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 0xf6f81d84e5e75650ab6301512e4a6bc3245f1de72be9bd9931cceaaa4095a7de. 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/2ef97044-ac96-414a-b5c3-c6b3bd1f6824.json and https://artists.proofprofile.net/proofs/artist/2ef97044-ac96-414a-b5c3-c6b3bd1f6824.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Avonturen Van Het Sterkste Meisje Ter Wereld
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 0xaec163189da02c89a761e6455eb153e1a85a346395f395c54ddd0f80a745f5bb. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:32:47Z), 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/NLA290400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87632cf80469a92f53aee2ad3e4e640d18fcea2a1447d241e1f39a2ccb120497. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:42:06Z), 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/NLA240907025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2285d52f22757b9d3228b97cfdb8932f0a31cb51ee12a7b7162b0a462ae417aa. 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/SEUM72100702.
Pippi Langkous gaat aan boord (verteller: Dieuwertje Blok)
Pippi woont nog altijd in Villa Kakelbont
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1382b6f9d7b4e3b36dc6b48d3a4c97d2cbe5036b33ad0b7b8b6e1683820587b9. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/NLT342100157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41df0969ea98b5e1448ae18a500c9c0c82038308ed64c98c13bf9c09a635b428. 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/NLT342100158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65b964102a48d7efec035785f963c7dbbac610c2a50e9a00835d4638d225cc38. 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/NLT342100159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9c607b3444598c96bc049a26b078e764d85b111ab8f83f1e4cd38a12548ed27. 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/NLT342100160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5be94c7ef3cfc125172fb6424f9a40b1dec34decd77a296acb3019b73e7839c0. 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/NLT342100161.
Pippi schrijft een brief en gaat even naar school
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4684a0e3e79debebf9264b99d4433ebc7d8da2b78118830337cd2bffb7f9b66d. 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/NLT342100162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dfb8823f118d710055f45d61482529118b1038d467aa0c2f3eaa23fa2b65c7b. Chain 2 (Bitcoin): anchored in block 958695 (2026-07-19T07:37:00Z), 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/NLT342100163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf6d19fdede348bbc83d246783217d8c2e4b9c4f5a2cf022edc5b4d87035667c. 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/NLT342100164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6411530ff22cd4bfba00f2d9f1ec6fad7a55869deb05f2bd742825252901bc20. 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/NLT342100165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94fe9e2a2518487814a6220f445addd6e34e17052cc067724e53532ec8b1f4af. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/NLT342100166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73ae0030e4ab44ca9e76e137ce381dffa9087501394fb4f7246bb5d7b306005f. 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/NLT342100167.
De carrousel was zo verschrikkelijk mooi
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x706eff0d1c7068072235ec374208c6fdbd034e2f86473495abf427a4ee8a2007. 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/NLT342100168.
Pippi Langkous gaat naar Tuka-Tuka-land (verteller: Dieuwertje Blok)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaa578ef4acd3cf103064bfc567303db20bc2743e341a83205407e7183f25c3d. Chain 2 (Bitcoin): anchored in block 958696 (2026-07-19T07:45:31Z), 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/NLT342100185.
De deftige meneer luisterde niet naar haar
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd44017b378868bade611d6d83a1f4175d686a93d5d5f1a91584344610a394c8a. 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/NLT342100186.
De deftige meneer keek naar pippi's rode haar
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc153f3a5da5d774da3f0d84b4d69d355b2b82507d08347cdd83d61558cdd3b1f. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/NLT342100187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92740d3ad0665cc3f35f66afefed02cb651a6e6f7d66a497775ae16504f6d90b. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T12:54:58Z), 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/NLT342100188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd661caafd4db719e81b57d794477af4c23aabbfc18634bdce22afd017d54b8cc. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/NLT342100190.
Pippi Langkous (verteller: Dieuwertje Blok)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8244c7686068de9a9595406f94d075a5cee4bee6e03fb2725e0587efae5e3f02. Chain 2 (Bitcoin): anchored in block 957852 (2026-07-13T11:25:45Z), 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/NLT342100144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7116e6789376e5663f5a28ae7a729ba8e0faa5645425b6a2d54a508c2ac71c9. Chain 2 (Bitcoin): anchored in block 958051 (2026-07-14T19:14:42Z), 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/NLT342100145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a7d0ccd785a9d99ffe17972dc4926221726b806fbe27a794e2cbd760dc6d14e. Chain 2 (Bitcoin): anchored in block 957647 (2026-07-12T03:57:41Z), 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/NLT342100146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15b868b8670660237de717220a92fd7eab0e741cf8a6c30381ca331962dc347a. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/NLT342100147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93319a61b6dfd5842063f11af875515fb9670b020f2e35535ac870b50d6bca1e. Chain 2 (Bitcoin): anchored in block 957650 (2026-07-12T04:18:57Z), 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/NLT342100148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x472375f864301a404d28935d62bcb351dd20d2179b38f3faeaaa8a56e960821b. Chain 2 (Bitcoin): anchored in block 957642 (2026-07-12T02:46:48Z), 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/NLT342100149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aa904729bc862f766191c1f88b551becdaf2bfa5d0f27d744a9fc1615011c88. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/NLT342100150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde6c369713ad723fffd844cee29df8eb26643fae2a0ba6033eb1a55081ac4e9b. Chain 2 (Bitcoin): anchored in block 957648 (2026-07-12T03:52:24Z), 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/NLT342100151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2e50719ab6e184efb1ee86622066b32476cc41ac26bdd9e15a48a4e856d908c. Chain 2 (Bitcoin): anchored in block 957644 (2026-07-12T03:18:52Z), 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/NLT342100152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc470ae1ec5d7747094b9ce78a0effa391703c67ed68fe8cd1febd819b889418f. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/NLT342100153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6a00618506147a6c08c32b0aa208768c1fa6a1ac367dcab59866a9462f45089. 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/NLT342100154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67aeffc60625f27e94784cac62cfcbeba84b25465dee41ce924cdc1f4bba9eef. Chain 2 (Bitcoin): anchored in block 957653 (2026-07-12T04:35:02Z), 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/NLT342100155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e9910e5825ac2f58034bb3b7bb15d01d6dc7704a6193c0a5be8fbf36b7bbb11. Chain 2 (Bitcoin): anchored in block 957650 (2026-07-12T04:18:57Z), 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/NLT342100156.