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 0xc6b8f0d0cf81d8dbfdfab990dadacf90d7606677888ef6e292aa2bbe2b6842ed. 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/c01a4990-bc3e-487e-a196-adc7e0ca563f.json and https://artists.proofprofile.net/proofs/artist/c01a4990-bc3e-487e-a196-adc7e0ca563f.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 0x08d6217ee99ff22c207ab3b50437b14527f04764cbd1095efc8de6d677e1f542. 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/UYA139900111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd84a10044c483d7eaa753393afd654e522ac85502e2f1cdce6ba3ec732e15f50. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T16:02:21Z), 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/UYA139900113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce6e2a740685c02cdc8ac756cf77a1561e52f4d032c64d6ae0dc7f65083bd7b8. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/UYA139900119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0f2a604e18ff5219719c3438966517af80ef2e77f328551f6d3bc7964c481b1. 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/UYB140800102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x485acce5dffb025f50205fc4ba416b2a90a354698d11fbc0026041fae2014b68. Chain 2 (Bitcoin): anchored in block 957680 (2026-07-12T09:07:22Z), 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/UYB140700501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44ce4b234729b49b5cdc5f806890bcedcd2b6327ae5fc86a027804bcf0469529. Chain 2 (Bitcoin): anchored in block 958733 (2026-07-19T12:51:21Z), 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/UYB140700503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc838e40fe0e6e3078a7637b447472be0ac3621a6657de47876c9761a13bc15d9. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T02:29:14Z), 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/UYB140700504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2208179cc05f08e074298538a0630afc97e16c8e88a2e97d69d57ea9598f5e24. 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/UYB140700505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x502ed049eda12a8137d2da56cda8faa3ad1c4a2a417f09880105c4c5a50890d8. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/UYB140700506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa94760d6bafd0c898b9ab2c87ffcd89bd953f4c28337ed108a453ea6977b1ff. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T19:05:45Z), 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/UYB140700508.
Ja Ja Je Je (Canción De Cuna Para Kurt Cobain)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa749956ba8779a13876a76469db150e724ea64387e484117535a4e3604e54c04. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/UYB140700509.
La Hermosa Langosta Aplastada en la Vereda
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28c013378d8c0d68af2b77b1e55075e41f5dfcb003da928bece8bcab9e1fef35. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/UYB140700510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5d0975d1377529f60d9f6a46c1b5822f3ac39e2b3be64e8a7ff13b90fc3dafc. 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/UYB140700601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99c2845ce939e5d5ae17ccaf07c2d92ffec640ab9dfaedc052b2c9e3bc3958b5. Chain 2 (Bitcoin): anchored in block 959071 (2026-07-22T01:04:44Z), 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/UYB140700603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8026afa318749f91d0fd1a34c7d75fc503e54cea3f03910562d06407d8482b2. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/UYB140700604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29554fcfe08169a8f48f085fc392928492f05c0c9a0d829806a69a12487e68f6. 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/UYB140700607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x961d995a34af15af78e01f3a35be4dcdb9d47c3696509dd5ab8fae750707a7f7. Chain 2 (Bitcoin): anchored in block 958691 (2026-07-19T07:19:31Z), 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/UYB140700608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x351a973833e4be729ffcf2eed0c30f04e45b92181d636711d6c4bbae7b7e1a60. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:09:05Z), 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/UYB140700609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadacc6e38b9c4179e5b2a22c1da8478c6873298f1d2f5b7146d308f338fdd477. 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/UYB141100103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc8af737e8613bd6e270e1b5c5c60501eb676fc1dd84afecaa1bf8c2b1dafbcf. 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/UYB141100105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15336c70872f3bbf1e55b0287d7bfe9ff0fb5ada5fce0f019403b410518becf4. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/UYB141100106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdacdcdeae90cf973af3739afd3894f87e5aed35f38f4309ea4461bbd355f674d. 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/UYB141100109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e5c5ef3cfa9095e6c079211f3a0c6802ea1b7f964af307dab05b8772a386041. 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/UYB141500806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd26850913078f4bda4e7e9fa59a35077a406d139019742e0df2e79508dc4ab0d. 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/UYB141500810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf5a350c0a570c17febbef54976bd4a9c5b43e3efb2de181c0cebf15de495608. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T02:58:57Z), 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/UYB141719901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28bb6cf740adb3ecbb11ca57d932f78f15ec6d2439f9eb72ac6707d15dccef7a. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/UYB141719902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47c6c8e45f0e79cac510971038e3ac636359bb9d47185114b1bc9eb92645e37c. 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/UYB141719904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81fc395aff23c791c536a14541b00da7be8ea9205b895f25b2291f54ca416221. 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/UYB141719907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83ea596d16eba4f6647bbe93675f0d6827a2ed0c253ee7f4498253e9afa3722a. 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/UYB141926301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfefe365d47fbe86f7c7b8b4ec3f120d1cd4e24e57cb775d006f6d2ae0634e396. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:59:01Z), 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/UYB142020203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8430f7645c1c84bc16475e98b4f8acc527963679b69b344f49bd072ac6206ef. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:21:33Z), 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/UYB142020201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a15ba99fb62c9efed439a0bb5bb626ddab71012698a15b0c8fbf409d894619c. 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/UYB142020204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x592e6cec21aeaa10c639ea1dd39fd6179e58e32aea80b356dfaf48f7547723a1. Chain 2 (Bitcoin): anchored in block 959089 (2026-07-22T04:59:23Z), 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/UYB142020205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6601f0fc4f236cc2da2b4d9ee8407412607086d581904ea93d5c639452b5ee74. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/UYB142020207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbfb5523c155962abf86d5d9fa080579a51450bbc290e84b42ec5464f6663ba4. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/UYM121000529.