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 0x01fc04b00258850be7e22b2f098c02d6b40c47e7e8e17226ba06d0b988246600. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d906c3c4-85b6-42bf-a038-3fd19752c73c.json and https://artists.proofprofile.net/proofs/artist/d906c3c4-85b6-42bf-a038-3fd19752c73c.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 0x172174b790ed2c345f678c37de1c53df576b652cadac5a6fdd6a98141300c978. 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/USHM22330293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc38fba041c039c7574f27a22eb1ee083a9562f39e28e06611ddf12a9f8131c5. 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/NLRD52017097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca60285f7df23a52b3424e05fd74a1464035b2da62e9a7653f5aa9c5315af86e. 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/QZFZ22232182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a7518b0006e967462a4dbd0e6d081a21d1865efeb6617d929c043eb246c3ea4. 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/QZFZ22232184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7975bef415b4a07c1cb52f97153ba85f2fcab5938345ff2b147c8c16d8819fb. 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/NLRD52017091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5804fd81550c9319755d3b3989808a68b4a6b2a0cdd8db74ddc7b60e9dd5ebc0. 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/QZFZ22232183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b69914d7bbaf3e067d5db7c4d2908e981bb1bf63e4d6c8129171fd959c8114a. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/QZFZ22232185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47d70d7a3544cc60f6bcffa0222d14a2396a4325098e818fdf62a9921baa33e6. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/QZFZ22232186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a94f0183f34577fcc30ddc5e24692a4ecd7eadcb300329d643d6be86d7dbb0f. 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/QZFZ22232187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26fd2a7c2dbe9fe935023b427a78fc7326ad0923efe3e6a13b9c26dc6bd7e2f0. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/QZFZ22232188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0810d66e7b7755dc25a0a5b34e27d2b678159ebc97fe373125b28c8aa691173e. 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/USGYK1650014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc04ff54cf88c5f9cafa057f22c79bcb35f94c88767772c8ba943f7fe4c24b77a. 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/USGYK1650016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x256e47abdca5ea0513f6e5253bfdd2b60126ab8d37e389241de09505f3292813. 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/USGYK1650018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x873e4c2a0c87996d79956bdeff7180a20423233eecaf9ad467f2f5fdfb9d0d49. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/USGYK1650015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6d139e6ebd16ec11adb6c3e30ee3d1b0bed25a07a98d930c03d893f370c6c04. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/USGYK1650017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddce4a4751e58b008dfbcc722fad10bbc326ebcc78198ee20ea071d2ea34b47f. 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/USM2C1500401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0154fb1d29cccb0747bb6cf8537a67ae218d8f0cd097aa0dbe8a4ec4f2490f1b. 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/USM2C1500402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f7c27a2bb2999b98717d152e188d92726db95df98ef587eef2ba2dac81b10ab. 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/USM2C1500403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f1a5f77c7d9b1b057c78a5c076a8861251c864a5c9587271468970419c88b54. 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/USM2C1500405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x885d8341e014ddb988c1205bdb68c834a14e0d0ea5cbfa896ea028e54ddc55b6. 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/USM2C1500406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7de8c27618e288143cd25f4bef45657cf60041122df91459ca4ba6745d36c3de. 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/USM2C1500407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8df77d7c30464b7ed03c8e9d24cdf08f0914ec560647162aa7b55811b5d2ddf. 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/USM2C1500404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b3490a2feeed0f40701401513e2198230b74c8bbbca900f09648915cd9ab6fd. 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/USM2C1500408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x131fdb9d05f59457603fee9340b57d831af6194e8e65764e7a1e8318b3b6d288. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USM2C1500409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5438c3502e2f017d269b26d1d028348c1b10b8be3a8baf0951b8eac1dd9c37d. 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/USM2C1500410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fb6f3f8c58e0e98803fc26c0467ed58a5cb06ed94f0398858d633885a0e1f62. 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/USM2C1509117.
His Little Feet International Children’s Choir
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76a6d95dcfa6cfe98fa0bef3fbdea355567b9dede550efbcd63513aebf01034a. 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/USM2C1509132.