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 0x2014fea7305cf4a4119665deecf0d9b4a0d395227056a630a4f64b20ce9c385c. 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/951284a0-3249-4589-884b-304820fa63d1.json and https://artists.proofprofile.net/proofs/artist/951284a0-3249-4589-884b-304820fa63d1.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 0x5b88efe258a0e02a81026fc74ddd92bbcf1ec2f873ad7ab49ccda9d8087bbee3. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/TCABK1221273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01e0f7de55626fa642fccfd1420151751cdad2e32cd6ea82a6f8b741df1c2c56. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T05:34:59Z), 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/TCABK1221275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce257af21186360120cd0b0076c045b625f8ced13dde3f3748d61abed2aa04ca. 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/TCABK1221278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x350fb9344fe5de85fc820ede2e4447ed6564b9112d320e06902e5ecf6969631a. 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/TCABK1221281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b0f270c6d781f0d26289397512c9682cc6442f0fc765fb5d1de3c43a68aafdc. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T14:50:30Z), 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/TCABK1221282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f098179d4266f26f9a35161d2dd8f1feb2e8e0a11c24f2404a9540073c3bd68. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/TCABK1221287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2f8cabb3118c58e26023a48c6273abcc77ac21a7f9e8b6559b6faf1d8de686b. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T18:36:53Z), 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/TCABT1483520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7d72b6d02f77ab5fd930439f79befb54a976deb59804bad63b97fb3eeb2ce38. Chain 2 (Bitcoin): anchored in block 958197 (2026-07-15T23:37:55Z), 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/TCABT1483517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa44db72dea88e848ad410d524f1d61dcd7f567915daa066db7c4c4b9e93e3bd7. 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/TCABT1483515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4573d75c7eff9e19b0b799cb7e9fb1640e74ff627aafc1c798f78c0875ff1da9. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/TCABT1483519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe77f93bdd0ac77a10902699b32fd4fb10dd94894052e4e1a2bbbfa1addce76be. 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/TCABT1483521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e5698d283697df49848e15d7c23316640fc2ed65be1ebd25b4d67444f5ddca8. 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/TCABT1483522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdc73e5c626911f6e520c9ccc92515735d048cc5f4b740f1cc0cf1024f89082a. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/TCABT1483529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77632351a4670595fc20d033d4b07b1204fd959b5856b7f60938538021d4a3d9. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T00:02:48Z), 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/TCABT1483524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x985f1c5a813c42000a428300ccf4f81e6c1847a548592c6194e0dd27f22ee50f. 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/TCACB1485935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2bff11dd4357c1eec05372554dd83e7242555a86c82a0d25913b1f49addf07f. Chain 2 (Bitcoin): anchored in block 958658 (2026-07-19T04:09:09Z), 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/TCACB1485931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26fcbf343f56e25d423875ce197d730b85a89a712b4a5866b5300a66e6a43961. 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/TCACB1485936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93f11fd20a579b8fdd7a4bf7d296f9644d323502c36eb723f30ba7a2d7341f7c. 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/TCACB1485939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40894665e52cc33997cd9b5de7356b4820ffd5ec4c2f7127913ee818096f7337. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), 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/TCACB1485937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae5da6fd46923c956bcbc67d89bb162f5794df75ac5c2a37cf4f70bb94cb8b7a. 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/TCACW1792292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x300c4d1899e12c1cd361f29f4ede16e5c4e6516d86e9a2e5c0628ea2fd1a46f7. 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/TCACW1792286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x493a8855e39cec0adb16b7ecd6dd714bb8a2ffa9b1143d142b7688cf066979fc. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/TCACW1792288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0eebc774721b64888bb08cd4f347421e4e1431c5ce2339ccfed5a380db1fd7eb. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/TCACW1792289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89febccd6f5833dff15263158aa6fe259972b4c8ea8e44a638ac1828e6dfc600. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T02:06:45Z), 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/TCACW1792294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf6905ad2747f63aab9635c5f0ca6006b655cf8f04f0ad6e4cf5cd6dfdda4a6f. Chain 2 (Bitcoin): anchored in block 959009 (2026-07-21T14:45:57Z), 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/TCACW1792299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8cf645c427cadb3a29e58be6907761161795044fe6d924cd636ec465c25e47f. 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/TCAEE1937511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7db643821bf41fc100f6352be07581537b29d5c611192ba95c08a6baaea3bd63. 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/TCAEE1937513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9229f68c2a77adfdce42c831e532eb6342fb1155f9432e3c018915097f09380. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/TCAEE1937515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x195fc04a5ad35883f700f207b491ad83838fcac676315d808031d6a3b6d2b813. 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/UKP3G2002214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93a7a57c56ab9211a9342820664e4ee6863c6c166b547035a277f1a10595e94d. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T10:22:26Z), 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/UKP3G2002216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7197cdf708bf25e7adbe349fb2dc2dce0ada90872a6b38d8ea074123c2af3dcb. 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/UKP3G2002219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b4833100d9bcc844ba1f234c2739a81b53ffc076ea19dfe4f182111805c36dc. 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/UKP3G2002221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4ebdbc9dac88a9ae288c047951669f22b2d40b78865426536d155b828e1c99d. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/UKP3G2004565.
Old MacDonald Had a Farm (Food) [Learn About Food]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8456f795c0ed656df626974f6779963dfd4598f46b8e7c9aaa178565db48ec1. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/UKP3G2013888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2dcc1f055bfe75283280ea311e47c91e7919b24e271bfb4e98fc5e906f084ba. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/UKP3G2301119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d48b0a9a843ae1e4b13d1556ac057c285e32f13c41c6383496b0b277fc5e5e8. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/UKP3G2400850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf91e019bc5dc054d50f5f0fce3ad650351ca76e76ecf9612c4b2c958f49b8fb3. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/UKP3G2402926.
Children's Best Nursery Rhymes and Songs
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0eebc774721b64888bb08cd4f347421e4e1431c5ce2339ccfed5a380db1fd7eb. 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/TCACW1792289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe349f7547a36ac6f72f3463b1f19186b9db78bb6c057a24f9f29992e1a3208a0. 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/TCACW1792287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b88efe258a0e02a81026fc74ddd92bbcf1ec2f873ad7ab49ccda9d8087bbee3. 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/TCABK1221273.