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 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 0xcc415db3fb90cf401f3c0581a9b770ee49700ca9e04fc72a9e36f3bd049b570f. 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/4d811f95-ceab-4994-b5a4-bab30a433fd3.json and https://artists.proofprofile.net/proofs/artist/4d811f95-ceab-4994-b5a4-bab30a433fd3.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 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 0x6dd3622cff1ebee18ca07d94c0fb98c43530aeb13cf42a95cc62a00d45fc3e0b. 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/US25L2300047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe771918350d6717b92006c4f7208bacd20c8a52b3a14c95286a46e4a1dc2c674. 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/US25L2300254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf6b8ee2b8d8c8ea22f14c12eba83921e107e5660295dda8b8e6cd7820de5784. Chain 2 (Bitcoin): anchored in block 960381 (2026-07-31T09:50:11Z), 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/US25L2300255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a8ba986c2c11ce52f528dfac276b46075a2da0cdd1806328de1d04e52e6a4a2. 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/US25L2300256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c7a2851ab108456330a531a3e81b596f37464dfe24fbca088a2da9f0062b38a. 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/US25L2300257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc07f5850e40c67e8858b38c9cec90184c0c8cceca1aa336c4689749d15b8ee70. 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/US25L2300258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3711f7083d196f3dfae584939924a60269576105ce3c4d57a4f121eb0bc8923. 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/US25L2300050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35c13ac9900c0a0a239a9f89667ec4714125e290aec1f20e696499bcfc272e51. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/US25L2300046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35c13ac9900c0a0a239a9f89667ec4714125e290aec1f20e696499bcfc272e51. Chain 2 (Bitcoin): anchored in block 960125 (2026-07-29T15:38:18Z), 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/US25L2300046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x034ff7930af4cb6248f754d8bd113ee1111a491dfb4e1f77311304454a5be043. 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/TCACS1668003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25d4699edc9863ea71c5ceb737e80aa41934661355431a54ceaa089df519f2fc. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/TCACS1668005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17033f569468be35356d043ebf21cca21b4b5345578da9aa966dea84ec944620. 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/TCACS1668006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19c12a1a242a4b82d6cdc81221c8af741676608a2ba8e2e52cd1c758bb283bba. 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/TCACS1668007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd068fbfda9670c9607f5c9f4110287a9f391745f466b89f52a6f6c1ec8661e75. 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/TCACS1668008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95513644ebda9e99d12577f3a3dd6584ce1700395d84cd057069533eb5318f78. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/TCACS1668012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a76689d0047ee3db9b26c3c92b37a3260222182da01111377d4b21cf8a03c96. 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/TCACS1668014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7e27926101a1f760916718b3e4073a8ab9cdaacdde1288fefc9b6d7c9907329. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/TCACS1668015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8db8c5083962fdfbe3ecbafd58834272e32962697308114f92a9fb3399bd896b. 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/TCACS1668017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60b1e4390de457ae5b756b2e6b154b73bd0cdf4c0ec2c6ccaaeff1a0b80f5cd3. 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/US25L2300204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06417fc30d9cbaa2a4a6d81051782faf444bf250bf459deb949fef0c189e3b99. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/US25L2300203.
'Ven Ante Su Trono / 'O Come To The Altar
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb67dcd1412421aae786a3337bc68ba90c73c62fac431d014e0cf7ad455ec2c5c. 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/US25L2100132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfea021d0ca9a7e39dddc0089f3a10ac23957414b1f651bd2810adc73243351a2. 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/US25L2100154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a150832eb33e6d3d74ffdf77279057ae8b475eb207c66adfb1f476e985e9eba. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/US25L2100163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa54794f53a4dbbd210dd5a1de3306d1ecdd1ccda766fef01da8c8669c13ccb34. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/US25L2100165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb67dcd1412421aae786a3337bc68ba90c73c62fac431d014e0cf7ad455ec2c5c. 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/US25L2100132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06417fc30d9cbaa2a4a6d81051782faf444bf250bf459deb949fef0c189e3b99. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/US25L2300203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60b1e4390de457ae5b756b2e6b154b73bd0cdf4c0ec2c6ccaaeff1a0b80f5cd3. 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/US25L2300204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63f894fb629876a480cb89088455bf66a39bc47f745d3fcdc2792b532f53782a. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/US25L2300206.
'Ven Ante Su Trono / 'O Come To The Altar - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfd1bdc761a977e19df1b0fb2ffbd38f88a08cf7b68c7435f0e2ed3ac99001ea. 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/US25L2300201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8af4d1bc209f875f71786c0c02ab699596443900d15869c6b3d57f3bb1413e17. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/US25L2100153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf01de75b3f6e47612c916a326159554007a33948493ffa2549ef75f432ff2375. 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/US25L2300205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b6e4334a050839cb76cdc96afa312edb44b7f826d8b67e2c1858a97d938b298. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/US25L2100033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92ce18607dc781d74ffb04671efbe69ad7cac07528581cc2f916410142ed9edd. 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/QZGXC2301158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53408d217d5b37f2531e20331b4a288e5128d3e62a53887a7730195774643d4b. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/US25L2100034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x758fc5c298659a72b162193e21ffe0b6c70250be8a5ac532f6d360c475fda68f. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/USHM81661332.