525f4c17132e2fc9c4927e57c197a7728e943d26db03cf843b9c97. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T00:35:28Z), 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/QZTB62264544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf21bb10d4330e58f30fc7196a3c01ae54609469a6f17b98fb044a197e09f8e00. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZTB62264545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11d28a8a18ace4f60c3dabd399244e979d520be0fdc9ba2e4a91b959219fde54. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZTB62264546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc88d06116bde1eb81aeaa5e9fc428fd7cb26f081591eb758a0b75bb7b7ca35d3. 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/QZTB62264547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9bcb9065da501cf0a1d629b0b72c26a66a4460e49c23982d7683151f373d565. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZTB62264549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a0331b1db31eb5b4bfc760405369e1800ca3c272546c8eab7b9eaaa5cbd84e7. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/GX53U2460399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0604c356d3411972e7342fdc03b1a564d9f2be16ec5186bdb8db126832fbb562. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/GX53U2460414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x566f00db9887ccee0bf062fc9963948087511b597e8bdfdaaf227a0f771dcada. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:14:58Z), 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/GX53U2460416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa92b27106b416487e98ec97bd38919d95b1712fa7d5e4ae9f7990e0f9acd63f9. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/GX53U2460417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae98161e4636b6710db34f011d58499c46c555382ec388dca338bf3054f55605. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/GX53U2460418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a62983f45b86b3c5ffc19fe6bdc9b45dc5b0188f2a6278b25ff463d0f1bac38. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/GX53U2460412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47c939f3c3c7d9716209d33821d5416f9d0daed6afbfac097e91e3a4eb7ce890. 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/QZNWW2492077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c68685ff02de0ec1e24604ad5ba5562f5adb472eaa534382d0b13063f9b829c. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/GX53U2460413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d4666b53242908029e4a67f42e0485a01edce4b62106f98df86e48785aa31f6. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:07:44Z), 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/GX53U2460415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a0331b1db31eb5b4bfc760405369e1800ca3c272546c8eab7b9eaaa5cbd84e7. 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/GX53U2460399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11d55dc99b720a9456cfeed12cc533f3ebbb221bce897c58ca8100fc5bf25f56. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZTAT2357403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c68685ff02de0ec1e24604ad5ba5562f5adb472eaa534382d0b13063f9b829c. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/GX53U2460413.
En el Calderón (Himno Oficial del Atlético Monzón)