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 0x803c5befb45b1987b7c73748a1fd14ceec5ebeecbf5b26b3ed6de13ff7ec729b. 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/2abf13ef-d67f-463d-b317-316d5abde6ce.json and https://artists.proofprofile.net/proofs/artist/2abf13ef-d67f-463d-b317-316d5abde6ce.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Cuando De Cantar Se Trata (Remastered 2025)
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 0x2b409216d03f75f29ba02fcbfbf14b7100cd41af56bbc211308d23dc88974e2c. 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/ARF249490001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61b1e12629044630dd64f70c922187ed9f74956431a33922016937d68df9e268. 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/ARF249490004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb19bd59127232711bb557fb56639665a5942216cec9f88935082c586a28a7e65. 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/ARF050400987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea3240c149f8f47b0ea168f41652095e7fd858b325f4e99d5e339f3c84877f67. 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/ARF050400988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x196b1418f225bfb47d0d9885c785d348ed5120b3edebc00be3ab0209398d33ec. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/ARF050400990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0454daae279843b0a7c34aa3da5c16fc456222ba43c580e77a3137ab975ba6fb. 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/ARF050400991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa72116626912d71e70d1276f3cdc943437660a6658b76cd08a0eb432ff8dd104. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/ARF050400994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1a43a2b98b0339920e1a8bf1c1064f43be3d6d7c38a24b80deb60e23d793356. 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/ARF050400996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e2e3d98dfed60ce663dcf99e5972df6cc2bd589eda82295a50ef60d45e21a0d. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/ARF050400998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c4639882b3ada41c072d1e115ccc0bbbf04ccd6f09dccc3159491c21c9927a5. 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/USA560307072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd36391ad7e7c801c3c9251cff95af34b62c27eb43f92134b5974051e87b048bc. Chain 2 (Bitcoin): anchored in block 958656 (2026-07-19T04:04:08Z), 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/USA560307074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf36acdf548a3addfd369ec34fe60d0042212d5853fcdc652136f54f52c7988e9. 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/USA560307076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58fc99a5fd0bc2b027d86e96d59180c060f8f33d3ba5c2dee0faa894c776cfc1. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/USA560307077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc86165bbfe0ff5818f16d5e327cc813f9e15d6a09740b55f1f40c282c518c9c8. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/ARF220602086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3306e1489887dc7d8c096738c639297a625733321fce15dc150cd473a475b268. Chain 2 (Bitcoin): anchored in block 956405 (2026-07-02T22:22:35Z), 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/ARF220602092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94f83fb0def2bd499521f3e3cad3a6efca4a86a10b6b111629d4c48fca1775e0. 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/ARF220602591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4e4853196f5eb5ef454a83db264744aaaac0dde975e3325a83e0f968b970cc7. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/ARF220602099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5d5dcf3895fe722e4c4bc23b92cb83282dba26891005785a30e0ed7a8d4f127. 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/ARF048400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb138e66b54583d9f99be8aa992706068c209ee215c003d04403d695a7daace4c. 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/ARF048500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x781a2667ead571d901b5f39b5f2af44c0c730b104c8b17efb0ec612acb8d4310. 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/ARF048100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a7a5a8fdb68db21fdf3c72e6dbee0405c9a0cf57f8fec1870770ea269f4351e. 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/ARF048100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35308c05abc2da675d060b3e9ae03010c9fbe3d093eb7345e60c6ec43b566ca5. 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/ARF048300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24163070c641fcbdf4d98a736468bb4747d20d518def682d0eb4a8f8bcbfa3e3. 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/ARF048100007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcac4d055ae2ed5b6a145c13c53fb73832a0f8c554d715d66217f1e6e5199baf1. 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/QM7281982700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc581679ba460c5c6f23116486daa07ec2214ba2f463a7cae3fffc6bf6f9bbe62. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/QM7281982704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59dbf390387766cbb79012934fa461130002c4e5f4c52d98dec2034d6c645e7f. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/QM7281982705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa89ad0bcbef9e1a5eff5590333ab335893ad89b6d8b71539950bea520a667026. 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/QM7281982713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2440c3ebe59ee5deda849e0a014a4cdd28ac2066d555515032a13f1d2ec475e2. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T10:30:17Z), 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/QM7281982714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd14054b4d8bfcc34872a7f26958177c107b80062c7747172f234386a8cd4203f. 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/QM7281982716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14db1df39977986aa4c9d3978e0648ca96c6e44ec20ed49fe16258aa23f011b8. 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/ARF220602590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x095607af734b41a338fb537dab285b4dc93367dceab722a12e66c90c7ebf1bb9. 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/QMBZ91906658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf55769272ecb2bc42618e8e18f466c4fab6e866e338bd2a96666e0a6c48c059a. 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/AR8L71300837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89f8946f5817794d4e4095df267e67a82a5917ed4dcfe5d2938136465efe2ec3. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/AR8L71300848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd6396651a6fb43bb55aad6116b165e65bf95f8ed1aca24b6110331c5a90692f. 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/ARG601000365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ad3ede835093014f970bf3e44a3e3ec812364f17ac3c9d1ba32648f2848a30a. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/ARF050400726.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa805646c732e90469bfe3821c1bbe27264e2c409d2764fea5a0f992af7873306. Chain 2 (Bitcoin): anchored in block 960285 (2026-07-30T17:26:40Z), 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/ARF050400734.