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 0x119744f6887ba1cf2b38e73a07a96fb7560575b0df0e89000c4ecf5c52f88d77. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/aa3d371d-c7c5-4a75-831a-861d57307259.json and https://artists.proofprofile.net/proofs/artist/aa3d371d-c7c5-4a75-831a-861d57307259.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 0x72e0151cf02e2c203fe92d0059cca216c284c45400b7c2244ba941e769ae67e9. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T21:53:27Z), 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/QZTBD2566976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ac1cade2785ee641a7635cf37624b6d2f888c53c306b0647892e92a521fb3ba. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QZWFL2554005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa1bbd2cae5395969b828253d0ea9623aea720530a1512a65e57ab98f4f80708. 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/QZWFM2503341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7c967f8535c564642d15b3705496316f3e30459077b17dd73ed2646ef15f90e. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QZWFM2552110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1473bad25ceb7e3f4f48c72008b38ce6d12553c45f38cab35a15291707e6df32. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/QZWFW2546753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34869a2d963f7202ca98584037275630ed9fec1693baeb9feafabf4117ee407c. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QZWFW2599388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68390cef793954e79e9bba5d297e3292486d2407c3dad9680d86786fd977c9ab. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/QZWFX2551133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65276740fcb397f86b4ef4a4397ff83566202d6ab9aead43219aa362e4848ea2. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZWFX2595704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17fee1bfe87f7852d90153f69d6871b5b5f1552679719392e71b3dc35b2c6dc8. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/QZZ762547578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5a0415f876843443bbda1d77720375ed697bfb940aaf527fbfaec8fc86d74a9. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZZ772564203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71d9cee251b0a57d012510c930164b9b1f730f72485a2b5d8d09ebb2dd5d400f. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/QZZ772564204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf8dd1889e7490f6ba43ecd6f860576aa4fc84398535c8a5c691059fe36bd40e. 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/QZZ772564205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a803caf6c5f191a32310d7fd6437c225df79950677e8e98a976f8990cf948a2. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZZ772564206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76f0991a6e39aa0a55d3fe15381d134ee1c1d697fb73eb6a0819d364542cab68. 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/QZZ772564207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ffe31bf2b71b383ed4af7c49ff000d707338df3a6205bfe2daf8c13885bcc0e. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/QZZ772564208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23ba09aecdf134bdde557786a0d0274801aeca122c0b946eef7bfc7f7b9784ca. 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/QZZ772564209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fd7d9363924d79af71a827cb8227d018a3aa0ead93501cf7247dfb74f0c6a47. 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/QZZ772564210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ca04c6ca1cb13b08b3edc995600406722d3df4b1272ca0f37c2b86adc4bfd0c. 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/QZZ772564211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70c297eace65539224a6841cee8fe08133a98712f81a6040d4e00486c57284e2. 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/QZZ772564212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10a12341539dcafef0b6476d317a654f8c8cbf4eccdd0796e57713a4e6393b19. 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/QZZ772564213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cd375c4bec14629011110080edcd53a7bf0164ca1643e0c3b8b8377c4a24327. 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/QZZ772564214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1a88284fa16698d6f0184a68ac361e1c1ececec839eda2810be70b55f992d4c. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T17:44:47Z), 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/QZZ7W2560705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd169b71914866337428dac42a7d57bb8470c8f51824deea6a7437c92021d8dc9. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/QZZ7W2560706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6a5cc7c566efe6fd9d794229643a44e6b9431dfa9011b4088412399d3561f0a. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZZ7W2560707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09aaacb8ea313a4b180e295e3ee05e97f65e3e76f0460e5b283ca6ffe830a5a8. 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/QZZ7W2560708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80aef1e067a779c02f8f08b7701c661718c8c77f9784609578c4d8198f15126a. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/QZZ7W2560709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d66fcf8332e84d106a9cc14e63f6982af6bc5c8cf293abff5202c570ee677fc. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/QZZ7W2560710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7cefe0928261840d9ce83fec56e5096b7098abd8aa6a2b0f92906e4ddcd1395. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/QZZ7W2560711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60235f762c5704718e6a6b31bd81958d488375a1f1eb46ee9aad4cf212d3a848. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZZ7W2560712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4b9624ef720de4991be2fe7c31789680825757751199d534b81541ee5b8b0b5. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/QZZ7W2560713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34385da2ff49ad2b7267890ff68cc642f0541930622c8852ba847026c95c56af. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZZ7W2560714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa26c13ab5ba7e158e51bdb2a7c4b8ac5aceebc19b2b6de9d883956e232a14321. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:51:24Z), 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/QZZ7W2560715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa901882d5d18e219cc917fc8b55201da00fb0238c725a3c8e342999b73682f6. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T09:53:05Z), 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/QZZ7W2560716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37053b49d1064a5ff6058dc6d76bfd648ef4edefebf5f3b00599df0bb6bc1048. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZZ7W2560717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c417c2be8e27ac311ce0fef32589ee4c86fb636adddfc2004a65252e7088087. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZZ7W2560718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2faa042ed76c0059bb72d7156f88b341a1aa8f39e7bdff4096672b13664a06b3. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T17:46:57Z), 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/QZZ7W2560719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5af02205b2ed14600f77d397c18caabef561cf3d1b84817cbc672d8921779e9c. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZZ7W2560720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f361f826cfa33ca827dc5614b41153c195bf43f01aff1752ae85458dcec5fb1. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:49:24Z), 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/QZZ7W2560721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91e29bd46f01c170f2ee05ff252c23c0836b636f6b6dea6fcb9fbd3b33f79842. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZZ7W2560722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d9948376b0398e446c8391df1d033dd20787471b8af1663ea72dad7f8dce053. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZZ7W2560723.