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 0x6886114f869575a529a5486dff4bfa2af1fa2467851c59fc559cfbc9f0121690. 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/f13e194a-7d0b-4f4b-baf3-8c776b297057.json and https://artists.proofprofile.net/proofs/artist/f13e194a-7d0b-4f4b-baf3-8c776b297057.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 0xc7f31b69cbb1de19b2533e7b705b9d17abfab5a68ef7bd1be06dee8c25360bd8. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/ES99S1800229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca2234b7438d46f46e0aee8d0b14e971c557c328e8a37ebf4c67224fc8cd8274. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/ES99S1800230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62ad6bc571cdab3e2cd5dc681cdfd1907fb2e195b0515ab0614cc6dcc468186e. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:40:23Z), 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/ES99S1800231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2afea5f1bbf0641d73cb4b0bcf06c0c45e77ae6a5fa52dba0f1f194a214bb1a. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/ES99S1800232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0de37acef030bc8b66aa80b2c0a8a7050df8d3a95a762b344241b21bf3cd7cd8. 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/ES99S1800234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a9fdaebbe4a84fbd816e4f5babec74cb911460ea79f74e6d37062df32657ba9. 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/ES99S1800236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd59e1c376c681547c5b2dad333bd1c6a0c21109a4f0d1efbadf24ebb91d2d763. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:07:19Z), 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/ES99S1800237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69f071746fa4c58c32398668a3e83c85855151a1168afbbf37aeef9c88bfd6bb. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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/ES99S1800238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x492fe2a518b2a34fc76badfd7af33c286d582acce30dc57e89cc566b6c939576. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T15:51:34Z), 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/ES99S1800239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e2164e25e2c7c486d8e1c38cddbbf645d700a3e1dc921dd43acff271e9966ec. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:29:37Z), 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/ES99S1800240.
O Melhor Quarto e Mais êxitos do Pocoyo (Vol. 4)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd3ca52b1198f72ecd9690f2f91f0a1f1d4757094a3a3e8d312f2ef59fa1819f. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T14:46:31Z), 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/ES99S1800269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x848bf231d0bb2068db1a3ac7a3493b05538eb7569253bb1e5fa8b571bf3c7c55. 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/ES99S1800271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1145cacc7ecfc0a9403e97581ca87f079c593e16d26d8b4dd3f3a21e5d203f93. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/ES99S1800272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb4ac2cf2b28e53319c52d203eb1c4f44a41660c93b930c6c99ab09b9c216a43. 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/ES99S1800273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2393fa1d5f7e7ddc519b7c187be5e75ea83970b7994dff51f4b7c23c0da97ad5. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T11:36:25Z), 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/ES99S1800276.
Subindo e Descendo e Mais êxitos do Pocoyo (Vol. 3)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf733311183245a3b6cdb4b0d9b43ee4554e4a1ce879db1e7480fe02c8bc0ff2. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/ES99S1800256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaae393f739de2b5b3165fc230022d54680b1962acebeef913077628a2a3284da. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:25:54Z), 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/ES99S1800258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x469072dbee96a99c995c51aea99c134b88cac08ba4c6a7ecc5eb76147292d3b7. 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/ES99S1800262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08c01249a0bae58a41e17fd025ab13d4ade3d0d8b73a29774db8e8996faa278e. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/ES99S1800265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x762bc69d191b5282998c4fb90ccee62cd681f150f8d415a3321e94f8a5560f03. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:10:00Z), 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/ES99S1800266.
O Banho da Elly e Mais êxitos do Pocoyo (Vol. 2)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5791273b7c33b629545fe954c2d34613813dc0697a4f7398279d70389d0f133. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/ES99S1800241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30706a8ee8d5f5dc4e4a74eb8fb419d9c83cb772829f5ae990fb39cc281d16e5. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/ES99S1800243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7da35a9bf31ec5d9d7f5bfeb4ff2e435cd0985f3699646a736b96dd12ea43c89. 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/ES99S1800246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbad65560f33f96ce871e24b2efa3199f5feb705f0c188de7dd1cf9ddee154679. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T13:45:17Z), 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/ES99S1800249.
Dez na Cama e Mais Canções do Pocoyo (Vol. 2)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1a690f9271af09496aa49ad150a9729afb56852b7b0cdf601b83b447832ac29. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/ES99S2100762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9349d47d7e1dd5015143e3510cfa632da56098523a89c02efc82e99ce3e41191. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/ES99S2100725.
As Rodas do ônibus e Más Músicas Infantis (Vol. 1)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe193bd37669378999da080ce2c6e8ca6784426680818c5f44c8804ad5f15f2d1. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/ES99S2100613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2084d54354709de35cf4a355d4e31f3e8a01980c7661e0a802eed8010fd8fce4. 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/ES99S2100618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad635f8e95b5a0082dec26bf7fc88fa4fc86286eb43e0619c01a2b140d3fbc2d. 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/ES99S2100623.
Na fazenda da Nina e Más Músicas Infantis (Vol. 5)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x557465013e17ac5efffa0ac7a7e4049301bebdf9d5011d6d315dd92c6148a847. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T01:59:15Z), 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/ES99S2300841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b86f9c3970a1c81c7b174332f0518a1a0193e0c030f89a335128fe796a8fca5. 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/ES99S2301181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa85c3bbabcd6b1a8ecac2ccbd1037a0d88f8d3525da21c6a69fbf3d5aadea468. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T11:08:31Z), 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/ES99S2301192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf85943d47c4b422723fb3a64567e43c6bc76449625f7de892dce891fd7898b11. 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/ES99S2301197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2078ca816768e01045ae7ce6820e700b8d5f0a0f73f601b0c8364a1bf7c5075b. 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/ES99S2500165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddcea2a2c6ff7e6d19ece919c2c008e3ce5b81408b74e9938ca19125d3abd01f. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T20:49:56Z), 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/ES99S2500220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a40ebed79bc93216ee7ebd549aee1e499e90639a7f1e0037ddb92a0c3c29448. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T20:27:51Z), 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/ES99S2500026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x928ade4d240448bedb011f5bf4b882f797e489ca03ee82833059ff825006f94c. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T17:09:06Z), 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/ES99S2500146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a1b54617725dab5c1cfe3389c3aa01c1bbcd197708113bf4579d1ce1cca3ef5. 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/ES99S2500240.