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 0xb5ef133b3be75b6959d51de7ac0b02f59a5daab820b99505a5aedb9994f00211. 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/789068d9-343d-4c42-939c-654e355b5763.json and https://artists.proofprofile.net/proofs/artist/789068d9-343d-4c42-939c-654e355b5763.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 0xd3fc384a167f269fa839b3a961048ccf3225da354a924fe37ea3b33bbf1367b6. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/QZ22B1930127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ac4d3310b98c97dce0a57b1ad89c38c395f35ea5e4cb57af81a8d1f1b69514c. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/QZ22B1935896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x768c49ab1afb9e4f63b43c0ffbb34043864aee49ab7d1232e87dbdf6fbd4564d. 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/QZ22B1935897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6a8588a3a219fe0af472807b2d6edcc620547a4e6f4977f4c51a8af36e97847. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/QZ22B1935899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x435a2e286031647027018acd3a36c891cbdeb46e4c93deab41fc38dd03f8c350. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/QZ22B1994189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc25a71d07de8c3c9fa9db486040aa368842082df9240152d728e9ad1234324fd. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/QZ22B1994194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b196e42a663d4c3a63fb76170849aac6a9844ee1460e30d45b1f8e062b64265. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:26:13Z), 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/QZ22B1994196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43cc4dc4676b96e72c287521ade7cd10b965b92bc3927d4cb8af8294458421f5. 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/QMJYX1859802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d89164860a381af6a6f56cd05b8b220334a39df24267acb122e373c783e74c7. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QMJYX1859804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed9b2124c7abe5ac82e92fa077e0a0019372eda9e79e970df9e9653f7b688476. 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/QMJYX1859808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7fd03f00b2c38c060863a7e715d899f6de255e53cd6d992b8d97f25a24da58a. 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/QMJYX1859809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15f1e794fbad35bf1f1229a7145258a99c66a6a201c7713b0ce98d9b96d18ad3. 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/QMJYX1859811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98ee8137a60b16e888aee57b3615e1004ee3871d1d794cc7dc08057dae18bbc7. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), 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/QMJYX1859812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fb10f371852e7e298484cf44682fb2828e53d602ad9c8c6f37758599ed1fc38. 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/QMJYX1859813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x961e96daae2a074713c8c53748f08ba580b5a73594e53ef16d72395c84ea222b. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:39:20Z), 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/QMJYX1859814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6169f39644712fba791f0502a0af0f95b75f288a96c2471f282abe8b96890fa0. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/ART0G1801888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x969516a7d0b867ea2eee8a4c91d254a94d4acdb3dd20481e141255dafaf94e48. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:32:51Z), 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/ART0G1801889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x185ba1e5ffc1caaff24377f2a22223f02243c6c49090a8e8ee85d9e1fded0c90. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-17T03:34:52Z), 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/ART0G1801891.
Muertos, suicidas y el método de la sandía
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81fe6d7bb72f52eacc27b48eeab2f3ea23446f837951c7bb8cb5caa22029ecea. 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/ART0G1801892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad927b0c10bddc12b34c7393d6fdf411e6ff4841cab6f086bba33c0de077fde8. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:26:37Z), 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/ART0G1801893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5aceb98be81887ecc110109adc1786e8c2149de7bea05e12e87644b1803b534. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/ART0G1801894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x994dbb2de319981abe552046ad00f5736944acd12783d5cf693c02763dd2ef12. 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/ART0G1801895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0291619578a2f2cac1e2ddf9a088b89025c77321bf08cf8c78e3f11c4e41710a. 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/ART0G1801900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8622cfee0ca962b2d5098f51bee37ea0f109d86a330774dddd621b7161f1653. 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/ART0G1801902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf314bee8d3e8631122aa949d803bf7597a6bdb1b88db6dd9400ef2e2085af997. 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/ART0G1801904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ca7a80f2f13a162b284f5ded0f9871e3d6ac1aa4ed077390128615b0a2ed821. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T05:03:16Z), 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/ART0G1801906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa04e4c2bdc81fe508c475ddf5ba8b78aa969a2b014a11c59c8e31d9b939b008c. Chain 2 (Bitcoin): anchored in block 958465 (2026-07-18T00:04:42Z), 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/ARIXB2501302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6553b96f22df4507bce4affe0e45a3f26d7a4094cb8282266a2dd2e544bdb35c. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/ARIXB2501304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbab7dd0ce67d5113bde11c2134cdac3c51f0316966b882eb74b969d6dc6ce74. Chain 2 (Bitcoin): anchored in block 958891 (2026-07-20T15:57:19Z), 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/ARIXB2501305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23c486f3a449fb295a7d2b5cf56650cc78c0a9a176a4a61623a7fc45aadf6f0e. 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/ARIXB2501306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bb131009c70aa3bc42951a1bf0417624944951e0ad7609e71e744174e13de46. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/ARIXB2501309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1564d1e0c5f48679fd541369c8f1f3284ed247a325ccf7fb1888052b92a5ad4a. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/ARIXB2501313.