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 0xb497cd6e7b9b0585e0ca443eda2498411059ce083af4eabdfc2fa9d022975487. 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/1daa9b5b-6bf2-4760-92ac-6cb35cbf49a4.json and https://artists.proofprofile.net/proofs/artist/1daa9b5b-6bf2-4760-92ac-6cb35cbf49a4.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 0xf6113e4c33eced1c1044957a9ef9b1bf44c349032e55ba3b83843594670cb3a1. 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/QZFML2000068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x478337f1bbac71f2f88b7c9a5833aab576277b5216a8b344fa72e238717e0952. 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/QZFML2000069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3546988ff5ddafc1838cdfa9fe2ee2f9482f98cb4b1d8e9fa83489ff2ffeafa1. 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/QZFML2000070.
Canción de cuna de ruido blanco en un avión
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x024402e11d14e75bbfe8bd1edca1a52597e3bfc44de7e60fb4122570374e89aa. 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/QZFML2000071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50c0589a9fdbc8d4e39a23ce97e915a5bc6b7ffc73eb3d31d7e08907c8f5479a. 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/QZFML2000072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcf1ce9c6d8ee632cdcf6e7782c1d9811cfbb5c7fe0218b9bbf4da07cb89ad01. 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/QZFML2000073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ddb421e72402116ccec5bc5565a2172848e0a11322e08261300274250e514fb. 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/QZFML2000074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5af52da4ab1b6267ff9a1697e9fcd8d8cd504753a057fda92f5201a7a647c362. 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/QZFML2000075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f9972755dae5ff4527893f79b362054ee5fa6257ecaaf1989fa2598e8805808. 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/QZFML2000076.
Sonidos naturales de avión para el sueño del bebé
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x736ba023b97129162d5e75490806fea73e293720103b97720760aeb53478761a. 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/QZFML2000077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e3dab0b9fd9b8ddffe7a3b8c63085381c3596f70dcbf0ebd1d66d3f63340d39. 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/QZFML2000078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2650c901637064fdd78784c3acda2ec8e2299aa24852bdfd22a4573e2af6f2bb. 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/QZFML2000079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x107c084184ee73c5a4312b035355a3f58c65ae3707467dd0892172c88f325beb. 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/QZFML2000080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x753d55be7f8d4e985aca0ebd6b6d40c3ebb85d9a7b212db6c986b4b7b6718694. 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/QZFML2000081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c33508bfd6d3d8b3d32c362d3ee48b3b15bfbf676dc21249400f03abbb81418. 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/QZFML2000082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf545f28a5d167782d67a3d2181f9df1ce98950b82134a0d4137c2cbebb61448. 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/QZFML2000083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac54bdc9dcfc45e90a8aaa8d10c3286378bde675a7c7f4a6788ba289d7f3918f. 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/QZFML2000084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7b0849edcd8f66c2d8ee5f0dcb4a8b743938787fc69aa1df042f137e1eec463. 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/QZFML2000085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xceb25251bf4014e4c4aeecdc7e47451b65391c7436e16962068ee5e002b6cf9f. 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/QZFML2000086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2a40e39b577c329d5cef5b5878306592f193c8840f6f1aa8b24a2d5076ef80b. 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/QZFML2000087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72356186ea41883546c56994968ea303033ff6b3f9330ed19357a1f5db1af679. 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/QZFML2000088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc9379e996f8b9d0e2ecf63a50d77416262ad710996100419b373129f6cf738f. 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/QZFML2000089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x047d9e468de374522f4af62cfad968e44d142091594f21f566ccf260d715d5ac. 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/QZFML2000090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdce5e32812a3873acbad234ef186bd5809ca2706e75f6e50358157ff993191ed. 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/QZFML2000091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f1b6174f9139646925c910817065d571e53d82b903ed3c32b2cab78a28c6284. 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/QZFML2000092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ce61fd81f8c2806685d31f4e6c0ef9d76bb19aa2f960d553a51a73028d9ac42. 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/QZFML2000093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1fca4e490ece5b06f3679a37ed033aece7c87e0c4312cdba5259c71b069c1a1. 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/QZFML2000094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07432518e2d28425b134dc45140e0d3f70f76b273281b39036c033f60fe08038. 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/QZFML2000095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29df216a030c4f1cde66a6c049105797bda3ecba505f0afef1bb64e08a2e6698. 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/QZFML2000096.